TS971, TS972, TS974
Output rail-to-rail very low noise operational amplifier
Features
■ Rail-to-rail output voltage swing
±2.4 V at V
= ±2.5 V
CC
■ Very low noise level: 4 nV/√Hz
■ Ultra low distortion: 0.003%
■ High dynamic features: 12 MHz, 4 V/µs
■ Operating range: 2.7 to 10 V
■ ESD protection (2 kV)
■ Latch-up immunity (class A)
Applications
■ Portable devices (CD players, PDAs)
■ Portable communication (cell phones, pagers)
■ Instrumentation and sensoring
■ Professional audio circuits
Description
The TS97x family of operational amplifiers
operates with voltages as low as ±1.35 V and
features output rail-to-rail signal swing. The
TS97x are particularly well suited for portable and
battery-supplied equipment. Very low noise and
low distortion characteristics make them ideal for
audio pre-amplification.
The TS971 is available in a variety of packages to
suit all types of applications. For applications
where space-saving is critical, the SOT23
package (2.8 x 2.9 mm) or the DFN package
(3 x 3 mm) simplify the board design because
they can be placed everywhere.
Non-inverting input
TS971ID-TS971IDT (SO-8)
Inverting Input 1
Non-inverting Input 1
TS972ID-TS972IDT (SO-8)
Output 1
Inverting Input 1
Non-inverting Input 1
Output 1
Output 1
Inverting Input 1
Inverting Input 1
Non Inverting Input 1
Non Inverting Input 1
VDD
VDD
TS974ID-TS974IDT (SO-14)
Inverting Input 1
Non-inverting Input 1
Non-inverting Input 2
Inverting Input 2
TS971ILT (SOT23-5L)
Output
V
1
2
DD
3
1
N.C.
2
-
+
3
V
4
DD
V
5
CC
Inverting input
4
N.C.
8
7
6
5
V
CC
Output 2
N.C.
TS972IPT (TSSOP8)
1
-
2
+
3
V
45
DD
V
8
CC
Output 2
7
-
Inverting Input 2
6
+
Non-inverting Input 2
TS972IQT (DFN8)
1
1
2
2
3
3
45
45
8
8
VCC
VCC
7
7
Output 2
Output 2
Inverting Input 2
Inverting Input 2
6
6
Non Inverting Input 2
Non Inverting Input 2
TS974IPT (TSSOP14)
14
Output 1
Output 2
V
1
2
-
+
3
4
CC
5
+
-
6
7
13
-
+
12
11
10
+
-
9
8
Output 4
Inverting Input 4
Non-inverting Input 4
V
DD
Non-inverting Input 3
Inverting Input 3
Output 3
May 2010 Doc ID 6031 Rev 7 1/16
www.st.com
16
Absolute maximum ratings and operating conditions TS971, TS972, TS974
1 Absolute maximum ratings and operating conditions
Table 1. Absolute maximum ratings AMR
Symbol Parameter Value Unit
(3)
(1)
(6)
(2)
(5)
(7)
(4)
(4)
12 V
±1 V
V
DD
-0.3 to V
+0.3 V
CC
250
40
125
°C/W
105
120
100
81
5.2
40
°C/W
31
37
32
2kV
200 V
1.5 kV
V
CC
V
id
V
in
T
stg
T
R
thja
R
thjc
ESD
Supply voltage
Differential input voltage
Input voltage
Storage temperature range -65 to +150
Maximum junction temperature 150 °C
j
Thermal resistance junction to ambient
SOT23-5
DFN8
SO-8
SO-14
TSSOP8
TSSOP14
Thermal resistance junction to case
SOT23-5
DFN8
SO-8
SO-14
TSSOP8
TSSOP14
HBM: human body model
MM: machine model
CDM: charged device model
Lead temperature (soldering, 10sec) 260 °C
1. All voltage values, except differential voltage are with respect to network ground terminal.
2. Differential voltages are the non-inverting input terminal with respect to the inverting input terminal.
3. The magnitude of input and output voltages must never exceed VCC +0.3 V.
4. Short-circuits can cause excessive heating and destructive dissipation. Values are typical.
5. Human body model: a 100 pF capacitor is charged to the specified voltage, then discharged through a
1.5kΩ resistor between two pins of the device. This is done for all couples of connected pin combinations
while the other pins are floating.
