The LT®6202/LT6203/LT6204 are single/dual/quad low
noise, rail-to-rail input and output unity gain stable op amps
that feature 1.9nV/√Hz noise voltage and draw only 2.5mA
of supply current per amplifier. These amplifiers combine
very low noise and supply current with a 100MHz gain
bandwidth product, a 25V/µs slew rate, and are optimized
for low supply signal conditioning systems.
These amplifiers maintain their performance for supplies
from 2.5V to 12.6V and are specified at 3V, 5V and ±5V
supplies. Harmonic distortion is less than –80dBc at
1MHz making these amplifiers suitable in low power data
acquisition systems.
The LT6202 is available in the 5-pin TSOT-23 and the 8-pin
SO, while the LT6203 comes in 8-pin SO and MSOP packages with standard op amp pinouts. For compact layouts
the LT6203 is also available in a tiny fine line leadless
package (DFN), while the quad LT6204 is available in the
16-pin SSOP and 14-pin SO packages. These devices
can be used as plug-in replacements for many op amps
to improve input/output range and noise performance.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
TYPICAL APPLICATION
Low Noise 4- to 2-Wire Local Echo Cancellation Differential Receiver
–
50Ω
1:1
50Ω
2k
••
2k
1k1k
–
1/2 LT6203
+
+
1/2 LT6203
–
1k1k
6203 TA01a
V
R
LINE
RECEIVER
LINE
DRIVER
1/2 LT1739
+
V
V
L
D
100Ω
LINE
+
1/2 LT1739
–
Line Receiver Integrated Noise 25kHz to 150kHz
5.0
4.5
)
4.0
RMS
3.5
3.0
2.5
2.0
1.5
INTEGRATED NOISE (µV
1.0
0.5
0
0
2060
40
BANDWIDTH (kHz)
80
100
120
140
6203 • TA01b
160
620234fd
1
LT6202/LT6203/LT6204
8-LEAD (3mm × 3mm) PLASTIC DFN
8-LEAD PLASTIC MSOP
8-LEAD PLASTIC SO
16-LEAD NARROW PLASTIC SSOP
14-LEAD PLASTIC SO
ABSOLUTE MAXIMUM RATINGS
Total Supply Voltage (V+ to V–) .............................. 12.6V
Input Current (Note 2)
Output Short-Circuit Duration (Note 3)
......................................... ±40mA
............ Indefinite
Operating Temperature Range (Note 4)
LT6202C/LT6203C/LT6204C ................–40°C to 85°C
LT6202I/LT6203I/LT6204I ...................–40°C to 85°C
LT6202H/LT6203H ............................. –40°C to 125°C
PIN CONFIGURATION
LT6202
OUT 1
–
2
V
+IN 3
5-LEAD PLASTIC TSOT-23
T
JMAX
TOP VIEW
5 V
–
+
S5 PACKAGE
= 150°C, θJA = 160°C/W
4 –IN
LT6202
+
NC
–IN
+IN
TOP VIEW
1
–
2
+
3
–
V
4
S8 PACKAGE
8-LEAD PLASTIC SO
T
= 150°C, θJA = 190°C/W
JMAX
NC
8
+
V
7
OUT
6
NC
5
(Note 1)
Specified Temperature Range (Note 4)
LT6202C/LT6203C/LT6204C ....................0°C to 70°C
LT6202I/LT6203I/LT6204I ...................–40°C to 85°C
LT6202H/LT6203H ............................. –40°C to 125°C
Junction Temperature
Storage Temperature Range
Lead Temperature (Soldering, 10 sec)
LT6203
–IN A
+IN A
V
UNDERSIDE METAL CONNECTED TO V
TOP VIEW
1OUT A
2
A
3
–
4
DD PACKAGE
T
= 150°C, θJA = 43°C/W
JMAX
........................................... 150°C
.................. –65°C to 150°C
...................300°C
LT6203
+
8
V
OUT B
7
–IN B
6
B
+IN B
5
–
OUT A
–IN A
+IN A
TOP VIEW
1
–
2
+
3
–
V
4
MS8 PACKAGE
T
= 150°C, θJA = 250°C/W
JMAX
+
8
V
7
OUT B
–
6
–IN B
+
5
+IN B
LT6203
OUT A
–IN A
+IN A
TOP VIEW
1
2
–
+
3
–
4
V
S8 PACKAGE
T
= 150°C, θJA = 190°C/W
JMAX
LT6204
+
V
8
OUT B
7
–
–IN B
6
+
+IN B
5
OUT A
–IN A
+IN A
+IN B
–IN B
OUT B
NC
TOP VIEW
1
2
–
A
+
3
+
4
V
+
5
BC
–
6
7
8
GN PACKAGE
T
= 150°C, θJA = 135°C/W
JMAX
OUT D
16
–
15
–IN D
D
+
14
+IN D
–
13
V
+
12
+IN C
–
11
–IN C
10
OUT C
9
NC
LT6204
OUT A
–IN A
+IN A
+IN B
–IN B
OUT B
TOP VIEW
1
2
–
A
+
3
+
V
4
+
5
BC
–
6
7
S PACKAGE
T
= 150°C, θJA = 150°C/W
JMAX
14
OUT D
–
13
–IN D
D
+
12
+IN D
–
11
V
10
+
+IN C
–
9
–IN C
8
OUT C
2
620234fd
ORDER INFORMATION
LT6202/LT6203/LT6204
LEAD FREE FINISHTAPE AND REELPART MARKING*PACKAGE DESCRIPTION
LT6202CS5#PBFLT6202CS5#TRPBFLTG65-Lead Plastic TSOT-230°C to 70°C
LT6202IS5#PBFLT6202IS5#TRPBFLTG65-Lead Plastic TSOT-23–40°C to 85°C
LT6202HS5#PBFLT6202HS5#TRPBFLTG65-Lead Plastic TSOT-23–40°C to 125°C
LT6202CS8#PBFLT6202CS8#TRPBF62028-Lead Plastic SO0°C to 70°C
LT6202IS8#PBFLT6202IS8#TRPBF6202I8-Lead Plastic SO–40°C to 85°C
LT6203CDD#PBFLT6203CDD#TRPBFLAAP8-Lead (3mm × 3mm) Plastic DFN0°C to 70°C
LT6203IDD#PBFLT6203IDD#TRPBFLAAP8-Lead (3mm × 3mm) Plastic DFN–40°C to 85°C
LT6203CMS8#PBFLT6203CMS8#TRPBFLTB28-Lead Plastic MSOP0°C to 70°C
LT6203IMS8#PBFLT6203IMS8#TRPBFLTB38-Lead Plastic MSOP–40°C to 85°C
LT6203HMS8#PBFLT6203HMS8#TRPBFLTB38-Lead Plastic MSOP–40°C to 125°C
LT6203CS8#PBFLT6203CS8#TRPBF62038-Lead Plastic SO0°C to 70°C
LT6203IS8#PBFLT6203IS8#TRPBF6203I8-Lead Plastic SO–40°C to 85°C
LT6204CGN#PBFLT6204CGN#TRPBF620416-Lead Narrow Plastic SSOP0°C to 70°C
LT6204IGN#PBFLT6204IGN#TRPBF6204I16-Lead Narrow Plastic SSOP–40°C to 85°C
LT6204CS#PBFLT6204CS#TRPBFLT6204CS14-Lead Plastic SO0°C to 70°C
LT6204IS#PBFLT6204IS#TRPBFLT6204IS14-Lead Plastic SO–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
SPECIFIED
TEMPERATURE RANGE
620234fd
3
LT6202/LT6203/LT6204
TA = 25°C, VS =5V, 0V; VS = 3V, 0V; VCM = V
ELECTRICAL CHARACTERISTICS
= half supply,
OUT
unless otherwise noted.
