TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D
Extremely Low Offset Voltage ...1 µV Max
D
Extremely Low Change on Offset Voltage
With Temperature . . . 0.003 µV/°C Typ
D
Low Input Offset Current
500 pA Max at T
A
= – 55°C to 125°C
D
AVD. . . 135 dB Min
D
CMRR and k
SVR
. . . 120 dB Min
D
Single-Supply Operation
D
Common-Mode Input Voltage Range
Includes the Negative Rail
D
No Noise Degradation With External
Capacitors Connected to V
DD–
description
The TLC2652 and TLC2652A are high-precision
chopper-stabilized operational amplifiers using
Texas Instruments Advanced LinCMOS
process. This process in conjunction with unique
chopper-stabilization circuitry produces opera
tional amplifiers whose performance matches or
exceeds that of similar devices available today.
Chopper-stabilization techniques make possible
extremely high dc precision by continuously
nulling input offset voltage even during variation in
temperature, time, common-mode voltage, and
power supply voltage. In addition, low-frequency
noise voltage is significantly reduced. This high
precision, coupled with the extremely high input
impedance of the CMOS input stage, makes the
TLC2652 and TLC2652A an ideal choice for
low-level signal processing applications such as
strain gauges, thermocouples, and other
transducer amplifiers. For applications that
require extremely low noise and higher usable
bandwidth, use the TLC2654 or TLC2654A
device, which has a chopping frequency of
10 kHz.
The TLC2652 and TLC2652A input common-mode range includes the negative rail, thereby providing superior
performance in either single-supply or split-supply applications, even at power supply voltage levels as low as
±1.9 V.
Two external capacitors are required for operation of the device; however , the on-chip chopper-control circuitry
is transparent to the user. On devices in the 14-pin and 20-pin packages, the control circuitry is made accessible
to allow the user the option of controlling the clock frequency with an external frequency source. In addition, the
clock threshold level of the TLC2652 and TLC2652A requires no level shifting when used in the single-supply
configuration with a normal CMOS or TTL clock input.
Copyright 1999, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Advanced LinCMOS is a trademark of Texas Instruments Incorporated.
1
2
3
4
8
7
6
5
C
XA
IN–
IN+
V
DD–
C
XB
V
DD+
OUT
CLAMP
D008, JG, OR P PACKAGE
NC – No internal connection
1
2
3
4
5
6
7
14
13
12
11
10
9
8
C
XB
C
XA
NC
IN–
IN+
NC
V
DD–
INT/EXT
CLK IN
CLK OUT
V
DD+
OUT
CLAMP
C RETURN
D014, J, OR N PACKAGE
(TOP VIEW)
3212019
910111213
4
5
6
7
8
18
17
16
15
14
CLK OUT
NC
V
DD+
NC
OUT
NC
NC
IN–
NC
IN+
FK PACKAGE
(TOP VIEW)
INT/EXT
NC
CLAMP
CLK IN
NC
NC
XA
V
C RETURN
XB
V
DD–
V
(TOP VIEW)
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
description (continued)
Innovative circuit techniques are used on the TLC2652 and TLC2652A to allow exceptionally fast overload
recovery time. If desired, an output clamp pin is available to reduce the recovery time even further.
The device inputs and output are designed to withstand –100-mA surge currents without sustaining latch-up.
Additionally the TLC2652 and TLC2652A incorporate internal ESD-protection circuits that prevent functional
failures at voltages up to 2000 V as tested under MIL-STD-883C, Method 3015.2; however, care should be
exercised in handling these devices as exposure to ESD may result in degradation of the device parametric
performance.
The C-suffix devices are characterized for operation from 0°C to 70°C. The I-suffix devices are characterized
for operation from –40°C to 85°C. The Q-suffix devices are characterized for operation from –40°C to125°C.
The M-suffix devices are characterized for operation over the full military temperature range of –55°C to125°C.
AVAILABLE OPTIONS
PACKAGED DEVICES
8 PIN 14 PIN 20 PIN
CHIP
T
A
VIOmax
AT 25°C
SMALL
OUTLINE
(D008)
CERAMIC
DIP
(JG)
PLASTIC
DIP
(P)
SMALL
OUTLINE
(D014)
CERAMIC
DIP
(J)
PLASTIC
DIP
(N)
CHIP
CARRIER
(FK)
FORM
(Y)
0°C
to
1 µV
TLC2652AC-8D
—
—
TLC2652ACP
TLC2652AC-14D
—
—
TLC2652ACN
—
—
TLC2652Y
70°C
3 µV
TLC2652C-8D
—
TLC2652CP
TLC2652C-14D
—
TLC2652CN
—
–40°C
to
1 µV
TLC2652AI-8D
—
—
TLC2652AIP
TLC2652AI-14D
—
—
TLC2652AIN
—
—
—
85°C
3 µV
TLC2652A-8D
—
TLC2652IP
TLC2652I-14D
—
TLC2652IN
—
–40°C
to
3.5 µV TLC2652Q-8D — — — — — — —
125°C
µ
–55°C
3 µV TLC2652AM-8D TLC2652AMJG TLC2652AMP TLC2652AM-14D TLC2652AMJ TLC2652AMN TLC2652AMFK
to
125°C
µ
3.5 µV TLC2652M-8D TLC2652MJG TLC2652MP TLC2652M-14D TLC2652MJ TLC2652MN TLC2652MFK
—
The D008 and D014 packages are available taped and reeled. Add R suffix to the device type (e.g., TLC2652AC-8DR). Chips are tested at 25°C.
functional block diagram
Clamp
Circuit
CLAMP
OUT
C RETURN
V
DD–
Compensation-
Biasing
Circuit
V
DD+
A
B
B
A
IN+
IN–
C
XA
C
XB
External Components
Null
Main
+
–
+
–
AB
DISTRIBUTION OF TLC2652
INPUT OFFSET VOLTAGE
Percentage of Units – %
VIO – Input Offset Voltage – µV
–3 –2 –1 0 1 2 3
0
4
8
12
16
20
24
28
32
36
150 Units Tested From 1 Wafer Lot
V
DD±
= ±5 V
TA = 25°C
N Package
C
IC
5
4
2
3
6
7
8
Pin numbers shown are for the D (14 pin), JG, and N packages.
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC2652Y chip information
This chip, when properly assembled, displays characteristics similar to the TLC2652C. Thermal compression
or ultrasonic bonding may be used on the doped-aluminum bonding pads. Chips may be mounted with
conductive epoxy or a gold-silicon preform.
BONDING PAD ASSIGNMENTS
CHIP THICKNESS: 15 TYPICAL
BONDING PADS: 4 × 4 MINIMUM
TJmax = 150°C
TOLERANCES ARE ±10%.
ALL DIMENSIONS ARE IN MILS.