6. Machine model: a 200 pF capacitor is charged to the specified voltage, then discharged directly between
two pins of the device with no external series resistor (internal resistor < 5 Ω). This is done for all couples of
connected pin combinations while the other pins are floating.
7. Charged device model: all pins and package are charged together to the specified voltage and then
discharged directly to ground through only one pin. This is done for all pins.
No value specified for CDM on SOT23-5 package.
2/16 Doc ID 6031 Rev 7
TS971, TS972, TS974 Absolute maximum ratings and operating conditions
Table 2. Operating conditions
Symbol Parameter Value Unit
V
V
T
CC
icm
oper
Supply voltage 2.7 to 10 V
Common mode input voltage range V
+1.15 to VCC -1.15 V
DD
Operating free air temperature range -40 to +125 °C
Doc ID 6031 Rev 7 3/16
Electrical characteristics TS971, TS972, TS974
2 Electrical characteristics
Table 3. V
= +2.5 V, V
CC
Symbol Parameter Conditions Min. Typ. Max. Unit
= -2.5 V, T
DD
= 25°C (unless otherwise specified)
amb
V
Input offset voltage
io
DV
V
Input offset voltage drift V
io
I
Input offset current V
io
I
Input bias current
ib
Common mode input voltage
icm
range
CMR Common mode rejection ratio V
SVR Supply voltage rejection ratio V
Large signal voltage gain RL = 2 kΩ 70 80 dB
A
vd
V
V
I
source
I
High level output voltage RL = 2 kΩ 22.4 V
OH
Low level output voltage RL = 2 kΩ -2.4 -2 V
OL
Output source current 1.5 mA
Output sink current 100 mA
sink
Supply current per amplifier Unity gain - no load 2 2.8 mA
I
CC
T
≤ T
min
amb
= 0 V, Vo = 0 V 5 µV/°C
icm
= 0 V, Vo = 0 V 10 150 nA
icm
= 0 V, Vo = 0 V
V
icm
T
≤ T
min
amb
= ±1.35 V 60 85 dB
icm
= ±2 V to ±3 V 60 70 dB
CC
GBP Gain bandwidth product f = 100 kHz, R
SR Slew rate A
∅m Phase margin at unit gain R
Gm Gain margin R
e
Equivalent input noise voltage f = 100 kHz 4 nV/√Hz
n
= 1, Vin = ±1 V 2.8 4 V/µs
V
= 2 kΩ, CL = 100 pF 60 Degrees
L
= 2 kΩ, CL = 100 pF 10 dB
L
THD Total harmonic distortion f = 1 kHz, A
15
≤ T
≤ T
max
max
200
200
7
750
1000
-1.35 1.35 V
= 2 kΩ, CL = 100 pF 8.5 12 MHz
L
= -1, RL = 10 kΩ 0.003 %
V
mV
nA
4/16 Doc ID 6031 Rev 7
TS971, TS972, TS974 Electrical characteristics
Figure 1. Input offset voltage distribution Figure 2. Voltage gain & phase vs. frequency
V
= 5 V
CC
Figure 3. Voltage gain & phase vs. frequency
V
= 2.7 V
CC
Figure 4. THS vs. V
out, VCC
= 5 V
Figure 5. THD vs. Vout, VCC = 2.7 V Figure 6. THD vs. frequency
Doc ID 6031 Rev 7 5/16
Electrical characteristics TS971, TS972, TS974
Figure 7. Noise voltage vs. frequency Figure 8. Gain bandwidth product vs. I
Figure 9. Phase margin vs. I
out
Figure 10. Phase margin vs. VCC
R
= 10 k, CL = 30 pF
L
out
Figure 11. Phase margin vs. V
CC
Figure 12. Gain margin vs. V
CL = 30, 130 and 250 pF
6/16 Doc ID 6031 Rev 7
CC
TS971, TS972, TS974 Package information
3 Package information
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK
®
packages, depending on their level of environmental compliance. ECOPACK®
®
is an ST trademark.
Doc ID 6031 Rev 7 7/16
Package information TS971, TS972, TS974
3.1 SOT23-5 package information
Figure 13. SOT23-5 package mechanical drawing
Table 4. SOT23-5 package mechanical data
Dimensions
Ref.
