ST TS951, TS952, TS954 User Manual

TS951, TS952, TS954

Input/output rail-to-rail low power operational amplifiers

Features

■ Rail-to-rail input common-mode voltage range

■ Rail-to-rail output voltage swing

■ Operating from 2.7 V to 12 V

■ High-speed (3 MHz, 1 V/µs)

■ Low consumption (0.9 mA at 3 V)

■ Supply voltage rejection ratio: 80 dB

■ Latch-up immunity

■ Available in SOT23-5 micropackage

Applications

■ Set-top boxes

■ Laptop/notebook computers

■ Transformer/line drivers

■ Personal entertainment (CD players)

■ Portable communications (cell phones,

pagers)

■ Instrumentation and sensoring

■ Digital-to-analog converter buffers

■ Portable headphone speaker drivers

TS951ILT

TS951ID

TS952IN-TS952ID-TS952IPT

Description

The TS951, TS952 and TS954 family of devices
are rail-to-rail BiCMOS operational amplifiers
optimized and fully specified for 3 V and 5 V
operation.

The TS951 is housed in the space-saving 5-pin
SOT23 package that makes it well-suited for
battery-powered systems. This micropackage
simplifies the PC board design because of its
ability to be placed in tight spaces (outside
dimensions are: 2.8 mm x 2.9 mm).

February 2011 Doc ID 5561 Rev 8 1/18

TS954IN-TS954ID-TS954IPT

www.st.com

18

Absolute maximum ratings and operating conditions TS951, TS952, TS954

1 Absolute maximum ratings and operating conditions

Table 1. Absolute maximum ratings

Symbol Parameter Value Unit

(3)

(1)

(6)

(2)

(5)

14 V

±1 V

VDD-0.3 to VCC+0.3 V

(4)

250
125
103

°C/W

120
100

(4)

81
40
31

°C/W

37
32

1
2

kV

3

100 V

(7)

1.5

1.5

kV

1

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
SO-8
SO-14
TSSOP8
TSSOP14

Thermal resistance junction to case

SOT23-5
SO-8
SO-14
TSSOP8
TSSOP14

HBM: human body model

TS951
TS952
TS954

MM: machine model

CDM: charged device model

TS951
TS952
TS954

Latch-up immunity 200 mA

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.
If V

> ±1 V, the maximum input current must not exceed ±1 mA. In this case (Vid > ±1 V), an input series

id

resistor must be added to limit input current.

3. Do not exceed 14 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 5561 Rev 8

TS951, TS952, TS954 Absolute maximum ratings and operating conditions

Table 2. Operating conditions

Symbol Parameter Value Unit

V

T

V

CC

icm

oper

Supply voltage 2.7 to 12 V

Common mode input voltage range VDD -0.2 to VCC +0.2 V

Operating free air temperature range -40 to +125 °C

Doc ID 5561 Rev 8 3/18

Electrical characteristics TS951, TS952, TS954

2 Electrical characteristics

Table 3. VCC = +3 V, V

(unless otherwise specified)

Symbol Parameter Min. Typ. Max. Unit

= 0 V , RL connected to VCC/2, T

DD

amb

= 25° C

V

DV

Input offset voltage

io

io

I

io

I

ib

≤ T

T

min

amb

≤ T

max

Input offset voltage drift 2 µV/°C

Input offset current

≤ T

T

min

amb

≤ T

max

Input bias current
V

= VCC/2

icm

≤ T

T

min

amb

≤ T

max

130

35 100

6
8

80

200

mV

nA

nA

CMR Common mode rejection ratio 50 80 dB

SVR

V

V

GBP

Supply voltage rejection ratio
V

= 2.7 V to 3.3 V 60 80

CC

Large signal voltage gain

A

vd

Vo = 2 V

High level output voltage

OH

RL = 600 Ω

, RL = 600 Ω

pk-pk

2.8 2.9 V

Low level output voltage

OL

RL = 600 Ω

I

Output short-circuit current 10 mA

sc

Supply current (per amplifier)

I

CC

No load, V

= VCC/2

icm

Gain bandwidth product
R

= 2 kΩ

L

80 dB

80 250 mV

0.9 1.3 mA

3MHz

dB

SR Slew rate 1 V/µs

∅m

Gm

THD

Phase margin at unit gain
R

= 600 Ω, CL =100 pF

L

Gain margin
R

= 600 Ω, CL =100 pF

L

Equivalent input noise voltage

e

n

f = 1 kHz

Total harmonic distortion
V

= 4 V

out

pk-pk

, F = 10 kHz, AV = 2, RL =10 kΩ

60 Degrees

10 dB

nV

25

-----------­Hz

0.01 %

4/18 Doc ID 5561 Rev 8

TS951, TS952, TS954 Electrical characteristics

Table 4. VCC = +5 V, VDD = 0 V, RL connected to VCC/2, T

amb

= 25° C

(unless otherwise specified)

Symbol Parameter Min. Typ. Max. Unit

V

DV

Input offset voltage

io

T

≤ T

amb

≤ T

max

min

Input offset voltage drift 2 µV/°C

io

6
8

mV

Input offset current

I

io

V

icm

T

min

= VCC/2
≤ T

≤ T

amb

max

130

80

nA

Input bias current

I

ib

V

icm

T

min

= VCC/2
≤ T

≤ T

amb

max

35 100

200

nA

CMR Common mode rejection ratio 50 80 dB

SVR

A

V

V

I

GBP

Supply voltage rejection ratio
VCC = 2.7 V to 3.3 V

Large signal voltage gain

vd

Vo = 2 V

, RL = 600 Ω

pk-pk

High level output voltage

OH

RL = 600 Ω

Low level output voltage

OL

RL = 600 Ω

I

Output short-circuit current 10 mA

sc

Supply current (per amplifier)

CC

No load, V

= VCC/2

icm

Gain bandwidth product
R

= 2 kΩ

L

60 80 dB

86 dB

4.7 4.8 V

80 300 mV

0.95 1.4 mA

3MHz

SR Slew rate 1 V/μs

∅m

Gm

THD

Phase margin at unit gain
R

= 600 Ω, CL =100 pF

L

Gain margin
R

= 600 Ω, CL =100 pF

L

Equivalent input noise voltage

e

n

f = 1 kHz

Total harmonic distortion
V

= 4 V

out

pk-pk

, F = 10 kHz, AV = 2, RL =10 kΩ

60 Degrees

10 dB

nV

25

------------

0.01 %

Hz

Doc ID 5561 Rev 8 5/18

Electrical characteristics TS951, TS952, TS954

Figure 1. Supply current vs. supply voltage Figure 2. Output short circuit current vs.

output voltage

Figure 3. Voltage gain and phase vs.

Figure 4. Supply current vs. temperature

frequency

Figure 5. Output short circuit current vs.

Figure 6. Slew rate vs. temperature

temperature

6/18 Doc ID 5561 Rev 8