PIN (7) IS INTERNALLY CONNECTED
TO BACKSIDE OF CHIP.
FOR THE PINOUT, SEE THE FUNCTIONAL
BLOCK DIAGRAM.
90
80
(13)
(12) (11) (10) (9)
(8)
(1)
(7)(5)(4)
(2)
(14)
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
‡
Supply voltage V
DD+
(see Note 1) 8 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply voltage V
DD–
(see Note 1) –8 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Differential input voltage, V
ID
(see Note 2) ±16 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, V
I
(any input, see Note 1) ±8 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range on CLK IN and INT/EXT
V
DD
– to V
DD–
+ 5.2 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input current, I
I
(each input) ±5 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output current, I
O
±50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Duration of short-circuit current at (or below) 25°C (see Note 3) unlimited. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current into CLK IN and INT/EXT
±5 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total dissipation See Dissipation Rating Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T
A
: C suffix 0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I suffix –40°C to 85°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Q suffix –40°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
M suffix –55°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range –65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Case temperature for 60 seconds: FK package 260°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: D, N, or P package 260°C. . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: J or JG package 300°C. . . . . . . . . . . . . . . .
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. All voltage values, except differential voltages, are with respect to the midpoint between V
DD+
and V
DD–
.
2. Differential voltages are at IN+ with respect to IN–.
3. The output may be shorted to either supply. Temperature and/or supply voltages must be limited to ensure that the maximum
dissipation rating is not exceeded.
DISSIPATION RATING TABLE
T
≤ 25°C DERATING FACTOR T
= 70°C T
= 85°C T
= 125°C
PACKAGE
A
POWER RATING ABOVE TA = 25°CAPOWER RATINGAPOWER RATINGAPOWER RATING
D008 725 mV 5.8 mW/°C 464 mW 377 mW 145 mW
D014 950 mV 7.6 mW/°C 608 mW 494 mW 190 mW
FK 1375 mV 11.0 mW/° C 880 mW 715 mW 275 mW
J 1375 mV 11.0 mW/°C 880 mW 715 mW 275 mW
JG 1050 mV 8.4 mW/°C 672 mW 546 mW 210 mW
N 1575 mV 12.6 mW/°C 1008 mW 819 mW 315 mW
P 1000 mV 8.0 mW/°C 640 mW 520 mW 200 mW
recommended operating conditions
C SUFFIX I SUFFIX Q SUFFIX M SUFFIX
MIN MAX MIN MAX MIN MAX MIN MAX
UNIT
Supply voltage, V
DD±
±1.9 ±8 ±1.9 ±8 ±1.9 ±8 ±1.9 ±8 V
Common-mode input voltage, V
IC
V
DD–VDD+
–1.9 V
DD–VDD+
–1.9 V
DD–VDD+
–1.9 V
DD–VDD+
–1.9 V
Clock input voltage V
DD–VDD–
+5 V
DD–
V
DD–
+5 V
DD–VDD–
+5 V
DD–VDD–
+5 V
Operating free-air temperature, T
A
0 70 –40 85 –40 125 –55 125 °C
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics at specified free-air temperature, VDD± = ±5 V (unless otherwise noted)
TLC2652C TLC2652AC
PARAMETER
TEST CONDITIONS
T
A
†
MIN TYP MAX MIN TYP MAX
UNIT
p
25°C 0.6 3 0.5 1
VIOInput offset voltage
Full range 4.35 2.35
µ
V
T emperature coef ficient of
°
α
VIO
input offset voltage
Full range
0.003
0.03
0.003
0.03µV/°C
Input offset voltage long-term
drift (see Note 4)
VIC = 0, RS = 50 Ω
25°C
0.003 0.06 0.003 0.02 µV/mo
p
25°C 2 2
p
IIOInput offset current
Full range 100 100
pA
p
25°C 4 4
p
IIBInput bias current
Full range 100 100
pA
–5 –5
V
ICR
C
ommon-mode input voltage
RS = 50 Ω Full range
5to5
to
V
ICR
range
S
g
3.1 3.1
Maximum positive peak
25°C 4.7 4.8 4.7 4.8
V
OM+
output voltage swing
R
L
=
10 kΩ
,
See Note 5
Full range 4.7 4.7
V
Maximum negative peak
25°C –4.7 –4.9 –4.7 –4.9
V
OM–
g
output voltage swing
R
L
= 10 kΩ,
See Note 5
Full range –4.7 –4.7
V
Large-signal differential
25°C 120 150 135 150
A
VD
gg
voltage amplification
V
O
= ±4 V,
R
L
= 10
kΩ
Full range 120 130
dB
f
ch
Internal chopping frequency 25°C 450 450 Hz
p
25°C 25 25
Clamp on-state current
R
L
=
100 kΩ
Full range 25 25
µ
A
p
25°C 100 100
p
Clamp off-state current
V
O
= –4 V to 4
V
Full range 100 100
pA
Common-mode rejection
VO = 0,
25°C 120 140 120 140
CMRR
j
ratio
V
IC
=
V
ICR
min,
RS = 50 Ω
Full range 120 120
dB
Supply-voltage rejection ratio
V
DD±
= ±1.9 V to ±8 V, 25°C 120 135 120 135
k
SVR
ygj
(∆V
DD±
/∆VIO)
VO = 0,
RS = 50 Ω
Full range 120 120
dB
pp
25°C 1.5 2.4 1.5 2.4
IDDSupply current
Full range 2.5 2.5
mA
†
Full range is 0° to 70°C.
NOTES: 4. Typical values are based on the input offset voltage shift observed through 168 hours of operating life test at TA = 150°C extrapolated
at TA = 25° using the Arrhenius equation and assuming an activation energy of 0.96 eV .
5. Output clamp is not connected.
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
operating characteristics specified free-air temperature, V
DD±
= ±5 V
TEST
TLC2652C TLC2652AC
PARAMETER
CONDITIONS
T
A
†
MIN TYP MAX MIN TYP MAX
UNIT
25°C 2 2.8 2 2.8
SR+Positive slew rate at unity gain
VO = ±2.3 V ,
Full range 1.5 1.5
V/µs
R
L
=
10 kΩ
,
C
= 100 pF
25°C 2.3 3.1 2.3 3.1
SR–Negative slew rate at unity gain
C
L
=
100 F
Full range 1.8 1.8
V/µs
Equivalent input noise voltage
f = 10 Hz 25°C 94 94 140
V
n
qg
(see Note 6)
f = 1 kHz
25°C 23 23 35
n
V/√H
z
Peak-to-peak equivalent input
f = 0 to 1 Hz 25°C 0.8 0.8
V
N(PP)
q
noise voltage
f = 0 to 10 Hz
25°C 2.8 2.8
µ
V
I
n
Equivalent input noise current f = 10 kHz 25°C 0.004 0.004 fA/√Hz
f = 10 kHz
,
Gain-bandwidth product
f 10 kHz,
RL = 10 kΩ,
25°C 1.9 1.9 MHz
L
CL = 100 pF
φm
Phase margin at unity gain
RL = 10 kΩ,
CL = 100 pF
25°C 48° 48°
†
Full range is 0° to 70°C.
