ST TS941, TS942, TS944 User Manual

Output Rail-to-Rail Micropower Operational Amplifiers

n

Rail-to-rail output voltage swing

n

Microp ower consum p t io n (1 .2µA)

n

Single supply operation (2.5V to 10V)

n

CMOS inputs

n

Ultra low input bias current (1pA)

n

ESD protecti on (2kV)

n

Latch-up immunity (class A)

n

Available in SOT23-5 micropackage

TS941-TS942-TS944

Pin Connections (top view)

TS941ILT

Output

Non-inverting input

1

V

2

DD

3

V

5

CC

Inverting input

4

Description

The TS94x (single, dual & quad) series are
operational amplifiers characterized for 2.5V to
10V operation over -40° C to +85°C temperature
range.

They exhibit excellent cons um ption - 1.2µA, w h ile
featuring 10kHz gain bandwidth product, 1.5mA
output capability and output rail-to-rail operation -

2.85V typ @ 3V with RL=10kΩ.
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 ­1pA typ input bias current and constant supply
current over supply voltage enhance TS94x’s
performance near the end of the life battery
charge.

Applications

n

Battery-powered systems (alarm)

n

Portable communication systems (pag ers)

n

Smoke/gas/fire detectors

n

Instrumentation & sensoring

n

PH meter

TS941ID-TS941IDT

N.C.

N.C.

Inverting Input 1

Non-inverting Input 1

V

1

2

-

+

3

4

DD

8

7

6

5

V

CC

Output 2

N.C.

TS942IN-TS942ID-TS942IDT-TS942IPT

Output 1

Inverting Input 1

Non-inverting Input 1

V

1

-

2

+

3

45

DD

8

7

-

6

+

V

CC

Output 2

Inverting Input 2

Non-inverting Input 2

TS944IN-TS944ID-TS944IDT-TS944IPT

14

Output 1

Inverting Input 1

Non-inverting Input 1

Non-inverting Input 2

Inverting Input 2

Output 2

1

2

-

+

3

V

4

CC

5

+

-

6

7

13

-

+

12

11

10

+

-

Output 4

Inverting Input 4

Non-inverting Input 4

V

DD

Non-inverting Input 3

9

Inverting Input 3

8

Output 3

December 2004 Revision 2 1/18

TS941-TS942-TS944

Order Codes

Part Number

TS941ID/IDT/AID/AIDT/BID/BIDT

TS941ILT/AILT/BILT SOT23-5L Tape & Reel
TS942IN/AIN/BIN DIP Tube

TS942ID/IDT/AID/AIDT/BID/BIDT SO Tube or Tape & Reel
TS942IPT/AIPT/BIPT
TS944IN/AIN/BIN DIP Tube

TS944ID/IDT/AID/AIDT/BIDT/BIDT SO Tube or Tape & Reel
TS944IPT/AIPT/BIPT

Temperature

Range

-40°C, +85°C

Package Packaging Marking

SO Tube or Tape & Reel

TSSOP

(Thin Shrink Outline Package)

TSSOP

(Thin Shrink Outline Package)

Tape & Reel

Tape & Reel

K201
K202
K203

2/18

Absolute Maximum Ratings TS941-TS942-TS944

1 Absolute Maximum Ratings

Table 1: Key parameters and their absolute maximum rating s

Symbol Parameter Value Unit

VCC

T

R

Supply voltage

Vid

Differential Input Voltage

V

Input Voltage Range

in

Storage Temperature Range

std

Maximum Junction Temperature

T

j

Thermal Resistance Junction to Ambient

thja

SOT23-5
DIP8
DIP14
SO8
SO14
TSSOP8
TSSOP14

HBM: Human Body Model

ESD

MM: Machine Model
CDM: Charged Device Model TS941

TS942

Latch-up Immunity 200 mA
Lead Temperature (soldering, 10sec ) 250 °C

1) All v ol tages val u es, except dif ferent i a l vol t age are with respect to net w ork term i n al.

2) Dif ferential vol t ages are non-inverti ng input termi nal with respect to th e i nverting in put terminal .

3) The magnitude of input and out put voltage s m ust never exc eed VCC +0.3V.

4) Short-circuits can cause excessive heating and destructive dissipation.

5) Human body model, 100pF discharged thr ough a 1.5kΩ resistor into pin of device.

6) Machine model ESD, a 200pF cap is charged to the specified voltage, then discharged directly into the IC with no external series resistor
(inter nal resistor < 5

1

2

3

5

6

(TS941, TS942)

Ω), into pin to pin of device.