SYMBOLPARAMETERCONDITIONSMINTYPMAXUNITS
V
OS
Input Offset VoltageVS = 5V, 0V, V
Input Offset Voltage Match
(Channel-to-Channel) (Note 5)
I
B
∆I
B
I
OS
Input Bias CurrentV
IB ShiftV
Match (Channel-to-Channel) (Note 5)0.10.6µA
I
B
Input Offset CurrentV
Input Noise Voltage0.1Hz to 10Hz800nV
e
n
i
n
Input Noise Voltage Densityf = 100kHz, VS = 5V
Input Noise Current Density, Balanced
Input Noise Current Density, Unbalanced
Input ResistanceCommon Mode
C
IN
A
VOL
Input CapacitanceCommon Mode
Large Signal GainVS = 5V, VO = 0.5V to 4.5V, RL = 1k to VS/2
CMRRCommon Mode Rejection RatioV
CMRR Match (Channel-to-Channel) (Note 5)V
PSRRPower Supply Rejection RatioV
PSRR Match (Channel-to-Channel) (Note 5)V
Minimum Supply Voltage (Note 6)2.5V
V
OL
Output Voltage Swing LOW Saturation
(Note 7)
V
OH
Output Voltage Swing HIGH Saturation
(Note 7)
LT6203, LT6204, LT6202S8
LT6202 TSOT-23
V
= 3V, 0V, V
S
LT6203, LT6204, LT6202S8
LT6202 TSOT-23
V
= 5V, 0V, V
S
LT6203, LT6204, LT6202S8
LT6202 TSOT-23
V
= 3V, 0V, V
S
LT6203, LT6204, LT6202S8
LT6202 TSOT-23
V
= Half Supply
CM
V
= V– to V
CM
= Half Supply
CM
V
= V
CM
V
= V
CM
= V– to V
CM
= Half Supply
CM
V
= V
CM
V
= V
CM
f = 10kHz, V
f = 10kHz, VS = 5V0.75
Differential Mode
Differential Mode
V
= 5V, VO = 1V to 4V, RL = 100 to VS/2
S
V
= 3V, VO = 0.5V to 2.5V, RL = 1k to VS/2
S
= 5V, V
S
VS = 5V, V
V
= 3V, V
S
= 5V, V
S
= 2.5V to 10V, V
S
= 2.5V to 10V, V
S
No Load
I
= 5mA
SINK
V
= 5V, I
S
V
= 3V, I
S
No Load
I
= 5mA
SOURCE
V
= 5V, I
S
V
= 3V, I
S
+
–
+
–
= Half Supply
CM
= Half Supply
CM
= V+ to V–
CM
= V+ to V–
CM
+
+
= 5V
S
–7.0
–8.8
0.1
0.1
0.6
0.6
0.25
0.25
1.0
1.0
0.15
0.3
–1.3
1.3
0.5
0.7
1.5
1.7
2.0
2.2
3.5
3.7
0.8
1.8
2.5
–3.3
4.711.3µA
0.12
0.07
0.12
2
2.9
1
1
1.1
4.5
1.1
4
12
1.8
1.5
40
8.0
17
= V– to V
CM
= 1.5V to 3.5V
CM
= V– to V
CM
= 1.5V to 3.5V85120dB
CM
SINK
SINK
SOURCE
SOURCE
+
+
= 0V6074dB
CM
= 0V70100dB
CM
60
80
56
= 20mA
= 15mA
= 20mA
= 15mA
70
14
40
83
100
80
5
85
240
185
25
90
325
225
50
190
460
350
75
210
600
410
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
µA
µA
µA
µA
µA
µA
P-P
nV/√Hz
nV/√Hz
pA/√Hz
pA/√Hz
MΩ
kΩ
pF
pF
V/mV
V/mV
V/mV
dB
dB
dB
mV
mV
mV
mV
mV
mV
mV
mV
4
620234fd
LT6202/LT6203/LT6204
TA = 25°C, VS =5V, 0V; VS = 3V, 0V; VCM = V
ELECTRICAL CHARACTERISTICS
= half supply,
OUT
unless otherwise noted.
SYMBOLPARAMETERCONDITIONSMINTYPMAXUNITS
I
SC
I
S
GBWGain Bandwidth ProductFrequency = 1MHz, V
SRSlew RateV
FPBWFull Power Bandwidth (Note 9)V
t
S
Short-Circuit CurrentVS = 5V
V
= 3V
S
Supply Current per AmpVS = 5V
V
= 3V
S
= 5V, AV = –1, RL = 1k, VO = 4V1724V/µs
S
= 5V, V
S
OUT
= 3V
Settling Time0.1%, VS = 5V, V
±30
±25
= 5V90MHz
S
P-P
= 2V, AV = –1, RL = 1k85ns
STEP
1.82.5MHz
±45
±40
2.5
2.3
3.0
2.85
mA
mA
mA
mA
The l denotes the specifications which apply over 0°C < TA < 70°C temperature range. VS = 5V, 0V; VS = 3V, 0V;
V
= V
CM
SYMBOL PARAMETERCONDITIONSMINTYPMAXUNITS
V
OS
V
OS
I
B
∆I
B
I
OS
A
VOL
CMRRCommon Mode Rejection RatioV
PSRRPower Supply Rejection RatioV
V
OL
= half supply, unless otherwise noted.