NOTE 6: This parameter is tested on a sample basis for the TLC2652A. For other test requirements, please contact the factory . This statement
has no bearing on testing or nontesting of other parameters.
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics at specified free-air temperature, VDD± = ±5 V (unless otherwise noted)
TLC2652I TLC2652AI
PARAMETER
TEST CONDITIONS
T
A
†
MIN TYP MAX MIN TYP MAX
UNIT
p
25°C 0.6 3 0.5 1
VIOInput offset voltage
Full range 4.95 2.95
µ
V
T emperature coef ficient of
°
α
VIO
input offset voltage
Full range
0.003
0.03
0.003
0.03µV/°C
Input offset voltage
long-term drift (see Note 4)
VIC = 0, RS = 50 Ω
25°C
0.003 0.06 0.003 0.02 µV/mo
p
25°C 2 2
p
IIOInput offset current
Full range 150 150
pA
p
25°C 4 4
p
IIBInput bias current
Full range 150 150
pA
–5 –5
V
ICR
C
ommon-mode inpu
t
RS = 50 Ω Full range
5to5
to
V
ICR
voltage range
S
g
3.1 3.1
Maximum positive peak
25°C 4.7 4.8 4.7 4.8
V
OM+
output voltage swing
R
L
=
10 kΩ
,
See Note 5
Full range 4.7 4.7
V
Maximum negative peak
25°C –4.7 –4.9 –4.7 –4.9
V
OM–
g
output voltage swing
R
L
= 10 kΩ,
See Note 5
Full range –4.7 –4.7
V
Large-signal differential
25°C 120 150 135 150
A
VD
gg
voltage amplification
V
O
= ±4 V,
R
L
= 10
kΩ
Full range 120 125
dB
Internal chopping frequency 25°C 450 450 Hz
p
25°C 25 25
Clamp on-state current
R
L
=
100 kΩ
Full range 25 25
µ
A
p
25°C 100 100
p
Clamp off-state current
V
O
= –4 V to 4
V
Full range 100 100
pA
Common-mode rejection
VO = 0,
25°C 120 140 120 140
CMRR
j
ratio
V
IC
=
V
ICR
min,
RS = 50 Ω
Full range 120 120
dB
Supply-voltage rejection
V
DD±
= ±1.9 V to ±8 V, 25°C 120 135 120 135
k
SVR
ygj
ratio (∆V
DD±
/∆VIO)
VO = 0,
RS = 50 Ω Full range 120 120
dB
pp
25°C 1.5 2.4 1.5 2.4
IDDSupply current
V
O
=
0
,
No load
Full range 2.5 2.5
mA
†
Full range is –40° to 85°C.
NOTES: 4. Typical values are based on the input offset voltage shift observed through 168 hours of operating life test at TA = 150°C extrapolated
at TA = 25° using the Arrhenius equation and assuming an activation energy of 0.96 eV .
5. Output clamp is not connected.
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
operating characteristics at specified free-air temperature, V
DD±
= ±5 V
TEST
TLC2652I TLC2652AI
PARAMETER
CONDITIONS
T
A
†
MIN TYP MAX MIN TYP MAX
UNIT
25°C 2 2.8 2 2.8
SR+Positive slew rate at unity gain
VO = ±2.3 V ,
Full range 1.4 1.4
V/µs
R
L
=
10 kΩ
,
C
= 100 pF
25°C 2.3 3.1 2.3 3.1
SR–Negative slew rate at unity gain
C
L
=
100 F
Full range 1.7 1.7
V/µs
Equivalent input noise voltage
f = 10 Hz 25°C 94 94 140
V
n
qg
(see Note 6)
f = 1 kHz
25°C 23 23 35
n
V/√H
z
Peak-to-peak equivalent input
f = 0 to 1 Hz 25°C 0.8 0.8
V
N(PP)
q
noise voltage
f = 0 to 10 Hz
25°C 2.8 2.8
µ
V
I
n
Equivalent input noise current f = 1 kHz 25°C 0.004 0.004 pA/√Hz
f = 10 kHz
,
Gain-bandwidth product
f 10 kHz,
RL = 10 kΩ,
25°C 1.9 1.9 MHz
L
CL = 100 pF
φm
Phase margin at unity gain
RL = 10 kΩ,
CL = 100 pF
25°C 48° 48°
†
Full range is –40° to 85°C.
NOTE 6: This parameter is tested on a sample basis for the TLC2652A. For other test requirements, please contact the factory . This statement
has no bearing on testing or nontesting of other parameters.
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics at specified free-air temperature, VDD± = ±5 V (unless otherwise noted)
PARAMETER TEST CONDITIONS
T
A
†
TLC2652Q
TLC2652M
TLC2652AM
UNIT
A
MIN TYP MAX MIN TYP MAX
Input offset voltage
25°C 0.6 3.5 0.5 3
V
IO
g
(see Note 7)
Full range 10 8
µ
V
T emperature coef ficient of
∗
∗
°
α
VIO
input offset voltage
Full range
0.003
0.03∗0.003
0.03
∗
µ
V/°C
Input offset voltage
long-term drift (see Note 4)
VIC = 0, RS = 50 Ω
25°C
0.003 0.06
∗
0.003 0.02∗µV/mo
p
25°C 2 2
p
IIOInput offset current
Full range 500 500
pA
p
25°C 4 4
p
IIBInput bias current
Full range 500 500
pA
–5 –5
V
ICR
C
ommon-mode inpu
t
RS = 50 Ω Full range
5to5
to
V
ICR
voltage range
S
g
3.1 3.1
Maximum positive peak
25°C 4.7 4.8 4.7 4.8
V
OM+
output voltage swing
R
L
= 10 kΩ,
See Note 5
Full range 4.7 4.7
V
Maximum negative peak
25°C –4.7 –4.9 –4.7 –4.9
V
OM–
g
output voltage swing
R
L
=
10 kΩ
,
See Note 5
Full range –4.7 –4.7
V
Large-signal differential
25°C 120 150 135 150
A
VD
gg
voltage amplification
V
O
= ±4 V,
R
L
= 10
kΩ
Full range 120 120
dB
f
ch
Internal chopping frequency 25°C 450 450 Hz
p
25°C 25 25
Clamp on-state current
V
O
= –5 V to 5
V
Full range 25 25
µ
A
p
25°C 100 100
p
Clamp off-state current
R
L
=
100 kΩ
Full range 500 500
pA
Common-mode rejection
VO = 0,
25°C 120 140 120 140
CMRR
j
ratio
V
IC
=
V
ICR
min,
RS = 50 Ω
Full range 120 120
dB
Supply-voltage rejection
V
DD±
= ±1.9 V to ±8 V, 25°C 120 135 120 135
k
SVR
ygj
ratio (∆V
DD±
/∆VIO)
VO = 0,
RS = 50 Ω Full range 120 120
dB
pp
25°C 1.5 2.4 1.5 2.4
IDDSupply current
V
O
=
0
,
No load
Full range 2.5 2.5
mA
∗
On products compliant to MIL-PRF-38535, this parameter is not production tested.