12 V

±12 V

Vdd-0.3 to Vcc+0.3 V

-65 to +150 °C
150 °C

4

250

85

°C/W

66
125
103
120
100

2kV

200 V

1.5 kV
1kV

Table 2: Ope rat in g C on di t io ns

Symbol Parameter Value Unit

VCC Supply Voltage 2.5 to 10 V
Vicm
T

oper

Common Mode Input Voltage Range V
Operating Free Air Temperature Range

-0.2 to VCC -1.3

DD

-40 to + 85 °C

V

3/18

TS941-TS942-TS944 Electrical Characteristics

2 Electrical Characteristics

Table 3: VCC = +2.5V, VDD = 0V, RL connected to V

CC/2

, T

= 25°C (unless otherwise specified)

amb

Symbol Parameter Min. Typ. Max. Unit

Input Offset Voltage

V

∆V

io

Input Offset Voltage Drift

io

I

Input Offset Current

io

I

Input Bias Current

ib

TS941/2/4
TS941/2/4A
TS941/2/4B

7

1

1)

1 100 pA
1 150 pA

10

5
2

µV/°C

CMR Common Mode Rejection Ratio 60 85 dB

SVR Supply Voltage Rejection Ratio 50 78 dB

Large Signal Voltage Gain

A

vd

V

= 2Vpp RL = 1MΩ

O

100

High Level Output Voltage
V

V

OH

= 100mV RL = 1MΩ

ID

RL = 10kΩ

2.45

2.3

2.49

2.4

Low Level Output Voltage
V

V

OL

= -100mV RL = 1MΩ

ID

RL = 10kΩ

1

100

5

200

Output Source Current
V

I

o

I

CC

GBP

SR

φm

= 100mV, VO = V

ID

DD

Output Sink Current

= -100mV, VO = V

V

ID

CC

Supply Current (per amplifier)

= 1, no load

A

VCL

Gain Bandwidth Product R
Slew Rate R
Phase Margin C

= 1MΩ, CL = 50pF

L

= 1MΩ, CL = 50pF

L

= 50pF

L

350
280

650
500

1.2 1.8
10 kHz

34.5 V/ms
65 Degrees

mV

dB

V

mV

µA

µA

1) Maximum values including unavoidable inaccurates of the industrial test.

4/18

Electrical Characteristics TS941-TS942-TS944

Table 4: VCC = +3V, VDD = 0V, RL connected to V

CC/2,Tamb

= 25°C (unless otherwise specified) 2)

Symbol Parameter Min. Typ. Max. Unit

Input Offset Voltage

V

∆V

io

TS941/2/4
TS941/2/4A
TS941/2/4B

Input Offset Voltage Drift 7 µV/°C

io

I

Input Offset Current

io

I

Input Bias Current

ib

1

1)

1 100 pA
1 150 pA

10

5
2

CMR Common Mode Rejection Ratio 60 85 dB

SVR Supply Voltage Rejection Ratio 50 85 dB

Large Signal Voltage Gain

A

vd

V

= 2VppRL = 1MΩ

O

100

High Level Output Voltage

OH

V

ID

RL = 10kΩ

2.9

2.8

2.99

2.85

V

= 100mV RL = 1MΩ

Low Level Output Voltage
V

V

OL

= -100mV RL = 1MΩ

ID

RL = 10kΩ

1

100

5

200

Output Source Current

V

I

o

I

CC

GBP

SR

φm

Output Sink Current

Supply Current (per amplifier)

Gain Bandwidth Product R
Slew Rate R
Phase Margin C

= 100mV, VO = V

ID

= -100mV, VO = V

V

ID

A

= 1, no load

VCL

= 1MΩ, CL = 50pF

L

= 1MΩ, CL = 50pF

L

= 50pF

L

DD

CC

680
650

1500
1300

1.2 1.8
10 kHz

34.5 V/ms
65 Degrees

mV

dB

V

mV

µA

µA

1) Maximum values including unavoidable inaccurates of the industrial test.

2. All electri cal values are guaranteed with correlation measurements at 2.5V and 5V

5/18

TS941-TS942-TS944 Electrical Characteristics

Table 5: V

= +5V, VDD = 0V, RL connected to V

CC

CC/2

, T

= 25°C (unless otherw ise speci fied)

amb

Symbol Parameter Min. Typ. Max. Unit

Input Offset Voltage

V

∆V

io

Input Offset Voltage Drift

io

I

Input Offset Current

io

I

Input Bias Current

ib

TS941/2/4
TS941/2/4A
TS941/2/4B

7

1

1)

1 100 pA
1 150 pA

10

5
2

µV/°C

CMR Common Mode Rejection Ratio 60 85 dB

SVR Supply Voltage Rejection Ratio 50 85 dB

Large Signal Voltage Gain

A

vd

V

= 2Vpp RL = 1MΩ

O

100

High Level Output Voltage
V

V

OH

= 100mV RL = 1MΩ

ID

RL = 10kΩ

4.9

4.8

4.99

4.85

Low Level Output Voltage

OL

V

ID

RL = 10kΩ

1

100

5

150

V

= -100mV RL = 1MΩ

Output Source Current

V

= 100mV, VO = V

I

o

I

CC

GBP

SR

φm

Output Sink Current

Supply Current (per amplifier)

Gain Bandwidth Product R
Slew Rate R
Phase Margin C

ID

V

= -100mV, VO = V

ID

= 1, no load

A

VCL

= 1MΩ, CL = 50pF

L

= 1MΩ, CL = 50pF

L

= 50pF

L

DD

CC

3

3.7

4.5
5

1.2 1.85

10 kHz

34.5 V/ms
65 Degrees

mV

dB

V

mV

mA

µA

1) Maximum values including unavoidable inaccurates of the industrial test.

6/18