OUT
Input Offset VoltageVS = 5V, 0V, V
= Half Supply
CM
LT6203, LT6204, LT6202S8
LT6202 TSOT-23
V
= 3V, 0V, V
S
= Half Supply
CM
LT6203, LT6204, LT6202S8
LT6202 TSOT-23
V
= 5V, 0V, V
S
= V+ to V
CM
LT6203, LT6204, LT6202S8
LT6202 TSOT-23
V
= 3V, 0V, V
S
= V+ to V
CM
LT6203, LT6204, LT6202S8
LT6202 TSOT-23
TCInput Offset Voltage Drift (Note 8)V
Input Offset Voltage Match
(Channel-to-Channel) (Note 5)
Input Bias CurrentV
IB ShiftV
Match (Channel-to-Channel) (Note 5)
I
B
Input Offset CurrentV
= Half Supply
CM
= Half Supply
V
CM
V
= V– to V
CM
= Half Supply
CM
= V
V
CM
V
= V
CM
= V– to V
CM
= Half Supply
CM
= V
V
CM
V
= V
CM
+
+
–
+
+
–
Large Signal GainVS = 5V, VO = 0.5V to 4.5V, RL = 1k to VS/2
= 5V, VO = 1.5V to 3.5V, RL = 100 to VS/2
V
S
= 3V, VO = 0.5V to 2.5V, RL = 1k to VS/2
V
CMRR Match (Channel-to-Channel) (Note 5)V
PSRR Match (Channel-to-Channel) (Note 5)V
S
= 5V, V
S
VS = 5V, V
= 3V, V
V
S
= 5V, V
S
= 3V to 10V, V
S
= 3V to 10V, V
S
= V– to V
CM
= 1.5V to 3.5V
CM
= V– to V
CM
= 1.5V to 3.5V
CM
CM
CM
+
+
= 0V
= 0V
Minimum Supply Voltage (Note 6)
Output Voltage Swing LOW Saturation
(Note 7)
No Load
= 5mA
I
SINK
= 15mA
I
SINK
l
l
l
l
–
–
l
l
l
l
l
l
l
l
–7.0
l
l
–8.8
l
l
l
l
l
l
35
l
6.0
l
15
l
60
l
78
l
56
l
83100dB
l
6070dB
l
70100dB
l
3.0V
l
l
l
0.2
0.2
0.6
0.6
0.7
0.7
1.2
1.2
0.7
0.9
1.7
1.9
2.5
2.7
4.0
4.2
3.09.0µV/°C
0.15
0.5
–1.3
1.3
0.9
2.3
2.5
–3.3
4.711.3µA
0.10.6µA
0.15
0.10
0.15
60
12
36
1
1
1.1
V/mV
V/mV
V/mV
83
97
75
5.0
95
260
60
200
365
620234fd
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
µA
µA
µA
µA
µA
µA
dB
dB
dB
mV
mV
mV
5
LT6202/LT6203/LT6204
The l denotes the specifications which apply over 0°C < TA < 70°C
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: Inputs are protected by back-to-back diodes and diodes to each
supply. If the inputs are taken beyond the supplies or the differential input
voltage exceeds 0.7V, the input current must be limited to less than 40mA.
Note 3: A heat sink may be required to keep the junction temperature
below the absolute maximum rating when the output is shorted
indefinitely.
Note 4: The LT6202C/LT6203C/LT6204C are guaranteed to meet specified
performance from 0°C to 70°C. The LT6202C/LT6203C/LT6204C are
designed, characterized and expected to meet specified performance from
–40°C to 85°C, but are not tested or QA sampled at these temperatures.
The LT6202I/LT6203I/LT6204I are guaranteed to meet specified
performance from –40°C to 85°C. The LT6202H and LT6203H are
guaranteed to meet specified performance from –40°C to 125°C.
Note 5: Matching parameters are the difference between the two amplifiers
A and D and between B and C of the LT6204; between the two amplifiers
of the LT6203. CMRR and PSRR match are defined as follows: CMRR and
PSRR are measured in µV/V on the identical amplifiers. The difference is
calculated between the matching sides in µV/V. The result is converted to dB.
Note 6: Minimum supply voltage is guaranteed by power supply rejection
ratio test.
Note 7: Output voltage swings are measured between the output and
power supply rails.
Note 8: This parameter is not 100% tested.
Note 9: Full-power bandwidth is calculated from the slew rate:
FPBW = SR/2πV
Note 10: Differential gain and phase are measured using a Tektronix
TSG120YC/NTSC signal generator and a Tektronix 1780R Video
Measurement Set. The resolution of this equipment is 0.1% and 0.1°. Ten
identical amplifier stages were cascaded giving an effective resolution of
0.01% and 0.01°.