†
Full range is –40° to 125°C for Q suffix, –55° to 125°C for M suffix.
NOTES: 4. Typical values are based on the input offset voltage shift observed through 168 hours of operating life test at TA = 150°C extrapolated
at TA = 25° using the Arrhenius equation and assuming an activation energy of 0.96 eV .
5. Output clamp is not connected.
7. This parameter is not production tested. Thermocouple effects preclude measurement of the actual VIO of these devices in high
speed automated testing. VIO is measured to a limit determined by the test equipment capability at the temperature extremes. The
test ensures that the stabilization circuitry is performing properly.
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
10
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
operating characteristics specified free-air temperature, V
DD±
= ±5 V
PARAMETER TEST CONDITIONS
T
A
†
TLC2652Q
TLC2652M
TLC2652AM
UNIT
MIN TYP MAX
25°C 2 2.8
SR+Positive slew rate at unity gain
VO = ±2.3 V ,
Full range 1.3
V/µs
R
L
=
10 kΩ
,
C
= 100 pF
25°C 2.3 3.1
SR–Negative slew rate at unity gain
C
L
=
100 F
Full range 1.6
V/µs
p
f = 10 Hz 25°C 94
VnEquivalent input noise voltage
f = 1 kHz 25°C 23
n
V/√H
z
p
p
f = 0 to 1 Hz 25°C 0.8
V
N(PP)
Peak-to-peak equivalent input noise voltage
f = 0 to 10 Hz 25°C 2.8
µ
V
I
n
Equivalent input noise current f = 1 kHz 25°C 0.004 pA/√Hz
Gain-bandwidth product
f = 10 kHz,
RL = 10 kΩ,
CL = 100 pF
25°C 1.9 MHz
φ
m
Phase margin at unity gain
RL = 10 kΩ,
CL = 100 pF
25°C 48°
†
Full range is –40° to 125°C for the Q suffix, –55° to 125°C for the M suffix.
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
11
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics at V
DD±
= ±5 V, TA = 25°C (unless otherwise noted)
TLC2652Y
PARAMETER
TEST CONDITIONS
MIN TYP MAX
UNIT
V
IO
Input offset voltage 0.6 3 µV
Input offset voltage long-term drift (see Note 4)
0.003 0.006 µV/mo
I
IO
Input offset current
V
IC
=
0
,
R
S
=
50 Ω
2 pA
I
IB
Input bias current 4 pA
–5
V
ICR
Common-mode input voltage range RS = 50 Ω
5
to
V
ICR
gg
S
3.1
V
OM+
Maximum positive peak output voltage swing RL = 10 kΩ, See Note 5 4.7 4.8 V
V
OM–
Maximum negative peak output voltage swing RL = 10 kΩ, See Note 5 –4.7 –4.9 V
A
VD
Large-signal differential voltage amplification VO = ±4 V, RL = 10 kΩ 120 150 dB
f
ch
Internal chopping frequency 450 Hz
Clamp on-state current RL = 100 kΩ 25 µA
Clamp off-state current VO = –4 V to 4 V 100 pA
CMRR Common-mode rejection ratio
VO = 0,
RS = 50 Ω
VIC = V
ICR
min,
120 140 dB
pp
V
DD±
= ±1.9 V to ±8 V,
k
SVR
Suppl
y-v
oltage rejection ratio (∆V
DD±
/∆VIO)
RS = 50 Ω VO = 0,
120
135
dB
I
DD
Supply current VO = 0, No load 1.5 2.4 mA
NOTES: 4. Typical values are based on the input offset voltage shift observed through 168 hours of operating life test at TA = 150°C extrapolated
at TA = 25° using the Arrhenius equation and assuming an activation energy of 0.96 eV .
5. Output clamp is not connected.
operating characteristics at V
DD±
= ±5 V, TA = 25°C
TLC2652Y
PARAMETER
TEST CONDITIONS
MIN TYP MAX
UNIT
SR+ Positive slew rate at unity gain
V
= ±2.3 V , R
= 10 kΩ,
2 2.8 V/µs
SR– Negative slew rate at unity gain
O
,
CL = 100 pF
L
,
2.3 3.1 V/µs
p
f = 10 Hz 94
VnEquivalent input noise voltage
f = 1 kHz 23
n
V/√H
z
p
p
f = 0 to 1 Hz 0.8
V
N(PP)
Peak-to-peak equivalent input noise voltage
f = 0 to 10 Hz 2.8
µ
V
I
n
Equivalent input noise current f = 1 kHz pA/√Hz
Gain-bandwidth product
f = 10 kHz,
CL = 100 pF
RL = 10 kΩ,
1.9 MHz
φ
m
Phase margin at unity gain RL = 10 kΩ, CL = 100 pF 48°
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
12
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Table of Graphs
FIGURE
V
IO
Normalized input offset voltage vs Chopping frequency 1
vs Common-mode input voltage 2
I
IB
Input bias current
vs Common mode in ut voltage
vs Chopping frequency
2
3
IB
gq y
vs Free-air temperature 4
p
vs Chopping frequency 5
IIOInput offset current
gq y
vs Free-air temperature 6
Clamp current vs Output voltage 7
V
(OPP)
Maximum peak-to-peak output voltage vs Frequency 8
p
p
vs Output current 9, 10
VOMMaximum peak output voltage
vs Free-air temperature
,
11, 12
p
vs Frequency 13
AVDLarge-signal differential voltage amplification
qy
vs Free-air temperature 14
pp
vs Supply voltage 15
Chopping frequenc
y
yg
vs Free-air temperature 16
pp
vs Supply voltage 17
IDDSupply current
yg
vs Free-air temperature 18
p
vs Supply voltage 19
IOSShort-circuit output current
yg
vs Free-air temperature 20
vs Supply voltage 21
SR
Slew rate
yg
vs Free-air temperature 22
p
Small-signal 23
Pulse response
g
Large-signal 24
V
N(PP)
Peak-to-peak equivalent input noise voltage vs Chopping frequency 25, 26
V
n
