TS94x, TS94xA, TS94xB
Output rail-to-rail micropower operational amplifiers
Features
■Rail-to-rail output voltage swing
■Micropower consumption (1.2 µA)
■Single supply operation (2.5 V to 10 V)
■CMOS inputs
■Ultra low input bias current (1 pA)
■ESD protection (2 kV)
■Latch-up immunity (class A)
■Available in SOT23-5 micropackage
Applications
■Battery-powered systems (alarm)
■Portable communication systems (pagers)
■Smoke/gas/fire detectors
■Instrumentation and sensoring
■PH meter
Description
The TS94x (single, dual and quad) series are operational amplifiers characterized for 2.5 V to 10 V operation over a -40° C to +85° C temperature range.
They exhibit excellent consumption -1.2 µA, while featuring 10 kHz gain bandwidth product, 1.5 mA output capability and output rail-to-rail operation - 2.85 V typical at 3 V with RL=10 kΩ.
The TS94x op-amps are ideal for battery-powered systems, where very low supply current and output rail-to-rail are required. Their very low
- 1 pA typical input bias current and constant supply current over supply voltage enhance the devices’ performance near the end of the battery charge or battery life.
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TS941ILT |
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TS941ID-TS941IDT |
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TS942ID-TS942IDT-TS942IPT |
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TS944ID-TS944IDT-TS944IPT |
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Table 1. |
Device summary |
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Reference |
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Selection on offset voltage |
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TS94x |
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TS941, TS942, TS944 |
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TS94xA |
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TS941A, TS942A, TS944A |
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TS94xB |
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TS941B, TS942B, TS944B |
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October 2009 |
Doc ID 6972 Rev 6 |
1/18 |
www.st.com
Absolute maximum ratings and operating conditions |
TS94x, TS94xA, TS94xB |
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Table 2. |
Absolute maximum ratings |
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Symbol |
Parameter |
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Value |
Unit |
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VCC |
Supply voltage (1) |
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12 |
V |
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Vid |
Differential input voltage (2) |
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± VCC |
V |
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V |
in |
Input voltage range (3) |
V |
-0.3 to V +0.3 |
V |
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DD |
CC |
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Tstg |
Storage temperature range |
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-65 to +150 |
°C |
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Tj |
Maximum junction temperature |
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150 |
°C |
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Thermal resistance junction to ambient (4) |
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SOT23-5 |
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250 |
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Rthja |
SO-8 |
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125 |
°C/W |
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SO-14 |
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103 |
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TSSOP8 |
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120 |
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TSSOP14 |
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100 |
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Thermal resistance junction to case (4) |
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SOT23-5 |
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81 |
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Rthjc |
SO-8 |
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40 |
°C/W |
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SO-14 |
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31 |
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TSSOP8 |
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37 |
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TSSOP14 |
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32 |
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HBM: human body model (5) |
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2 |
kV |
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MM: machine model (6) (TS941, TS942) |
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200 |
V |
ESD |
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CDM: charged device model (7) |
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TS941 - TS944IDT |
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1.5 |
kV |
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TS942 - TS944IPT |
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1 |
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Latch-up immunity |
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200 |
mA |
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Lead temperature (soldering, 10sec) |
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250 |
°C |
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1.All voltage values, except differential voltage are with respect to network 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. Rth are typical values.
5.Human body model: a 100 pF capacitor is charged to the specified voltage, then discharged through a 1.5 kΩ 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 the package are charged together to the specified voltage and then discharged directly to the ground through only one pin. This is done for all pins.
2/18 |
Doc ID 6972 Rev 6 |
TS94x, TS94xA, TS94xB |
Absolute maximum ratings and operating conditions |
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Table 3. |
Operating conditions |
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Symbol |
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Parameter |
Value |
Unit |
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VCC |
Supply voltage |
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2.5 to 10 |
V |
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Vicm |
Common mode input voltage range |
VDD -0.2 to VCC -1.3 |
V |
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Toper |
Operating free air temperature range |
-40 to + 85 |
°C |
Doc ID 6972 Rev 6 |
3/18 |
Electrical characteristics |
TS94x, TS94xA, TS94xB |
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Table 4. |
VCC = +2.5 V, VDD = 0 V, RL connected to VCC/2, Tamb = 25° C |
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(unless otherwise specified) |