P
12
620234fd
TYPICAL PERFORMANCE CHARACTERISTICS
LT6202/LT6203/LT6204
Distribution, VCM = V+/2VOS Distribution, VCM = V
V
OS
45
VS = 5V, 0V
S8
40
35
30
25
20
15
NUMBER OF UNITS
10
5
0
–150–50 0250
–250
INPUT OFFSET VOLTAGE (µV)
50150
Supply Current vs Supply Voltage
(Both Amplifiers)
12
10
8
6
4
SUPPLY CURRENT (mA)
2
0
0610
TA = 125°C
TA = 25°C
TA = –55°C
24
TOTAL SUPPLY VOLTAGE (V)
81214
LT6202/03/04 G01
LT6202/03/04 G04
60
VS = 5V, 0V
S8
50
40
30
20
NUMBER OF UNITS
10
0
–600–200
–400
–800
INPUT OFFSET VOLTAGE (µV)
Offset Voltage vs Input
Common Mode Voltage
2.0
1.5
1.0
0.5
0
OFFSET VOLTAGE (mV)
–0.5
–1.0
–1
01
INPUT COMMON MODE VOLTAGE (V)
2001000
0
TA = 125°C
TA = 25°C
TA = –55°C
356
24
+
600
800
400
LT6202/03/04 G02
VS = 5V, 0V
TYPICAL PART
LT6202/03/04 G05
VOS Distribution, VCM = V
60
VS = 5V, 0V
S8
50
40
30
20
NUMBER OF UNITS
10
0
–600–200
–800
–4000
INPUT OFFSET VOLTAGE (µV)
Input Bias Current
vs Common Mode Voltage
2
VS = 5V, 0V
0
–2
TA = –55°C
–4
INPUT BIAS CURRENT (µA)
–6
–1
TA = 25°C
TA = 125°C
0123
COMMON MODE VOLTAGE (V)
200
400
456
–
600
LT6202/03/04 G03
LT6202/03/04 G06
800
Input Bias Current vs Temperature
4
VS = 5V, 0V
3
2
1
0
–1
–2
–3
INPUT BIAS CURRENT (µA)
–4
–5
–6
–35–5
–50
VCM = 5V
VCM = 0V
–20
10
TEMPERATURE (°C)
2585
40
55
70
LT6202/03/04 G07
Output Saturation Voltage
vs Load Current (Output Low)
10
VS = 5V, 0V
1
TA = 125°C
0.1
0.01
OUTPUT SATURATION VOLTAGE (V)
0.001
0.01110100
TA = 25°C
TA = –55°C
0.1
LOAD CURRENT (mA)
LT6202/03/04 G08
Output Saturation Voltage
vs Load Current (Output High)
10
VS = 5V, 0V
1
TA = 25°C
0.1
0.01
OUTPUT SATURATION VOLTAGE (V)
0.001
0.01110100
TA = 125°C
TA = –55°C
0.1
LOAD CURRENT (mA)
LT6202/03/04 G09
620234fd
13
LT6202/LT6203/LT6204
TYPICAL PERFORMANCE CHARACTERISTICS
Output Short-Circuit Current
Minimum Supply Voltage
10
8
6
4
2
0
–2
–4
–6
CHANGE IN OFFSET VOLTAGE (mV)
–8
–10
TA = 25°C
1
1.52.54 4.5
TA = 125°C
TA = –55°C
23 3.5
TOTAL SUPPLY VOLTAGE (V)
5
LT6202/03/04 G10
Open-Loop GainOpen-Loop GainOffset Voltage vs Output Current
2.5
VS = 5V, 0V
2.0
TA = 25°C
1.5
1.0
0.5
0
–0.5
–1.0
INPUT VOLTAGE (mV)
–1.5
–2.0
–2.5
0
RL = 100Ω
1234
OUTPUT VOLTAGE (V)
RL = 1k
5
LT6202/03/04 G13
vs Power Supply VoltageOpen-Loop Gain
80
SOURCING
60
40
20
0
SINKING
–20
–40
–60
OUTPUT SHORT-CIRCUIT CURRENT (mA)
–80
22.53.5
1.5
POWER SUPPLY VOLTAGE (±V)
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
INPUT VOLTAGE (mV)
–1.5
–2.0
–2.5
–3–4
–5
OUTPUT VOLTAGE (V)
TA = –55°C
TA = 125°C
3
–1–2
0
TA = 125°C
TA = 25°C
TA = –55°C
TA = 25°C
44.55
TA = 25°C
RL = 1k
RL = 100Ω
1 24
LT6202/03/04 G11
VS = ±5V
3
LT6202/03/04 G14
5
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
INPUT VOLTAGE (mV)
–1.5
–2.0
–2.5
0
15
10
5
0
–5
OFFSET VOLTAGE (mV)
–10
–15
–80
VS = 3V, 0V
TA = 25°C
VS = ±5V
–60–20
0.5
1.0
OUTPUT VOLTAGE (V)
TA = 125°C
TA = –55°C
–400
OUTPUT CURRENT (mA)
RL = 100Ω
1.52.0
20
RL = 1k
2.5
LT6202/03/04 G12
TA = 25°C
40
LT6202/03/04 G15
3.0
60
80
Warm-Up Drift vs Time
(LT6203S8)
160
TA = 25°C
140
120
100
80
60
40
CHANGE IN OFFSET VOLTAGE (µV)
20
0
20
0
14
VS = ±5V
VS = ±2.5V
VS = ±1.5V
80
40
60
TIME AFTER POWER-UP (s)
100
120
140
LT6202/03/04 G16
160
Total Noise
vs Total Source ResistanceInput Noise Voltage vs Frequency
100
VS = ±2.5V
= 0V
V
CM
f = 100kHz
10
1
TOTAL NOISE VOLTAGE (nV/√Hz)
0.1
101k10k100k
TOTAL SPOT NOISE
AMPLIFIER SPOT
NOISE VOLTAGE
RESISTOR
SPOT
NOISE
100
TOTAL SOURCE RESISTANCE (Ω)
LT6202/03/04 G17
25
20
NOISE VOLTAGE (nV√Hz)
10
45
40
35
30
15
5
0
10
NPN ACTIVE
= 4.5V
V
CM
PNP ACTIVE
= 0.5V
V
CM
BOTH ACTIVE
= 2.5V
V
CM
100100k
1k
FREQUENCY (Hz)
VS = 5V, 0V
TA = 25°C
10k
LT6202/03/04 G18
620234fd
TYPICAL PERFORMANCE CHARACTERISTICS
LT6202/LT6203/LT6204
Balanced Noise Current
vs Frequency
7
6
5
PNP ACTIVE
= 0.5V
V
4
3
2
1
BALANCED NOISE CURRENT (pA/√Hz)
0
CM
101k10k100k
100
FREQUENCY (Hz)
BALANCED SOURCE
RESISTANCE
BOTH ACTIVE
= 2.5V
V
CM
VS = 5V, 0V
= 25°C
T
A
NPN ACTIVE
V
CM
= 4.5V
LT6202/03/04 G19
Unbalanced Noise Current
vs Frequency
12
10
PNP ACTIVE
8
6
4
2
UNBALANCED NOISE CURRENT (pA/√Hz)