Min. Typ. Max. Min. Typ. Max.
A 0.90 1.20 1.45 0.035 0.047 0.057
A1 0.15 0.006
A2 0.90 1.05 1.30 0.035 0.041 0.051
B 0.35 0.40 0.50 0.013 0.015 0.019
C 0.09 0.15 0.20 0.003 0.006 0.008
D 2.80 2.90 3.00 0.110 0.114 0.118
D1 1.90 0.075
e 0.95 0.037
E 2.60 2.80 3.00 0.102 0.110 0.118
F 1.50 1.60 1.75 0.059 0.063 0.069
L 0.10 0.35 0.60 0.004 0.013 0.023
K 0 degrees 10 degrees
Millimeters Inches
8/16 Doc ID 6031 Rev 7
TS971, TS972, TS974 Package information
3.2 SO-8 package information
Figure 14. SO-8 package mechanical drawing
Table 5. SO-8 package mechanical data
Dimensions
Ref.
Min. Typ. Max. Min. Typ. Max.
A1.750.069
A1 0.10 0.25 0.004 0.010
A2 1.25 0.049
b 0.28 0.48 0.011 0.019
c 0.17 0.23 0.007 0.010
D 4.80 4.90 5.00 0.189 0.193 0.197
E 5.80 6.00 6.20 0.228 0.236 0.244
E1 3.80 3.90 4.00 0.150 0.154 0.157
e 1.27 0.050
h 0.25 0.50 0.010 0.020
L 0.40 1.27 0.016 0.050
L1 1.04 0.040
k0° 8°1° 8°
ccc 0.10 0.004
Millimeters Inches
Doc ID 6031 Rev 7 9/16
Package information TS971, TS972, TS974
3.3 TSSOP8 package information
Figure 15. TSSOP8 package mechanical drawing
Table 6. TSSOP8 package mechanical data
Dimensions
Ref.
Min. Typ. Max. Min. Typ. Max.
A1.200.047
A1 0.05 0.15 0.002 0.006
A2 0.80 1.00 1.05 0.031 0.039 0.041
b 0.19 0.30 0.007 0.012
c 0.09 0.20 0.004 0.008
D 2.90 3.00 3.10 0.114 0.118 0.122
E 6.20 6.40 6.60 0.244 0.252 0.260
E1 4.30 4.40 4.50 0.169 0.173 0.177
e 0.65 0.0256
k0° 8°0° 8°
L 0.45 0.60 0.75 0.018 0.024 0.030
L1 1.00 0.039
aaa 0.10 0.004
Millimeters Inches
10/16 Doc ID 6031 Rev 7
TS971, TS972, TS974 Package information
3.4 SO-14 package information
Figure 16. SO-14 package mechanical drawing
Table 7. SO-14 package mechanical data
Dimensions
Millimeters Inches
Ref.
Min. Typ. Max. Min. Typ. Max.
A 1.35 1.75 0.05 0.068
A1 0.10 0.25 0.004 0.009
A2 1.10 1.65 0.04 0.06
B 0.33 0.51 0.01 0.02
C 0.19 0.25 0.007 0.009
D 8.55 8.75 0.33 0.34
E 3.80 4.0 0.15 0.15
e1.27 0.05
H 5.80 6.20 0.22 0.24
h 0.25 0.50 0.009 0.02
L 0.40 1.27 0.015 0.05
k 8° (max.)
ddd 0.10 0.004
Doc ID 6031 Rev 7 11/16
Package information TS971, TS972, TS974
3.5 TSSOP14 package information
Figure 17. TSSOP14 package mechanical drawing
Table 8. TSSOP14 package mechanical data
Dimensions
Ref.
Min. Typ. Max. Min. Typ. Max.