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Symbol |
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Parameter |
Min. |
Typ. |
Max. |
Unit |
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Input offset voltage |
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Vio |
TS941/2/4 |
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10 |
mV |
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TS941/2/4A |
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5 |
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TS941/2/4B |
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2 |
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Vio |
Input offset voltage drift |
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7 |
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µV/°C |
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I |
Input offset current (1) |
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1 |
100 |
pA |
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io |
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I |
Input bias current (1) |
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1 |
150 |
pA |
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ib |
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CMR |
Common mode rejection ratio |
60 |
85 |
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dB |
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SVR |
Supply voltage rejection ratio |
50 |
78 |
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dB |
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Avd |
Large signal voltage gain |
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100 |
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dB |
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VO = 2 Vpp, RL = 1 MΩ |
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High level output voltage |
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VOH |
V |
ID |
= 100 mV, R |
= 1 MΩ |
2.45 |
2.49 |
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V |
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L |
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RL = 10 kΩ |
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2.3 |
2.4 |
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Low level output voltage |
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VOL |
VID = -100 mV, RL = 1 MΩ |
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1 |
5 |
mV |
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RL = 10 kΩ |
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100 |
200 |
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Output source current |
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Io |
VID = 100 mV, VO = VDD |
350 |
650 |
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µA |
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Output sink current |
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VID = -100 mV, VO = VCC |
280 |
500 |
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ICC |
Supply current (per amplifier), AVCL = 1, no load |
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1.2 |
1.8 |
µA |
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GBP |
Gain bandwidth product, RL = 1 MΩ, CL = 50 pF |
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10 |
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kHz |
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SR |
Slew rate, RL = 1 MΩ, CL = 50 pF |
3 |
4.5 |
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V/ms |
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φm |
Phase margin, CL = 50 pF |
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65 |
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Degrees |
1. Maximum values include unavoidable inaccuracies of the industrial tests.
4/18 |
Doc ID 6972 Rev 6 |
TS94x, TS94xA, TS94xB |
Electrical characteristics |
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Table 5. |
VCC = +3 V, VDD = 0 V, RL connected to VCC/2,Tamb = 25° C |
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(unless otherwise specified) (1) |
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Symbol |
Parameter |
Min. |
Typ. |
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Max. |
Unit |
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Input offset voltage |
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Vio |
TS941/2/4 |
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10 |
mV |
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TS941/2/4A |
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5 |
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TS941/2/4B |
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2 |
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Vio |
Input offset voltage drift |
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7 |
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µV/°C |
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I |
Input offset current (2) |
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1 |
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100 |
pA |
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io |
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I |
Input bias current (2) |
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1 |
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150 |
pA |
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ib |
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CMR |
Common mode rejection ratio |
60 |
85 |
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dB |
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SVR |
Supply voltage rejection ratio |
50 |
85 |
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dB |
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Avd |
Large signal voltage gain |
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100 |
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dB |
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VO = 2 Vpp,RL = 1 MΩ |
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High level output voltage |
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VOH |
VID = 100 mV, RL = 1 MΩ |
2.9 |
2.99 |
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V |
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RL = 10 kΩ |
2.8 |
2.85 |
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Low level output voltage |
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VOL |
VID = -100 mV, RL = 1 MΩ |
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1 |
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5 |
mV |
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RL = 10 kΩ |
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100 |
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200 |
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Output source current |
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Io |
VID = 100 mV, VO = VDD |
680 |
1500 |
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µA |
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Output sink current |
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VID = -100 mV, VO = VCC |
650 |
1300 |
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ICC |
Supply current (per amplifier), AVCL = 1, no load |
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1.2 |
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1.8 |
µA |
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GBP |
Gain bandwidth product, RL = 1 MΩ, CL = 50 pF |
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10 |
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kHz |
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SR |
Slew rate, RL = 1 MΩ, CL = 50 pF |
3 |
4.5 |
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V/ms |
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φm |
Phase margin, CL = 50 pF |
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65 |
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Degrees |
1.All electrical values are guaranteed with correlation measurements at 2.5 V and 5 V.
2.Maximum values include unavoidable inaccuracies of the industrial tests.
Doc ID 6972 Rev 6 |
5/18 |
Electrical characteristics |
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TS94x, TS94xA, TS94xB |
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Table 6. |
VCC = +5 V, VDD = 0 V, RL connected to VCC/2, Tamb = 25° C |
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(unless otherwise specified) |
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Symbol |
Parameter |
Min. |
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Typ. |
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Max. |
Unit |
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Input offset voltage |
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Vio |
TS941/2/4 |
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10 |
mV |
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TS941/2/4A |
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5 |
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TS941/2/4B |
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2 |
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Vio |
Input offset voltage drift |
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7 |
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µV/°C |
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I |
Input offset current (1) |
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1 |
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100 |
pA |
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io |
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I |
Input bias current (1) |
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1 |
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150 |
pA |
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ib |
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CMR |
Common mode rejection ratio |
60 |
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85 |
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dB |
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SVR |
Supply voltage rejection ratio |
50 |
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85 |
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dB |
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Avd |
Large signal voltage gain |
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100 |
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dB |
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VO = 2 Vpp, RL = 1 MΩ |
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High level output voltage |
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VOH |
VID = 100 mV, RL = 1 MΩ |
4.9 |
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4.99 |
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V |
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RL = 10 kΩ |
4.8 |
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4.85 |
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Low level output voltage |
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VOL |
VID = -100 mV, RL = 1 MΩ |
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1 |
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5 |
mV |
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RL = 10 kΩ |
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100 |
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150 |
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Output source current |
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Io |
VID = 100 mV, VO = VDD |
3 |
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4.5 |
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mA |
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Output sink current |
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VID = -100 mV, VO = VCC |
3.7 |
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5 |
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ICC |
Supply current (per amplifier), AVCL = 1, no load |
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1.2 |
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1.85 |
µA |
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GBP |
Gain bandwidth product, RL = 1 MΩ, CL = 50 pF |
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10 |
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kHz |
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SR |
Slew rate, RL = 1 MΩ, CL = 50 pF |
3 |
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4.5 |
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V/ms |
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φm |
Phase margin, CL = 50 pF |
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65 |
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Degrees |
1. Maximum values include unavoidable inaccuracies of the industrial tests.
6/18 |
Doc ID 6972 Rev 6 |