STMicroelectronics TS925 Technical data

Rail-to-Rail High Output Current Quad Operational Amplifiers

With Standby Mode and Adjustable Phantom Ground

■ Rail-to-rail input and output

■ Low noise: 9nV/√Hz

■ Low distortion

■ High output current: 80mA (able to drive 32Ω

loads)

■ High-speed: 4MHz, 1.3V/µs

■ Operating from 2.7V to 12V

■ Low input offset voltage: 900µV max. (TS925A)

■ Adjustable phantom ground (V

■ Standby mode

■ ESD internal protection: 2kV

■ Latch-up immunity

Description

The TS925 is a rail-to-rail quad BiCMOS operational amplifier optimized and fully specified for 3V and 5V operation.

High output current allows low load impedances to be driven. An internal low impedance phantom ground eliminates the need for an external reference voltage or biasing arrangement.

The TS925 exhibits very low noise, low distortion and high output current making this device an excellent choice for high quality, low voltage or battery operated audio/telecom systems.

The device is stable for capacitive loads up to 500pF. When the STANDBY mode is enabled, the total consumption drops to 6µA (V

CC

/2)

= 3V).

Output 1

Inverting

Input 1

Non-inverting

Input 1

V

CC

Non-inverting

Input 2

Inverting

Input 2

Output 2

Phantom ground

TS925

N DIP16

(Plastic Package)

D SO-16

(Plastic Micropackage)

P TSSOP16

(Thin Shrink Small Outline Package)

Pin connections (top view)

16

15

14

13

12

11

10

9

Output 4

Inverting Input 4

Non-inverting Input 4

-

V

CC

Non-inverting Input 3

Inverting Input 3

Output 3

Stdby

1

2

3

+

4

5

6

7

8

-

+

-

+

-

Applications

■ Headphone amplifier

■ Soundcard amplifier, piezoelectric speaker

■ MPEG boards, multimedia systems...

November 2005 1/17

■ Cordless telephones and portable

communication equipment

■ Line driver, buffer

■ Instrumentation with low noise as key factor

Rev 2

www.st.com

17

Order Codes

Part Number Temperature Range Package Packing Marking

TS925

TS925IN TS925ID/IDT SO-16 SO-16 TS925IPT TSSOP16 TSSOP16 TS925AIN DIP16 DIP16 TS925AIN TS925AID SO-16 SO-16 TS925AIPT TSSOP16 TSSOP16

-40°C to +125°C

DIP16 DIP16 TS925IN

925I

925AI

2/17

TS925 Absolute Maximum Ratings

1 Absolute Maximum Ratings

Table 1. Key parameters and their absolute maximum ratings

Symbol Parameter Condition Value Unit

VCC

Vid

V

T

R

thja

R

thjc

Supply voltage

Differential Input Voltage

Input Voltage

i

Maximum Junction Temperature 150 °C

j

Thermal Resistance Junction to Ambient

Thermal Resistance Junction to Case

(1)

ESD Electro-Static Discharge

Output Short Circuit Duration

Latch-up Immunity 200 mA

Soldering Temperature

(2)

SO-16 TSSOP16 DIP16

HBM Human Body Model

(3)

MM Machine Model

(4)

CDM Charged Device Model

10sec, Pb-free package

14 V

±1 V

-0.3 to VCC+0.3

V

DD

95 95 63

30 25 33

2kV

200 V

1kV

see note

260 °C

V

°C/W

(5)

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

4. 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 < 5Ω), into pin to pin of device.

5. There is no short-circuit protection inside the device: short-circuits from the output to V heating. The maximum output current is approximately 80mA, independent of the magnitude of Vcc. Destructive dissipation can result from simultaneous short-circuits on all amplifiers.

can cause excessive

cc

Table 2. Operating conditions

Symbol Parameter Value Unit

T

V

oper

Supply Voltage 2.7 to 12 V

CC

V

Common Mode Input Voltage Range

icm

-0.2 to VCC +0.2

DD

Operating Free Air Temperature Range -40 to +125 °C

V

3/17

Electrical Characteristics TS925

2 Electrical Characteristics

Table 3. Electrical characteristics for VCC=3V, VDD=0V, V

to V

CC

/2, T

= 25°C (unless otherwise specified)

amb

icm=VCC

/2, RL connected

Symbol Parameter Conditions Min. Typ. Max. Unit

V

Input Offset Voltage at T

io

DV

V

Input Offset Voltage Drift 2 µV/°C

io

I

Input Offset Current

io

I

Input Bias Current

ib

High Level Output Voltage RL=10kΩ

OH

V

Low Level Output Voltage RL=10kΩ

OL

A

Large Signal Voltage Gain V

vd

GBP Gain Bandwidth Product

at T

V

R R

RL=10kΩ R R

R

amb

TS925 TS925A

min.