A1.200.047
A1 0.05 0.15 0.002 0.004 0.006
A2 0.80 1.00 1.05 0.031 0.039 0.041
b 0.19 0.30 0.007 0.012
c 0.09 0.20 0.004 0.0089
D 4.90 5.00 5.10 0.193 0.197 0.201
E 6.20 6.40 6.60 0.244 0.252 0.260
E1 4.30 4.40 4.50 0.169 0.173 0.176
e 0.65 0.0256
L 0.45 0.60 0.75 0.018 0.024 0.030
L1 1.00 0.039
k0° 8°0° 8°
aaa 0.10 0.004
Millimeters Inches
12/16 Doc ID 6031 Rev 7
TS971, TS972, TS974 Package information
3.6 DFN8 exposed pad package information
Figure 18. DFN8 3 x 3 exposed pad package mechanical drawing (pitch 0.5 mm)
Table 9. DFN8 3 x 3 mm exposed pad package mechanical data (pitch 0.5 mm)
Dimensions
Ref.
Min. Typ. Max. Min. Typ. Max.
A 0.80 0.90 1.00 0.031 0.035 0.039
A1 0.02 0.05 0.0008 0.0019
A2 0.55 0.65 0.80 0.021 0.025 0.031
A3 0.20 0.008
b 0.18 0.25 0.30 0.007 0.010 0.012
D 2.85 3.00 3.15 0.112 0.118 0.124
D2 2.20 2.70 0.087 0.106
E 2.85 3.00 3.15 0.112 0.118 0.124
E2 1.40 1.75 0.055 0.069
e 0.50 0.020
L 0.30 0.40 0.50 0.012 0.016 0.020
ddd 0.08 0.003
Millimeters Inches
Doc ID 6031 Rev 7 13/16
Ordering information TS971, TS972, TS974
4 Ordering information
Table 10. Order codes
Order code
TS971ID
TS971IDT
Temperature
range
Package Packing Marking
SO-8
TS971ILT SOT23-5L
TS971IYD
TS971IYDT
TS971IYLT
TS972ID
TS972IDT
TS972IPT
TS972IQT
TS972IYD
TS972IYDT
TS972IYPT
TS974ID
TS974IDT
TS974IPT
TS974IYD
TS974IYDT
(1)
(1)
(1)
(2)
(1)
(1)
(2)
(1)
-40°C, +125°C
SO-8
(Automotive grade level)
SOT23-5L
(Automotive grade level)
SO-8
TSSOP8
(Thin shrink outline package)
DFN8
(Dual micro lead frame package)
SO-8
(Automotive grade level)
TSSOP8
(Automotive grade level)
SO-14
TSSOP14
(Thin shrink outline package)
SO-14
(Automotive grade level)
Tube or
Tape & reel
971I
K120
Tape & reel
971IY
K121
Tube or
Tape & reel
972I
Tap e & R ee l
Tube or
Tape & reel
972IY
Tape & reel 972IY
Tube or
Tape & reel
974I
Tape & reel
974IY
TS974IYPT
1. Qualified and characterized according to AEC Q100 and Q003 or equivalent, advanced screening according to AEC Q001
& Q 002 or equivalent.
2. Qualification and characterization according to AEC Q100 and Q003 or equivalent, advanced screening according to AEC
Q001 & Q 002 or equivalent are on-going.
(2)
TSSOP14
(Automotive grade level)
974IY
14/16 Doc ID 6031 Rev 7
TS971, TS972, TS974 Revision history
5 Revision history
Table 11. Document revision history
Date Revision Changes
15-Nov- 2002 1 First release.
9-May- 2005 2 Modifications on AMR table (explanation of Vid and Vi limits)
31-Aug-2005 3 PPAP references inserted in the datasheet, see Table 1 on page 2.
Thermal resistance junction to case data added in Table 1. on page 2
9-Dec-2005 4
Missing PPAP references inserted in the datasheet, see Table 10:
Order codes.
3-Oct-2007 5
20-Dec-2007 6
06-May-2010 7
Added R
thja
and R
values for DIP8 and DIP14 packages in
thjc
Ta bl e 1.
ESD footnotes updated in Table 1: Absolute maximum ratings AMR.
Description section updated on cover page.
Markings for automotive grade parts corrected in Table 10: Order
codes.
Reformatted package information in Section 3: Package information.
Footnotes for automotive grade parts corrected in Table 10: Order
codes.
Updated package information (drawings and data) in Chapter 3.
Removed DIP package order codes from Chapter 4: Ordering
information.
Doc ID 6031 Rev 7 15/16
TS971, TS972, TS974
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