0
101k10k100k
= 0.5V
V
CM
100
UNBALANCED SOURCE
RESISTANCE
VS = 5V, 0V
= 25°C
T
A
BOTH ACTIVE
= 2.5V
V
CM
FREQUENCY (Hz)
NPN ACTIVE
= 4.5V
V
CM
LT6202/03/04 G19.1
0.1Hz to 10Hz
Output Voltage Noise
1200
VS = 5V, 0V
= VS/2
V
1000
CM
800
400
0
–400
OUTPUT VOLTAGE (nV)
–800
–1000
– 1200
TIME (2s/DIV)
Gain Bandwidth and Phase
Margin vs TemperatureOpen-Loop Gain vs FrequencyOpen-Loop Gain vs Frequency
VS = ±5V
PHASE MARGIN
VS = 3V, 0V
120
100
80
60
40
GAIN BANDWITH (MHz)
–55
VS = ±5V
GAIN BANDWIDTH
0
–25
TEMPERATURE (°C)
VS = 3V, 0V
25125
50
75100
LT6202/03/04 G21
PHASE MARGIN (DEG)
90
80
70
60
80
70
60
50
40
30
GAIN (dB)
20
10
0
–10
–20
100k10M100M1G
CL = 5pF
= 1k
R
L
= 0V
V
CM
VS = 3V, 0V
GAIN
VS = 3V, 0V
1M
FREQUENCY (Hz)
PHASE
VS = ±5V
VS = ±5V
LT6202/03/04 G22
120
100
80
60
PHASE (DEG)
40
20
0
–20
–40
–60
–80
80
70
60
50
40
30
GAIN (dB)
20
10
0
–10
–20
100k10M100M1G
VCM = 4.5V
VS = 5V, 0V
= 5pF
C
L
= 1k
R
L
1M
PHASE
VCM = 4.5V
GAIN
VCM = 0.5V
FREQUENCY (Hz)
LT6202/03/04 G20
VCM = 0.5V
LT6202/03/04 G23
120
100
80
60
PHASE (DEG)
40
20
0
–20
–40
–60
–80
Gain Bandwidth and Phase
Margin vs Supply VoltageSlew Rate vs TemperatureOutput Impedance vs Frequency
TA = 25°C
= 1k
R
L
= 5pF
C
L
120
100
GAIN BANDWITH (MHz)
80
60
40
0
GAIN BANDWIDTH
248
TOTAL SUPPLY VOLTAGE (V)
PHASE MARGIN
6
90
80
70
60
50
101214
LT6202/03/04 G24
70
AV = –1
= RG = 1k
R
F
60
= 1k
R
SLEW RATE (V/µs)
50
40
30
20
10
0
VS = ±5V
–55
L
VS = ±2.5V
–250
PHASE MARGIN (DEG)
VS = ±2.5V
FALLING
VS = ±5V
50100 125
2575
TEMPERATURE (°C)
RISING
LT6202/03/04 G25
1000
VS = 5V, 0V
100
AV = 10
10
AV = 2
1
OUTPUT IMPEDANCE (Ω)
0.1
0.01
100k10M100M
AV = 1
1M
FREQUENCY (Hz)
LT6202/03/04 G26
620234fd
15
LT6202/LT6203/LT6204
TYPICAL PERFORMANCE CHARACTERISTICS
Common Mode Rejection Ratio
vs FrequencyChannel Separation vs Frequency
120
VS = 5V, 0V
= VS/2
V
CM
100
80
60
40
20
COMMON MODE REJECTION RATIO (dB)
0
10k1M10M1G
100k100M
FREQUENCY (Hz)
Series Output Resistor
vs Capacitive Load
40
VS = 5V, 0V
= 1
A
35
V
30
25
20
15
OVERSHOOT (%)
10
5
0
10
RS = 50Ω
RL = 50Ω
1001000
CAPACITIVE LOAD (pF)
RS = 10Ω
RS = 20Ω
LT6202/03/04 G27
LT6202/03/04 G29
–40
TA = 25°C
= 1
A
V
–50
= ±5V
V
S
–60
–70
–80
–90
VOLTAGE GAIN (dB)
–100
–110
–120
0.1
110100
FREQUENCY (MHz)
Series Output Resistor
vs Capacitive Load
40
VS = 5V, 0V
= 2
A
V
35
30
25
20
15
OVERSHOOT (%)
10
5
0
10
CAPACITIVE LOAD (pF)
RS = 10Ω
RS = 20Ω
RS = 50Ω
RL = 50Ω
1001000
LT6202/03/04 G27.1
LT6202/03/04 G30
Power Supply Rejection Ratio
vs Frequency
80
70
60
50
40
30
20
10
COMMON MODE REJECTION RATIO (dB)
0
10k
1k100k1M100M
FREQUENCY (Hz)
NEGATIVE
SUPPLY
VS = 5V, 0V
= 25°C
T
A
V
CM
POSITIVE
SUPPLY
10M
Settling Time vs Output Step
(Noninverting)
200
VS = ±5V
= 1
A
V
= 25°C
T
A
150
100
SETTLING TIME (ns)
50
10mV
0
–4
–3 –2 –10
–
+
V
IN
1mV
OUTPUT STEP (V)
V
OUT
500Ω
1mV
1234
= VS/2
LT6202/03/04 G28
10mV
LT6202/03/04 G31
Settling Time vs Output Step
(Inverting)
200
VS = ±5V
= –1
A
V
= 25°C
T
150
A
V
IN
100
1mV
SETTLING TIME (ns)
50
10mV
0
–4
–3 –2 –10
OUTPUT STEP (V)
16
500Ω
500Ω
–
+
1mV
1234
V
OUT
10mV
LT6202/03/04 G32
Maximum Undistorted Output
Signal vs FrequencyDistortion vs Frequency
10
9
)
P-P
8
7
6
5
4
VS = ±5V
OUTPUT VOLTAGE SWING (V
= 25°C
T
3
A
HD2, HD3 < –40dBc
2
10k
AV = 2
AV = –1
100k1M10M
FREQUENCY (Hz)
LT6202/03/04 G33
–40
AV = 1
V
–50
V
–60
–70
–80
DISTORTION (dBc)
–90
–100
10k
= ±2.5V
S
= 2V
OUT
(P-P)
RL = 100Ω, 3RD
RL = 100Ω, 2ND
100k1M10M
FREQUENCY (Hz)
RL = 1k, 3RD
RL = 1k, 2ND
LT6202/03/04 G34
620234fd
LT6202/LT6203/LT6204
TYPICAL PERFORMANCE CHARACTERISTICS
Distortion vs FrequencyDistortion vs FrequencyDistortion vs Frequency
Figure 1 shows a simplified schematic of the LT6202/
LT6203/LT6204, which has two input differential amplifiers in parallel that are biased on simultaneously when
the common mode voltage is at least 1.5V from either
rail. This topology allows the input stage to swing from
the positive supply voltage to the negative supply voltage.
As the common mode voltage swings beyond V
current source I
saturates and current in Q1/Q4 is zero.