Equivalent input noise voltage vs Frequency 27
p
vs Supply voltage 28
Gain-bandwidth product
yg
vs Free-air temperature 29
vs Supply voltage 30
φ
m
Phase margin
vs Su ly voltage
vs Free-air temperature
30
31
φ
m
g
vs Load capacitance 32
Phase shift vs Frequency 13
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
13
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
†
NORMALIZED INPUT OFFSET VOLTAGE
vs
CHOPPING FREQUENCY
–10
0
10
20
30
40
50
60
70
100 1 k 10 k 100 k
Chopping Frequency – Hz
V
DD±
= ±5 V
VIC = 0
TA = 25°C
VIO – Normalized Input Offset – uV
V
IO
Vµ
Figure 1
–5
VIC – Common-Mode Input Voltage – V
IIB – Input Bias Current – pA
10
5
0
01
15
20
INPUT BIAS CURRENT
vs
COMMON-MODE INPUT VOLTAGE
25
2345
I
IB
V
DD±
= ±5 V
TA = 25°C
–4 –3 –2 –1
Figure 2
Figure 3
Chopping Frequency – Hz
30
10
0
60
20
IIB – Input Bias Current – pA
50
40
70
INPUT BIAS CURRENT
vs
CHOPPING FREQUENCY
100 1 k 10 k 100 k
IB
I
V
DD±
= ±5 V
VIC = 0
TA = 25°C
TA – Free-Air Temperature – °C
1
100
25 45 65 105 125
INPUT BIAS CURRENT
vs
FREE-AIR TEMPERATURE
85
10
V
DD±
= ±5 V
VO = 0
VIC = 0
IIB – Input Bias Current – pA
IB
I
Figure 4
†
Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
14
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
†
INPUT OFFSET CURRENT
vs
CHOPPING FREQUENCY
Chopping Frequency – Hz
20
10
5
0
25
15
100 1 k 10 k 100 k
IIO – Input Offset Current – pA
I
IO
V
DD±
= ±5 V
VIC = 0
TA = 25°C
Figure 5 Figure 6
IIO – Input Offset Current – pA
I
IO
TA – Free-Air Temperature – °C
6
4
2
0
25 45 65 85
8
INPUT OFFSET CURRENT
vs
FREE-AIR TEMPERATURE
10
105 125
V
DD±
= ±5 V
VIC = 0
|VO| – Output Voltage – V
1 nA
100 pA
10 pA
1 pA
4 4.2 4.4 4.6
CLAMP CURRENT
vs
OUTPUT VOLTAGE
4.8 5
100 nA
10 nA
V
DD±
= ±5 V
TA = 25°C
Negative Clamp Current
100 µA
10 µA
1 µA
Positive Clamp Current
|Clamp Current|
Figure 7
8
4
2
0
10
6
100 1 k 10 k 1 M
VO(PP) – Maximum Peak-to-Peak Output Voltage – V
f – Frequency – Hz
MAXIMUM PEAK-TO-PEAK OUTPUT
VOLTAGE
vs
FREQUENCY
V
O(PP)
V
DD±
= ±5 V
RL = 10 kΩ
TA = 125°C
TA = –55°C
Figure 8
†
Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
15
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
†
Figure 9
|IO| – Output Current – mA
4.6
4.4
4.2
4
0 0.4 0.8 1.2
4.8
MAXIMUM PEAK OUTPUT VOLTAGE
vs
OUTPUT CURRENT
5
1.6 2
V
DD±
= ±5 V
TA = 25°C
V
OM+
V
OM–
|VOM| – Maximum Peak Output Voltage – V
|V
OM
Figure 10
|IO| – Output Current – mA
7.1
6.9
6.7
0 0.4 0.8 1.2
7.3
MAXIMUM PEAK OUTPUT VOLTAGE
vs
OUTPUT CURRENT
7.5
1.6 2
V
DD±
= ±7.5 V
TA = 25°C
V
OM+
V
OM–
|VOM| – Maximum Peak Output Voltage – V
|V
OM
Figure 11
TA – Free-Air Temperature – °C
0
–75 0 25 50
2.5
MAXIMUM PEAK OUTPUT VOLTAGE
vs
FREE-AIR TEMPERATURE
5
75 100 125
V
DD±
= ±5 V
RL = 10 kΩ
–2.5
VOM – Maximum Peak Output Voltage – V
V
OM
–5
–50 –25
Figure 12
VOM – Maximum Peak Output Voltage – V
0
4
MAXIMUM PEAK OUTPUT VOLTAGE
vs
FREE-AIR TEMPERATURE
8
TA – Free-Air Temperature – °C
–75 0 25 50 75 100 125
V
DD±
= ±7.5 V
RL = 10 kΩ
V
OM
–50 –25
–8
–4
†
Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
16
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
†
20
0
40
60
80
10 100 1 k 10 k 100 k
f – Frequency – Hz
LARGE-SIGNAL DIFFERENTIAL VOLTAGE
AMPLIFICATION AND PHASE SHIFT
vs
FREQUENCY
1 M 10 M
100
120
220°
200°
180°
160°
140°
120°
100°
80°
60°
V
DD±
= ±5 V
RL = 10 kΩ
CL = 100 pF
TA = 25°C
A
VD
–20
–40
Phase Shift
AVD – Large-Signal Differential
A
VD
Voltage Amplification – dB
Figure 13
Phase Shift
Figure 14
–50 –25
145
140
135
–75 0 25 50
150
LARGE-SIGNAL DIFFERENTIAL VOLTAGE
AMPLIFICATION
vs
FREE-AIR TEMPERATURE
155
75 100 125
TA – Free-Air Temperature – °C
V
DD±
= ±7.5 V
RL = 10 kΩ
VO = ±4 V
AVD – Large-Signal Differential
A
VD
Voltage Amplification – dB
†
Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
17
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
†
Figure 15
|V
DD±
| – Supply Voltage – V
480
460
440
420
012345
500
520
CHOPPING FREQUENCY
vs
SUPPLY VOLTAGE
540
678
T
A
= 25°C
Chopping Frequency – kHz
Figure 16
–50 –25
TA – Free-Air Temperature – °C
430
420
410
400
–75 0 25 50
440
450
CHOPPING FREQUENCY
vs
FREE-AIR TEMPERATURE
460
75 100 125
V
DD±
= ±5 V
Chopping Frequency – kHz
Figure 17
|VDD ±| – Supply Voltage – V
IDD – Supply Current – mA
I
DD
1.2
0.8
0.4
0
0235
1.6
SUPPLY CURRENT
vs
SUPPLY VOLTAGE
2
78
146
T
A
= 25°C
TA = –55°C
TA = 125°C
VO = 0
No Load
–50 –25
TA – Free-Air Temperature – °C
1.2
0.8
0.4
0
–75 0 50
1.6
SUPPLY CURRENT
vs
FREE-AIR TEMPERATURE
2
100 125
25 75
V
DD±
= ±5 V
V
DD±
= ±7.5 V
V
DD±
= ±2.5 V
VO = 0
No Load
IDD – Supply Current – mA
I
DD
Figure 18
†
Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
18
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
†
