AS1702 Ver la hoja de datos (PDF) - austriamicrosystems AG

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Fabricante

AS1702

1.8W Single-Channel Audio Power Amplifiers

austriamicrosystems AG 

AS1702 - AS1705

Data Sheet - Electrical Characteristics

3V Operation

Table 5. Electrical Characteristics – 3V Supply, TAMB = +25ºC (unless otherwise specified)

Symbol

Parameter

Conditions

Min Typ

Max Unit

ICC

Supply Current 1

VIN- = VIN+ = VBIAS;

TAMB = -40 to +85ºC, per amplifier

7.5

mA

ISHDN Shutdown Supply

SHDN = SHDM = GND per amplifier

0.05

1

µA

VIH

SHDN, SHDM

VIL

Threshold

0.7 x VCC

V

0.3 x VCC

VBIAS

Common-Mode

Bias Voltage 2

VCC/2 -

5%

VCC/2 VCC/2 + 5%

V

AV = 0dB (AS1703)

VOS

Output Offset

Voltage

VIN- = VIN+ = VBIAS AV = 3dB (AS1704)

AV = 6dB (AS1705)

±1

±10

±1

±15

mV

±1

±20

AV = 0dB (AS1703)

0.2

VIC

Common-Mode

Input Voltage 3

Inferred from CMRR

Test

AV = 3dB (AS1704)

AV = 6dB (AS1705)

0.6

1.0

VCC - 0.2

VCC - 0.6

mV

VCC - 1.0

External gain AS1702

1.0

VCC - 1.0

RIN Input Impedance

AS1703, AS1704, AS1705

10

15

20

kΩ

CMRR

Common-Mode

Rejection Ratio

fN = 1kHz

-64

dB

PSRR

Power Supply

Rejection Ratio

VIN- = VIN+ = VBIAS;

VRIPPLE = 200mVp-p;

RL = 8Ω; CBIAS = 1µF

f = 217Hz

f = 1kHz

-79

dB

-73

POUT

Output Power 4

RL = 4Ω, THD+N = 1%; fIN = 1kHz

RL = 8Ω, THD+N = 1%; fIN = 1kHz

640

mW

440

Total Harmonic RL = 4Ω, fIN = 1kHz, POUT = 460mW, AV = 6dB

0.06

THD+N Distortion plus

%

Noise 5

RL = 8Ω, fIN = 1kHz, POUT = 330mW, AV = 6dB

0.04

Gain Accuracy

AS1703, AS1704, AS1705

±1

±2

%

Thermal Shutdown

Threshold

+145

ºC

Thermal Shutdown

Hysteresis

9

ºC

Power-up/Enable

tPU

from

Shutdown Time

125

ms

tSHDN Shutdown Time

3.5

µs

VPOP Turn-Off Transient 6

50

mV

1. Quiescent power supply current is specified and tested with no load. Quiescent power supply current depends on

the offset voltage when a practical load is connected to the amplifier. Guaranteed by design.

2. Common-mode bias voltage is the voltage on BIAS and is nominally VCC/2.

3. Guaranteed by design.

4. Guaranteed by design.

5. Measurement bandwidth for THD+N is 22Hz to 22kHz.

6. Peak voltage measured at power-on, power-off, into or out of SHDN. Bandwidth defined by A-weighted filters,

inputs at AC GND. VCC rise and fall times ≥ 1ms.

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Revision 1.47

5 - 20

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