1
– 1.5V,
CC
Feedback is maintained through the Q2/Q3 differential
amplifier, but with an input g
effect occurs with I
when the common mode voltage
2
reduction of 1/2. A similar
m
swings within 1.5V of the negative rail. The effect of the
reduction is a shift in the VOS as I1 or I2 saturate.
g
m
R1R2
I
1
+V
–V
DESD1
+
–
DESD2
Q2Q3
Q1Q4
D2D1
DESD4DESD3
–V
+V
R3R4R5
I
2
Input bias current normally flows out of the + and – inputs.
The magnitude of this current increases when the input
common mode voltage is within 1.5V of the negative rail,
and only Q1/Q4 are active. The polarity of this current
reverses when the input common mode voltage is within
1.5V of the positive rail and only Q2/Q3 are active.
The second stage is a folded cascode and current mir-
ror that converts the input stage differential signals to a
single ended output. Capacitor C1 reduces the unity cross
frequency and improves the frequency stability without degrading the gain bandwidth of the amplifier. The
differential drive generator supplies current to the output
transistors that swing from rail-to-rail.
+
Q11
Q10
V
+V
DESD5
DESD6
–V
–
V
6203/04 F01
+
V
BIAS
–
Q5
C1
Q8
D3
Q6
C
+V
Q9
M
DIFFERENTIAL
DRIVE
GENERATOR
Q7
18
Figure 1. Simplified Schematic
620234fd
APPLICATIONS INFORMATION
LT6202/LT6203/LT6204
Input Protection
There are back-to-back diodes, D1 and D2, across the
+ and – inputs of these amplifiers to limit the differential
input voltage to ±0.7V. The inputs of the LT6202/LT6203/
LT6304 do not have internal resistors in series with the
input transistors. This technique is often used to protect
the input devices from over voltage that causes excessive
currents to flow. The addition of these resistors would
significantly degrade the low noise voltage of these amplifiers. For instance, a 100Ω resistor in series with each input
would generate 1.8nV/√Hz of noise, and the total amplifier
noise voltage would rise from 1.9nV/√Hz to 2.6nV/√Hz.
Once the input differential voltage exceeds ±0.7V, steady
state current conducted though the protection diodes
should be limited to ±40mA. This implies 25Ω of protection resistance per volt of continuous overdrive beyond
±0.7V. The input diodes are rugged enough to handle
transient currents due to amplifier slew rate overdrive or
momentary clipping without these resistors.
Figure 2 shows the input and output waveforms of the
amplifier driven into clipping while connected in a gain
= 1. When the input signal goes sufficiently beyond
of A
V
the power supply rails, the input transistors will saturate.
When saturation occurs, the amplifier loses a stage of
phase inversion and the output tries to change states.
Diodes D1 and D2 forward bias and hold the output within
a diode drop of the input signal. In this photo, the input
signal generator is clipping at ±35mA, and the output
transistors supply this generator current through the
protection diodes.
With the amplifier connected in a gain of A
≥ 2, the output
V
can invert with very heavy input overdrive. To avoid this
inversion, limit the input overdrive to 0.5V beyond the
power supply rails.
ESD
The LT6202/LT6203/LT6204 have reverse-biased ESD
protection diodes on all inputs and outputs as shown in
Figure 1. If these pins are forced beyond either supply,
unlimited current will flow through these diodes. If the
current is transient and limited to one hundred milliamps
or less, no damage to the device will occur.
Noise
The noise voltage of the LT6202/LT6203/LT6204 is equivalent to that of a 225Ω resistor, and for the lowest possible
noise it is desirable to keep the source and feedback re-
||
+ R
sistance at or below this value, i.e. R
||
+ R
With R
is: e
S
= √(1.9nV)2+(1.9nV)2 = 2.7nV. Below this resis-
n
RFB = 225Ω the total noise of the amplifier
G
S
RFB ≤ 225Ω.
G
tance value, the amplifier dominates the noise, but in the
resistance region between 225Ω and approximately 10kΩ,
the noise is dominated by the resistor thermal noise. As
the total resistance is further increased, beyond 10k, the
noise current multiplied by the total resistance eventually
dominates the noise.
OV
Figure 2. VS = ±2.5V, AV = 1 with Large Overdrive
The product of e
n
• √I
low noise amplifiers. Many low noise amplifiers with low e
have high I
current. In applications that require low
SUPPLY
is an interesting way to gauge
SUPPLY
n
noise with the lowest possible supply current, this product
can prove to be enlightening. The LT6202/LT6203/LT6204
have an e
n
, √I
product of 3.2 per amplifier, yet it is
SUPPLY
common to see amplifiers with similar noise specifications
have an e
• √I
n
SUPPLY
product of 4.7 to 13.5.
For a complete discussion of amplifier noise, see the
LT1028 data sheet.
620234fd
19
LT6202/LT6203/LT6204
TYPICAL APPLICATIONS
Low Noise, Low Power 1MΩ AC
Photodiode Transimpedance Amplifier
Figure 3 shows the LT6202 applied as a transimpedance
amplifier (TIA). The LT6202 forces the BF862 ultralow-noise
JFET source to 0V, with R3 ensuring that the JFET has an
of 1mA. The JFET acts as a source follower, buffering
I
DRAIN
the input of the LT6202 and making it suitable for the high
impedance feedback elements R1 and R2. The BF862 has
a minimum I
of 10mA and a pinchoff voltage between
DSS
–0.3V and –1.2V. The JFET gate and the LT6202 output
+
V
S
PHILIPS
BF862
–
V
BIAS
R3
4.99k
–
V
S
Figure 3. Low Noise, Low Power 1MΩ
AC Photodiode Transimpedance Amplifier
R1
499k
–
+
LT6202
VS = ±5V
R2
499k
C1
1pF
V
OUT
LT6202/03/04 F03
therefore sit at a point slightly higher than one pinchoff
voltage below ground (typically about –0.6V). When the
photodiode is illuminated, the current must come from the
LT6202’s output through R1 and R2, as in a normal TIA.
Amplifier input noise density and gain-bandwidth product
were measured at 2.4nV/Hz and 100MHz, respectively.
Note that because the JFET has a high g
, approximately
m
1/80Ω, its attenuation looking into R3 is only about 2%.
Gain-bandwidth product was measured at 100MHz and
the closed-loop bandwidth using a 3pF photodiode was
approximately 1.4MHz.
Figure 4 shows the LT6202 applied as a transimpedance
amplifier (TIA), very similar to that shown in Figure 3.