Figure 19
–4
0
–12
012345
IOS – Short-Circuit Output Current – mA
4
8
SHORT-CIRCUIT OUTPUT CURRENT
vs
SUPPLY VOLTAGE
12
678
|VDD ±| – Supply Voltage – V
I
OS
VO = 0
TA = 25°C
–8
VID = –100 mV
VID = 100 mV
Figure 20
–50 –25
0
–10
–15
–75 0 25 50
5
10
SHORT-CIRCUIT OUTPUT CURRENT
vs
FREE-AIR TEMPERATURE
15
75 100 125
TA – Free-Air Temperature – °C
VID = 100 mV
VID = –100 mV
V
DD±
= ±5 V
VO = 0
IOS – Short-Circuit Output Current – mA
I
OS
–5
Figure 21
2
1
0
0123 45
3
4
678
|V
DD±
| – Supply Voltage – V
SLEW RATE
vs
SUPPLY VOLTAGE
RL = 10 kΩ
CL = 100 pF
TA = 25°C
SR–
SR+
SR – Slew Rate – V?us
sµ
V/
Figure 22
–50 –25
2
1
0
–75 0 25 50
SR – Slew Rate – V?us
3
SLEW RATE
vs
FREE-AIR TEMPERATURE
4
75 100 125
TA – Free-Air Temperature – °C
sµ
V/
V
DD±
= ±5 V
RL = 10 kΩ
CL = 100 pF
SR+
SR–
†
Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
19
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 23
–25
t – Time – µs
VO – Output Voltage – mV
0
–75
–100
0123
25
75
VOLTAGE-FOLLOWER
SMALL-SIGNAL
PULSE RESPONSE
100
4567
50
V
O
V
DD±
= ±5 V
RL = 10 kΩ
CL = 100 pF
TA = 25°C
–50
Figure 24
t – Time – µs
VO – Output Voltage – V
V
O
0
–1
–3
–4
0 5 10 15 20
1
3
VOLTAGE-FOLLOWER
LARGE-SIGNAL
PULSE RESPONSE
4
25 30 35 40
–2
2
V
DD±
= ±5 V
RL = 10 kΩ
CL = 100 pF
TA = 25°C
Figure 25
fch – Chopping Frequency – kHz
PEAK-TO-PEAK INPUT NOISE VOLTAGE
vs
CHOPPING FREQUENCY
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
0246810
VN(PP) – Peak-to-Peak Input Noise Voltage –uV
N(PP)
V
V
DD±
= ±5 V
RS = 20 Ω
f = 0 to 1 Hz
TA = 25°C
µV
Figure 26
fch – Chopping Frequency – kHz
3
2
1
0
0246
VN(PP) – Peak-to-Peak Input Noise Voltage – uV
4
PEAK-TO-PEAK INPUT NOISE VOLTAGE
vs
CHOPPING FREQUENCY
5
810
N(PP)
V
V
DD±
= ±5 V
RS = 20 Ω
f = 0 to 1 Hz
TA = 25°C
µV
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
20
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
†
Vn – Equivalent Input Noise Voltage – nV/Hz
80
40
20
0
100
60
1 10 100 1 k
f – Frequency – Hz
EQUIVALENT INPUT NOISE VOLTAGE
vs
FREQUENCY
V
n
V
DD±
= ±5 V
RS = 20 Ω
TA = 25°C
nV/ Hz
Figure 27 Figure 28
|V
CC±
| – Supply Voltage – V
1.9
1.8
012345
Gain-Bandwidth Product – MHz
2
GAIN-BANDWIDTH PRODUCT
vs
SUPPLY VOLTAGE
2.1
678
R
L
= 10 kΩ
CL = 100 pF
TA = 25°C
Figure 29
–50
TA – Free-Air Temperature – °C
2
1.8
1.4
1.2
–75 0 25 50
Gain-Bandwidth Product – MHz
2.2
2.4
GAIN-BANDWIDTH PRODUCT
vs
FREE-AIR TEMPERATURE
2.6
75 100 125
V
DD±
= ±5 V
RL = 10 kΩ
CL = 100 pF
–25
Figure 30
|V
CC±
| – Supply Voltage – V
om – Phase Margin
0235
PHASE MARGIN
vs
SUPPLY VOLTAGE
78146
R
L
= 10 kΩ
CL = 100 pF
TA = 25°C
φ
m
50°
48°
46°
44°
42°
40°
†
Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
21
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
†
Figure 31
–50 –25
50°
48°
46°
44°
42°
40°
TA – Free-Air Temperature – °C
–75 0 50
PHASE MARGIN
vs
FREE-AIR TEMPERATURE
100 12525 75
V
DD±
= ±5 V
RL = 10 kΩ
CL = 100 pF
om – Phase Margin
φ
m
Figure 32
0 200 400 600
PHASE MARGIN
vs
LOAD CAPACITANCE
800 1000
V
DD±
= ±5 V
RL = 10 kΩ
TA = 25°C
CL – Load Capacitance – pF
om – Phase Margin
φ
m
60°
50°
40°
30°
20°
10°
0°
†
Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.
APPLICATION INFORMATION
capacitor selection and placement
The two important factors to consider when selecting external capacitors CXA and CXB are leakage and
dielectric absorption. Both factors can cause system degradation, negating the performance advantages
realized by using the TLC2652.
Degradation from capacitor leakage becomes more apparent with the increasing temperatures. Low-leakage
capacitors and standoffs are recommended for operation at T
A
= 125°C. In addition, guard bands are
recommended around the capacitor connections on both sides of the printed circuit board to alleviate problems
caused by surface leakage on circuit boards.
Capacitors with high dielectric absorption tend to take several seconds to settle upon application of power, which
directly affects input offset voltage. In applications where fast settling of input offset voltage is needed, it is
recommended that high-quality film capacitors, such as mylar, polystyrene, or polypropylene, be used. In other
applications, however, a ceramic or other low-grade capacitor can suffice.
Unlike many choppers available today , the TLC2652 is designed to function with values of C
XA
and CXB in the
range of 0.1 µF to 1 µF without degradation to input offset voltage or input noise voltage. These capacitors
should be located as close as possible to the C
XA
and C
XB
pins and returned to either V
DD–
or C RETURN. On
many choppers, connecting these capacitors to V
DD–
causes degradation in noise performance. This problem
is eliminated on the TLC2652.