TS925 TS925A

=1.5V

out

=2.5V

out

=600Ω

L

=32Ω

L

=600Ω

L

=32Ω

L

= 2V

out

=600Ω

L

=32Ω

L

= 600Ω

L

=+25°C

≤ T

amb

pk-pk

≤ T

max

3

0.9

:

mV

5

1.8

130 nA

15 100 nA

2.90

2.87

2.63

50

100 mV

180

200

35

V/mV

16

4MHz

CMR Common Mode Rejection Ratio 60 80 dB

V

SVR Supply Voltage Rejection Ratio

I

Output Short-Circuit Current 50 80 mA

o

Vcc = 2.7 to 3.3V

SR Slew Rate 0.7 1.3 V/µs

Pm Phase Margin at Unit Gain

GM Gain Margin

e

Equivalent Input Noise Voltage f = 1kHz 9

n

R

THD Total Harmonic Distortion V

f=1kHz, A R

C

Channel Separation

s

4/17

= 600Ω, CL =100pF

L

= 600Ω, CL =100pF

L

=2V

out

=600Ω

L

pk-pk

v

,

=1,

60 85 dB

68 Degrees

12 dB

nV

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

0.01 %

120 dB

TS925 Electrical Characteristics

Table 4. Global circuit

Symbol Parameter Conditions Min. Typ Max. Unit

I

Total Supply Current No load, V

CC

I

Total Supply Current in STANDBY Pin 9 connected to V

stby

V

1. The STANDBY mode is currently enabled when Pin 9 is GROUNDED and disabled when Pin 9 is left OPEN.

Pin 9 Voltage to enable the

enstby

STANDBY mode

Pin 9 Voltage to disable the

distby

STANDBY mode

(1)

at T at T

amb min

Table 5. Phantom ground

Symbol Parameter Conditions Min. Typ Max. Unit

V

Phantom Ground Output Voltage No Output Current

pg

out

=+25°C

≤ T

amb

=+25°C

≤ T

amb

= V

≤ T

cc/2

max

cc-

1.1

V

-5%

57mA

6 µA

0.3

0.4

1

V

cc/2

cc/2 Vcc/2

+5%

V

I

E

I

1. C

Phantom Ground Output Short

pgsc

Circuit Current - Sourced

Z

Phantom Ground Impedance

pg

Phantom Ground Output Voltage

npg

Noise

Phantom Ground Output Short

pgsk

Circuit Current - Sinked

is the decoupling capacitor on Pin9.

dec

DC to 20kHz

f=1kHz

= 100pF

C

dec

C

= 1nF

dec

C

= 10nF

dec

(1)

12 18 mA

3 Ω

200

40

nV

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

Hz

17

12 18 mA

5/17

Electrical Characteristics TS925

Table 6. Electrical characteristics for VCC = 5V, VDD = 0V, V

to V

CC

/2, T

= 25°C (unless otherwise specified)

amb

= VCC/2, RL connected

icm

Symbol Parameter Conditions Min. Typ. Max. Unit

V

Input Offset Voltage at T

io

DV

V

Input Offset Voltage Drift

io

Input Offset Current V

I

io

I

Input Bias Current V

ib

High Level Output Voltage RL= 10kΩ

OH

V

Low Level Output Voltage RL= 10kΩ

OL

A

Large Signal Voltage Gain V

vd

GBP Gain Bandwidth Product

at T

R R

RL=10k R R

R

amb

TS925 TS925A

min.

TS925 TS925A

= 2.5V

out

= 2.5V

out

= 600Ω

L

= 32Ω

L

= 600Ω

L

= 32Ω

L

= 2V

out

= 600Ω

L

= 32Ω

L

= 600Ω

L

=+25°C:

≤ T

amb

pk-pk

≤ T

max

3

0.9

:

mV

5

1.8

2 µV/°C

130 nA

15 100 nA

4.90

4.85

4.4

50

120 mV

300

200

40

V/mV

17

4MHz

CMR Common Mode Rejection Ratio 60 80 dB

V

SVR Supply Voltage Rejection Ratio

I

Output Short-Circuit Current 50 80 mA

o

V

SR Slew Rate 0.7 1.3 V/µs

Pm Phase Margin at Unit Gain

GM Gain Margin

e

Equivalent Input Noise Voltage f = 1kHz 9

n

THD Total Harmonic Distortion

C

Channel Separation

s

R

V A

6/17

= 3 to 5V

cc

= 600Ω, CL =100pF

L

= 600Ω, CL =100pF

L

= 2V

out

=1, RL= 600Ω

v

pk-pk

, f = 1kHz,

60 85 dB

68 Degrees

12 dB

nV

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

0.01 %

120 dB