ST TS922 User Manual

TS922

Rail-to-Rail High Output Current Dual Operational Amplifier

■ Rail-to-rail input and output

■ Low noise: 9nV/

√Hz

■ Low distortion

■ High output current: 80mA

(able to drive 32Ω loads)

■ High-speed: 4MHz, 1V/µs

■ Operating from 2.7V to 12V

■ Low input offset voltage: 900µV max

(TS922A)

■ ESD Internal protection: 2kV

■ Latch-up immunity

■ Macromodel included in this specification

■ Dual version available in flip-chip package

Description

The TS922 is a rail-to-rail dual BiCMOS operational amplifier optimized and fully specified for 3V and 5V operation.

The device’s high output current allows low-load impedances to be driven.

Very low noise, low distortion, low offset and a high output current capability make this device an excellent choice for high quality, low voltage or battery operated audio systems.

The device is stable for capacitive loads up to 500pF.

J

TS922IJ

(Flip-chip)

N

DIP-8

(Plastic Package)

D

SO-8

(Plastic Micropackage)

P

TSSOP8

(Thin Shrink Small Outline Package)

Applications

■ Headphone amplifier

■ Piezoelectric speaker driver

■ Sound cards, multimedia systems

■ Line driver, actuator driver

■ Servo amplifier

■ Mobile phone and portable equipment

■ Instrumentation with low noise as key

factor

Order Codes

Part Number Temperature Range Package Packaging

TS922IN/AIN TS922ID/IDT/AID/AIDT SO Tube or Tape & Reel

TS922IPT/TS922AIPT

TS922IJT Flip-Chip Tape & Reel

May 2005 Revision 3 1/16

-40°C, +125°C (Thin Shrink Outline Package)

DIP Tube

TSSOP

Tape & Reel

TS922 Pin Diagrams

1 Pin Diagrams

Figure 1: Pin connections (top view)

Output 1

Inverting Input 1

Non-inverting Input 1

1

2

-

+

3

V

45

CC

Figure 2: Pin-out for flip-chip package (top view)

OUT2 -IN2 +IN2

-

+

VCC+

+

-

V

8

Output 2

7

-

Inverting Input 2

6

+

Non-inverting Input 2

CC

+

GND

+IN1-IN1OUT1

2/16

Absolute Maximum Ratings TS922

2 Absolute Maximum Ratings

Table 1: Key parameters and their absolute maximum ratings

Symbol Parameter Value Unit

V

T

Supply voltage

CC

V

Differential Input Voltage

id

V

Input Voltage

in

Storage Temperature

stg

Thermal Resistance Junction to Ambient SO8

R

TSSOP8 120

thja

DIP8 85 Flip Chip 90

T

Maximum Junction Temperature

j

HBM: Human Body Model

ESD

MM: Machine Model CDM: Charged Device Model 1.5 kV Output Short Circuit Duration

Latch-up Immunity 200 mA Soldering Temperature (10sec), leaded version 250 °C Soldering Temperature (10sec), unleaded version 260 °C

1) All voltages 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 Vid > ±1V, the maximum input current must not exceed ±1mA. In this case (Vid > ±1V) an input serie resistor must be added to limit input current.

3) Do not exceed 14V.

4) Human body model, 100pF discharged through a 1.5kΩ resistor into pin of device.

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

6) There is no short-circuit protection inside the device: short-circuits from the output to V

output current is approximately 80mA, independent of the magnitude of V circuits on all amplifiers.

1

2

3

4

5

Ω), into pin to pin of device.

14 V

±1 V

VDD-0.3 to VCC+0.3

-65 to +150 °C

125

150 °C

2kV

100 V

see note

can cause excessive heating. The maximum

. Destructive dissipation can result from simultaneous short-

cc

6

V

°C/W

Table 2: Operating conditions

Symbol Parameter Value Unit

V

T

Supply voltage

CC

Common Mode Input Voltage Range

icm

Operating Free Air Temperature Range

oper

2.7 to 12 V

-0.2 to VCC +0.2

V

DD

-40 to +125 °C

V

3/16

TS922 Electrical Characteristics

3 Electrical Characteristics

Table 3: VCC = +3V, VDD = 0V, V

= VCC/2, T

icm

= 25°C, RL connected to Vcc/2 (unless otherwise

amb

specified)

Symbol Parameter Min. Typ. Max. Unit

Input Offset Voltage TS922 Input Offset voltage TS922A Input Offset Voltage TS922IJ (Flip Chip)

V

io

T

≤ T

TS922

max.