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
22
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
internal/external clock
The TLC2652 has an internal clock that sets the chopping frequency to a nominal value of 450 Hz. On 8-pin
packages, the chopping frequency can only be controlled by the internal clock; however, on all 14-pin packages
and the 20-pin FK package, the device chopping frequency can be set by the internal clock or controlled
externally by use of the INT/EXT
and CLK IN pins. T o use the internal 450-Hz clock, no connection is necessary .
If external clocking is desired, connect INT/EXT
to V
DD–
and the external clock to CLK IN. The external clock
trip point is 2.5 V above the negative rail; however, CLK IN can be driven from the negative rail to 5 V above
the negative rail. If this level is exceeded, damage could occur to the device unless the current into CLK IN is
limited to ±5 mA. When operating in the single-supply configuration, this feature allows the TLC2652 to be driven
directly by 5-V TTL and CMOS logic. A
divide-by-two frequency divider interfaces with
CLK IN and sets the clock chopping frequency.
The duty cycle of the external is not critical but
should be kept between 30% and 60%.
overload recovery/output clamp
When large differential input voltage conditions
are applied to the TLC2652, the nulling loop
attempts to prevent the output from saturating by
driving C
XA
and CXB to internally-clamped voltage
levels. Once the overdrive condition is removed,
a period of time is required to allow the built-up
charge to dissipate. This time period is defined as
overload recovery time (see Figure 33). Typical
overload recovery time for the TLC2652 is
significantly faster than competitive products;
however, if required, this time can be reduced
further by use of internal clamp circuitry
accessible through CLAMP if required.
The clamp is a switch that is automatically activated when the output is approximately 1 V from either supply
rail. When connected to the inverting input (in parallel with the closed-loop feedback resistor), the closed-loop
gain is reduced, and the TLC2652 output is prevented from going into saturation. Since the output must source
sink current through the switch (see Figure 7), the maximum output voltage swing is slightly reduced.
thermoelectric effects
T o take advantage of the extremely low of fset voltage drift of the TLC2652, care must be taken to compensate
for the thermoelectric effects present when two dissimilar metals are brought into contact with each other (such
as device leads being soldered to a printed circuit board). Dissimilar metal junctions can produce thermoelectric
voltages in the range of several microvolts per degree Celsius (orders of magnitude greater than the 0.01-µV/°C
typical of the TLC2652).
To help minimize thermoelectric effects, careful attention should be paid to component selection and
circuit-board layout. Avoid the use of nonsoldered connections (such as sockets, relays, switches, etc.) in the
input signal path. Cancel thermoelectric effects by duplicating the number of components and junctions in each
device input. The use of low-thermoelectric-coefficient components, such as wire-wound resistors, is also
beneficial.
0
0 10203040
VI – Input Voltage – mV VO – Output Voltage – V
t – Time – ms
0
50 60 70 80
V
I
V
O
V
DD±
= ±5 V
TA = 25°C
Figure 33. Overload Recovery
–5
–50
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
23
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
latch-up avoidance
Because CMOS devices are susceptible to latch-up due to their inherent parasitic thyristors, the TLC2652 inputs
and output are designed to withstand –100-mA surge currents without sustaining latch-up; however, techniques
to reduce the chance of latch-up should be used whenever possible. Internal protection diodes should not, by
design, be forward biased. Applied input and output voltages should not exceed the supply voltage by more than
300 mV. Care should be exercised when using capacitive coupling on pulse generators. Supply transients
should be shunted by the use of decoupling capacitors (0.1 µF typical) located across the supply rails as close
to the device as possible.
The current path established if latch-up occurs is usually between the supply rails and is limited only by the
impedance of the power supply and the forward resistance of the parasitic thyristor. The chance of latch-up
occurring increases with increasing temperature and supply voltage.
electrostatic discharge protection
The TLC2652 incorporates internal ESD-protection circuits that prevent functional failures at voltages at or
below 2000 V. Care should be exercised in handling these devices, as exposure to ESD may result in
degradation of the device parametric performance.
theory of operation
Chopper-stabilized operational amplifiers offer the best dc performance of any monolithic operational amplifier .
This superior performance is the result of using two operational amplifiers, a main amplifier and a nulling
amplifier, plus oscillator-controlled logic and two external capacitors to create a system that behaves as a single
amplifier. With this approach, the TLC2652 achieves submicrovolt input offset voltage, submicrovolt noise
voltage, and offset voltage variations with temperature in the nV/°C range.
The TLC2652 on-chip control logic produces two dominant clock phases: a nulling phase and an amplifying
phase. The term chopper-stabilized derives from the process of switching between these two clock phases.
Figure 34 shows a simplified block diagram of the TLC2652. Switches A and B are make-before-break types.
During the nulling phase, switch A is closed shorting the nulling amplifier inputs together and allowing the nulling
amplifier to reduce its own input offset voltage by feeding its output signal back to an inverting input node.
Simultaneously , external capacitor C
XA
stores the nulling potential to allow the offset voltage of the amplifier to
remain nulled during the amplifying phase.
Null
Amplifier
IN+
IN–
Main Amplifier
V
O
V
DD–
C
XA
C
XB
B
A
B
A
+
+
–
–
Figure 34. TLC2652 Simplified Block Diagram
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
24
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
theory of operation (continued)
During the amplifying phase, switch B is closed connecting the output of the nulling amplifier to a noninverting
input of the main amplifier. In this configuration, the input offset voltage of the main amplifier is nulled. Also,
external capacitor C
XB
stores the nulling potential to allow the offset voltage of the main amplifier to remain
nulled during the next nulling phase.
This continuous chopping process allows offset voltage nulling during variations in time and temperature over
the common-mode input voltage range and power supply range. In addition, because the low-frequency signal
path is through both the null and main amplifiers, extremely high gain is achieved.
The low-frequency noise of a chopper amplifier depends on the magnitude of the component noise prior to
chopping and the capability of the circuit to reduce this noise while chopping. The use of the Advanced LinCMOS
process, with its low-noise analog MOS transistors and patent-pending input stage design, significantly reduces
the input noise voltage.
The primary source of nonideal operation in chopper-stabilized amplifiers is error charge from the switches. As
charge imbalance accumulates on critical nodes, input offset voltage can increase, especially with increasing
chopping frequency . This problem has been significantly reduced in the TLC2652 by use of a patent-pending
compensation circuit and the Advanced LinCMOS process.
The TLC2652 incorporates a feed-forward design that ensures continuous frequency response. Essentially , the
gain magnitude of the nulling amplifier and compensation network crosses unity at the break frequency of the
main amplifier. As a result, the high-frequency response of the system is the same as the frequency response
of the main amplifier. This approach also ensures that the slewing characteristics remain the same during both
the nulling and amplifying phases.