In this case, however, the JFET is not allowed to dictate
the DC-bias conditions. Rather than being grounded, the
LT6202’s noninverting input is driven by the LTC2050 to
the exact state necessary for zero JFET gate voltage. The
noise performance is nearly identical to that of the circuit
in Figure 3, with the additional benefit of excellent DC performance. Input offset was measured at under 200µV and
output noise was within 2mV
+
V
S
R1
499k
R2
499k
over a 20MHz bandwidth.
P-P
20
V
BIAS
PHILIPS
R3
4.99k
V
BF862
–
S
–
LT6202
+
VS = ±5V
–
LTC2050HV
+
C2
0.1µF
R5
10k
C3
1µF
R4
10M
–
Figure 4. Precision Low Noise, Low Power Transimpedance Amplifier
C1
1pF
LT6202/03/04 F04
V
OUT
620234fd
TYPICAL APPLICATIONS
LT6202/LT6203/LT6204
Single-Supply 16-Bit ADC Driver
Figure 5 shows the LT6203 driving an LTC1864 unipolar
16-bit A/D converter. The bottom half of the LT6203 is
in a gain-of-one configuration and buffers the 0V negative full-scale signal V
into the negative input of the
LOW
LTC1864. The top half of the LT6203 is in a gain-of-ten
configuration referenced to the buffered voltage V
LOW
and
drives the positive input of the LTC1864. The input range
of the LTC1864 is 0V to 5V, but for best results the input
range of V
should be from V
IN
(about 0.4V) to about
LOW
0.82V. Figure 6 shows an FFT obtained with a 10.1318kHz
coherent input waveform, from 8192 samples with no
windowing or averaging. Spurious free dynamic range is
seen to be about 100dB.
= 0.6V
V
IN
DC
±200mV
AC
V
= 0.4V
LOW
DC
+
1/2 LT6203
–
+
1/2 LT6203
R1
1k
R2
110Ω
–
R3
100Ω
R4
100Ω
Although the LTC1864 has a sample rate far below the
gain bandwidth of the LT6203, using this amplifier is not
necessarily a case of overkill. The designer is reminded that
A/D converters have sample apertures that are vanishingly
small (ideally, infinitesimally small) and make demands on
the upstream circuitry far in excess of what is implied by
the innocent-looking sample rate. In addition, when an A/D
converter takes a sample, it applies a small capacitor to
its inputs with a fair amount of glitch energy and expects
the voltage on the capacitor to settle to the true value very
quickly. Finally, the LTC1864 has a 20MHz analog input
bandwidth and can be used in undersampling applications,
again requiring a source bandwidth higher than Nyquist.
5V
+
470pF
C1
LTC1864
16-BIT
250ksps
–
SERIAL
DATA
OUT
Figure 5. Single-Supply 16-Bit ADC Driver
0
–10
–20
–30
–40
–50
–60
–70
–80
SFDR (dB)
–90
–100
–110
–120
–130
–140
–150
0
37.562.5100
12.5 255075 82.5112.5 125
FREQUENCY (kHz)
fS = 250ksps
= 10.131836kHz
f
IN
LT6202/03/04 F06
Figure 6. FFT Showing 100dB SFDR
LT6202/03/04 F05
620234fd
21
LT6202/LT6203/LT6204
R = 0.125
.189 – .196*
(0.178 – 0.249)
PACKAGE DESCRIPTION
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
DD Package
8-Lead Plastic DFN (3mm × 3mm)
(Reference LTC DWG # 05-08-1698 Rev C)
0.70 ±0.05
TYP
0.40 ± 0.10
85
3.5 ±0.05
1.65 ±0.05
(2 SIDES)2.10 ±0.05
PACKAGE
OUTLINE
0.25 ± 0.05
0.50
BSC
2.38 ±0.05
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED
NOTE:
1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-1)
2. DRAWING NOT TO SCALE
3. ALL DIMENSIONS ARE IN MILLIMETERS
4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE
PIN 1
TOP MARK
(NOTE 6)
0.200 REF
GN Package
16-Lead Plastic SSOP (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1641)
.045 ±.005
.254 MIN
.150 – .165
3.00 ±0.10
(4 SIDES)
0.75 ±0.05
5. EXPOSED PAD SHALL BE SOLDER PLATED
6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION
ON TOP AND BOTTOM OF PACKAGE
16
15
1.65 ± 0.10
(2 SIDES)
0.00 – 0.05
(4.801 – 4.978)
12 11 10
14
13
0.25 ± 0.05
2.38 ±0.10
BOTTOM VIEW—EXPOSED PAD
.009
(0.229)
9
REF
14
0.50 BSC
(DD8) DFN 0509 REV C
22
.0250 BSC.0165 ±.0015
RECOMMENDED SOLDER PAD LAYOUT
.015 ±.004
(0.38 ±0.10)
.007 – .0098
.016 – .050
NOTE:
1. CONTROLLING DIMENSION: INCHES
2. DIMENSIONS ARE IN
3. DRAWING NOT TO SCALE
* DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
(0.406 – 1.270)
INCHES
(MILLIMETERS)
0° – 8° TYP
× 45°
.229 – .244
(5.817 – 6.198)
.0532 – .0688
(1.35 – 1.75)
.008 – .012
(0.203 – 0.305)
TYP
1 2
3
5
4
678
.0250
(0.635)
BSC
.150 – .157**
(3.810 – 3.988)
.004 – .0098
(0.102 – 0.249)
GN16 (SSOP) 0204
620234fd
LT6202/LT6203/LT6204
0.889 ± 0.127
PACKAGE DESCRIPTION
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
MS8 Package
8-Lead Plastic MSOP
(Reference LTC DWG # 05-08-1660 Rev F)
(.035 ± .005)
0.42 ± 0.038
(.0165 ± .0015)
GAUGE PLANE
(.007)
5.23
(.206)
MIN
TYP
RECOMMENDED SOLDER PAD LAYOUT
0.254
(.010)
0.18
NOTE:
1. DIMENSIONS IN MILLIMETER/(INCH)
2. DRAWING NOT TO SCALE
3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS.
MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE
4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.
INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE
5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX
DETAIL “A”
(.126 – .136)
(.0256)
0° – 6° TYP
DETAIL “A”
3.20 – 3.45
0.65
BSC
0.53 ± 0.152
(.021 ± .006)
SEATING
PLANE
3.00 ± 0.102
(.118 ± .004)
(NOTE 3)
4.90 ± 0.152
(.193 ± .006)
0.22 – 0.38
(.009 – .015)
TYP
1.10
(.043)
MAX
8
1 2
0.65
(.0256)
BSC
7
6
5
4
3
0.52
(.0205)
REF
3.00 ± 0.102
(.118 ± .004)
(NOTE 4)
0.86
(.034)
REF
0.1016 ± 0.0508
(.004 ± .002)
MSOP (MS8) 0307 REV F
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23
LT6202/LT6203/LT6204
.189 – .197
PACKAGE DESCRIPTION
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
S8 Package
8-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1610)
.050 BSC
.245
MIN
.030 ±.005
TYP
RECOMMENDED SOLDER PAD LAYOUT
.010 – .020
(0.254 – 0.508)
.008 – .010
(0.203 – 0.254)
NOTE:
1. DIMENSIONS IN
2. DRAWING NOT TO SCALE
3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)
× 45°
.016 – .050
(0.406 – 1.270)
INCHES
(MILLIMETERS)
.045 ±.005
.160 ±.005
.228 – .244
(5.791 – 6.197)
0°– 8° TYP
.053 – .069
(1.346 – 1.752)
.014 – .019
(0.355 – 0.483)
TYP
(4.801 – 5.004)
8
1
NOTE 3
7
2
5
6
.150 – .157
(3.810 – 3.988)
NOTE 3
3
4
.004 – .010
(0.101 – 0.254)
.050
(1.270)
BSC
SO8 0303
24
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LT6202/LT6203/LT6204
.337 – .344
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)
PACKAGE DESCRIPTION
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
S Package
14-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1610)
.050 BSC
N
.245
MIN
123N/2
.030 ±.005
TYP
RECOMMENDED SOLDER PAD LAYOUT
.010 – .020
(0.254 – 0.508)
.008 – .010
(0.203 – 0.254)
NOTE:
1. DIMENSIONS IN
2. DRAWING NOT TO SCALE
3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
× 45°
.016 – .050
(0.406 – 1.270)
INCHES
(MILLIMETERS)
.045 ±.005
.160 ±.005
.228 – .244
(5.791 – 6.197)
0° – 8° TYP
.053 – .069
(1.346 – 1.752)
.014 – .019
(0.355 – 0.483)
TYP
(8.560 – 8.738)
NOTE 3
13
12
3
1110
4
.050
(1.270)
BSC
5
14
N
1
2
8
9
.150 – .157
(3.810 – 3.988)
N/2
7
6
NOTE 3
.004 – .010
(0.101 – 0.254)
S14 0502
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25
LT6202/LT6203/LT6204
0.62
0.95
PACKAGE DESCRIPTION
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
S5 Package
5-Lead Plastic TSOT-23
(Reference LTC DWG # 05-08-1635)
MAX
3.85 MAX
0.20 BSC
DATUM ‘A’
NOTE:
1. DIMENSIONS ARE IN MILLIMETERS
2. DRAWING NOT TO SCALE
3. DIMENSIONS ARE INCLUSIVE OF PLATING
4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
5. MOLD FLASH SHALL NOT EXCEED 0.254mm
6. JEDEC PACKAGE REFERENCE IS MO-193
2.62 REF
RECOMMENDED SOLDER PAD LAYOUT
PER IPC CALCULATOR
0.30 – 0.50 REF
REF
1.22 REF
1.4 MIN
0.09 – 0.20
(NOTE 3)
2.80 BSC
1.50 – 1.75
(NOTE 4)
1.00 MAX
PIN ONE
0.95 BSC
0.80 – 0.90
2.90 BSC
(NOTE 4)
0.30 – 0.45 TYP
5 PLCS (NOTE 3)
0.01 – 0.10
1.90 BSC
S5 TSOT-23 0302 REV B
26
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LT6202/LT6203/LT6204
REVISION HISTORY
REVDATEDESCRIPTIONPAGE NUMBER
C5/11Revised units to MΩ for Input Resistance Common Mode3
D12/11Corrected LT part number in the Description section
Added H-grade
Removed DD package junction temperature and storage temperature range in Absolute Maximum Ratings and
revised T
Revised V
value for S5 and DD packages and θJA for DD package
JMAX
conditions in the Electrical Characteristics table
OS
(Revision history begins at Rev C)
1
1-12
2
7, 11
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
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27
LT6202/LT6203/LT6204
TYPICAL APPLICATION
Low Noise Differential Amplifier with Gain Adjust and Common Mode Control
R1
402Ω
0dB
R2
6dB
0dB
6dB
200Ω
R3
100Ω
R4
402Ω
R5
200Ω
R6
100Ω
–
1/2 LT6203
+
–
V
IN
12dB
+
V
IN
12dB
C1
270pF
C2
R7, 402Ω
+
V
R8
402Ω
V
22pF
R9
402Ω
R
A
+
R
0.1µF
B
Low Noise Differential Amplifier
Frequency Response
C3
5pF
R10, 402Ω
–
1/2 LT6203
+
+
V
OUT
–
V
OUT
R
OUTPUT VCM =V
B
()
RA + R
B
LT6202/03/04 F07
+
G = 0dB
RELATIVE DIFFERENTIAL GAIN (1dB/DIV)
50k
FREQUENCY (Hz)
G = 6dB
G = 12dB
1M
5M
LT6202/03/04 F08
RELATED PARTS
PART NUMBERDESCRIPTIONCOMMENTS
LT1028Single, Ultralow Noise 50MHz Op Amp1.1nV/√Hz
LT1677Single, Low Noise Rail-to-Rail Amplifier3V Operation, 2.5mA, 4.5nV/√Hz, 60µV Max V
LT1722/LT1723/LT1724Single/Dual/Quad Low Noise Precision Op Amps70V/µs Slew Rate, 400µV Max VOS, 3.8nV/√Hz, 3.7mA
LT1800/LT1801/LT1802Single/Dual/Quad Low Power 80MHz Rail-to-Rail Op Amps8.5nV/√Hz, 2mA Max Supply
LT1806/LT1807Single/Dual, Low Noise 325MHz Rail-to-Rail Amplifiers2.5V Operation, 550µV Max V
, 3.5nV/√Hz
OS
LT6200Single Ultralow Noise Rail-to-Rail Amplifier0.95nV/√Hz, 165MHz Gain Bandwidth
LT 1211 REV D • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 2009
28
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507
●
www.linear.com
0S
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