≤ T

TS922A

max.

≤ T

TS922IJ (Flip Chip)

max.

2

130nA

15 100 nA

DV

min.

≤ T ≤ T

amb

T T

Input Offset Voltage Drift

io

Input Offset Current

I

io

Vout = Vcc/2

Input Bias Current

I

ib

Vout = Vcc/2

High Level Output Voltage R

= 10k

V

OH

L

R

= 600Ω

L

RL = 32Ω

2.90

2.87

2.63

Low Level Output Voltage R

= 10k

V

OL

A

I

cc

GBP

L

R

= 600Ω

L

RL = 32Ω

Large Signal Voltage Gain (V R

= 10k

L

vd

R

= 600Ω

L

RL = 32Ω

Total Supply Current no load, V

out

= V

Gain Bandwidth Product (R

= 600Ω)

L

cc/2

= 2Vpk-pk)

out

180

200

35 16

23mA

4MHz

CMR Common Mode Rejection Ratio 60 80 dB

SVR

Supply Voltage Rejection Ratio

= 2.7 to 3.3V

V

cc

I

Output Short Circuit Current

o

60 85

50 80 mA

SR Slew Rate 0.7 1.3 V/

Phase Margin at Unit Gain

φm

G

m

e

n

THD

C

s

= 600Ω, CL =100pF

R

L

Gain Margin R

= 600Ω, CL =100pF

L

Equivalent Input Noise Voltage f = 1kHz

Total Harmonic Distortion

= 2Vpk-pk, F = 1kHz, Av = 1, RL =600Ω

V

out

Channel Separation

68 Degrees

12 dB

9

0.005 %

120 dB

3

0.9

1.5 5

1.8

2.5

µV/°C

50

100

mV

V

mV

V/mV

dB

µs

nV

-----------Hz

4/16

Electrical Characteristics TS922

Table 4: Electrical characteristics VCC = 5V, V

to V

/2 (unless otherwise specified)

cc

= 0V, V

DD

= Vcc/2, T

icm

= 25°C, RL connected

amb

Symbol Parameter Min. Typ. Max. Unit

V

DV

V

Input Offset Voltage TS922 Input Offset voltage TS922A Input Offset Voltage TS922IJ (Flip Chip)

io

T

≤ T

min.

amb

max.

TS922 TS922A TS922IJ (Flip Chip)

Input Offset Voltage TS922IJ (flip chip)

io

T

≤ T

min.

amb

Input Offset Voltage Drift

io

Input Offset Current

I

io

Vout = Vcc/2

Input Bias Current

I

ib

Vout = Vcc/2

TS922IJ

max.

High Level Output Voltage R

= 10k

OH

L

R

= 600Ω

L

RL = 32Ω

2

130nA

15 100 nA

4.90

4.85

4.4

3

0.9

1.5 5

1.8

2.5

1.5

2.5

µV/°C

Low Level Output Voltage

V

OL

A

vd

I

cc

GBP

= 10k

L

R

= 600Ω

L

RL = 32Ω

Large Signal Voltage Gain (V RL= 10k R

= 600Ω

L

RL = 32Ω

Total Supply Current no load, V

out

= V

cc/2

Gain Bandwidth Product (R

= 600Ω)

L

= 2Vpk-pk)

out

300

200

35 16

23mA

4MHz

50

120

R

CMR Common Mode Rejection Ratio 60 80 dB

SVR

Supply Voltage Rejection Ratio

= 4.5 to 5.5V

V

cc

I

Output Short Circuit Current

o

60 85 dB

50 80 mA

SR Slew Rate 0.7 1.3 V/

φm

G

THD

Phase Margin at Unit Gain

= 600Ω, CL =100pF

R

L

Gain Margin

m

R

= 600Ω, CL =100pF

L

Equivalent Input Noise Voltage

e

n

f = 1kHz

Total Harmonic Distortion V

= 2Vpk-pk, F = 1kHz, Av = 1, RL =600Ω

out

C

Channel Separation

s

68 Degrees

12 dB

9

0.005 %

120 dB

mV

V

mV

V/mV

µs

nV

-----------Hz

5/16