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
25
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
MECHANICAL DATA
D (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE
14 PIN SHOWN
4040047/D 10/96
0.228 (5,80)
0.244 (6,20)
0.069 (1,75) MAX
0.010 (0,25)
0.004 (0,10)
1
14
0.014 (0,35)
0.020 (0,51)
A
0.157 (4,00)
0.150 (3,81)
7
8
0.044 (1,12)
0.016 (0,40)
Seating Plane
0.010 (0,25)
PINS **
0.008 (0,20) NOM
A MIN
A MAX
DIM
Gage Plane
0.189
(4,80)
(5,00)
0.197
8
(8,55)
(8,75)
0.337
14
0.344
(9,80)
16
0.394
(10,00)
0.386
0.004 (0,10)
M
0.010 (0,25)
0.050 (1,27)
0°–8°
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion, not to exceed 0.006 (0,15).
D. Falls within JEDEC MS-012
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
26
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
MECHANICAL DATA
FK (S-CQCC-N**) LEADLESS CERAMIC CHIP CARRIER
4040140/D 10/96
28 TERMINAL SHOWN
B
0.358
(9,09)
MAX
(11,63)
0.560
(14,22)
0.560
0.458
0.858
(21,8)
1.063
(27,0)
(14,22)
A
NO. OF
MINMAX
0.358
0.660
0.761
0.458
0.342
(8,69)
MIN
(11,23)
(16,26)
0.640
0.739
0.442
(9,09)
(11,63)
(16,76)
0.962
1.165
(23,83)
0.938
(28,99)
1.141
(24,43)
(29,59)
(19,32)(18,78)
**
20
28
52
44
68
84
0.020 (0,51)
TERMINALS
0.080 (2,03)
0.064 (1,63)
(7,80)
0.307
(10,31)
0.406
(12,58)
0.495
(12,58)
0.495
(21,6)
0.850
(26,6)
1.047
0.045 (1,14)
0.045 (1,14)
0.035 (0,89)
0.035 (0,89)
0.010 (0,25)
121314151618 17
11
10
8
9
7
5
432
0.020 (0,51)
0.010 (0,25)
6
12826 27
19
21
B SQ
A SQ
22
23
24
25
20
0.055 (1,40)
0.045 (1,14)
0.028 (0,71)
0.022 (0,54)
0.050 (1,27)
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. This package can be hermetically sealed with a metal lid.
D. The terminals are gold plated.
E. Falls within JEDEC MS-004
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
27
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
MECHANICAL DATA
J (R-GDIP-T**) CERAMIC DUAL-IN-LINE PACKAGE
1
20
0.290
(7,87)
0.310
0.975
(24,77)
(23,62)
0.930
(7,37)
0.245
(6,22)
(7,62)
0.300
181614
PINS **
0.290
(7,87)
0.310
0.785
(19,94)
(19,18)
0.755
(7,37)
0.310
(7,87)
(7,37)
0.290
0.755
(19,18)
(19,94)
0.785
0.245
(6,22)
(7,62)
0.300A0.300
(7,62)
(6,22)
0.245
A MIN
A MAX
B MAX
B MIN
C MIN
C MAX
DIM
0.310
(7,87)
(7,37)
0.290
(23,10)
0.910
0.300
(7,62)
(6,22)
0.245
0°–15°
Seating Plane
0.014 (0,36)
0.008 (0,20)
4040083/D 08/98
C
8
7
0.020 (0,51) MIN
B
0.070 (1,78)
0.100 (2,54)
0.065 (1,65)
0.045 (1,14)
14 PIN SHOWN
14
0.015 (0,38)
0.023 (0,58)
0.100 (2,54)
0.200 (5,08) MAX
0.130 (3,30) MIN
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. This package can be hermetically sealed with a ceramic lid using glass frit.
D. Index point is provided on cap for terminal identification only on press ceramic glass frit seal only.
E. Falls within MIL STD 1835 GDIP1-T14, GDIP1-T16, GDIP1-T18, GDIP1-T20, and GDIP1-T22.
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
28
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
MECHANICAL DATA
JG (R-GDIP-T8) CERAMIC DUAL-IN-LINE PACKAGE
0.310 (7,87)
0.290 (7,37)
0.014 (0,36)
0.008 (0,20)
Seating Plane
4040107/C 08/96
5
4
0.065 (1,65)
0.045 (1,14)
8
1
0.020 (0,51) MIN
0.400 (10,20)
0.355 (9,00)
0.015 (0,38)
0.023 (0,58)
0.063 (1,60)
0.015 (0,38)
0.200 (5,08) MAX
0.130 (3,30) MIN
0.245 (6,22)
0.280 (7,11)
0.100 (2,54)
0°–15°
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. This package can be hermetically sealed with a ceramic lid using glass frit.
D. Index point is provided on cap for terminal identification only on press ceramic glass frit seal only.
E. Falls within MIL-STD-1835 GDIP1-T8
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
29
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
MECHANICAL DATA
N (R-PDIP-T**) PLASTIC DUAL-IN-LINE PACKAGE
20
0.975
(24,77)
0.940
(23,88)
18
0.920
0.850
14
0.775
0.745
(19,69)
(18,92)
16
0.775
(19,69)
(18,92)
0.745
A MIN
DIM
A MAX
PINS **
0.310 (7,87)
0.290 (7,37)
(23.37)
(21.59)
Seating Plane
0.010 (0,25) NOM
14/18 PIN ONL Y
4040049/C 08/95
9
8
0.070 (1,78) MAX
A
0.035 (0,89) MAX
0.020 (0,51) MIN
16
1
0.015 (0,38)
0.021 (0,53)
0.200 (5,08) MAX
0.125 (3,18) MIN
0.240 (6,10)
0.260 (6,60)
M
0.010 (0,25)
0.100 (2,54)
0°–15°
16 PIN SHOWN
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Falls within JEDEC MS-001 (20 pin package is shorter then MS-001.)
TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPER-STABILIZED
OPERATIONAL AMPLIFIERS
SLOS019C – SEPTEMBER 1988 – REVISED FEBRUARY 1999
30
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
MECHANICAL DATA
P (R-PDIP-T8) PLASTIC DUAL-IN-LINE PACKAGE
4040082/B 03/95
0.310 (7,87)
0.290 (7,37)
0.010 (0,25) NOM
0.400 (10,60)
0.355 (9,02)
58
41
0.020 (0,51) MIN
0.070 (1,78) MAX
0.240 (6,10)
0.260 (6,60)
0.200 (5,08) MAX
0.125 (3,18) MIN
0.015 (0,38)
0.021 (0,53)
Seating Plane
M
0.010 (0,25)
0.100 (2,54)
0°–15°
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Falls within JEDEC MS-001
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Copyright 1999, Texas Instruments Incorporated
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