2

500 - 71 - 9

5

1kHz

RL=1K

VOUT

VB=1.3 VDC

RS

3.3K

ITRANS

- B

18K

33K

7

8

4

C2

10

3

6

1

2

IMIC

- A

RE

=27.5

RE

IB

C1

10

C3

1.0

RB= 4.75

V

MIC

ABSOLUTE MAXIMUM RATINGS

PARAMETER

VALUE/UNITS

Supply Voltage

5 V DC

Power Dissipation

25 mW

Operating Temperature Range

-10

°C to 40° C

Storage Temperature Range

-20

°C to 70° C

CAUTION

CLASS 1 ESD SENSITIVITY

PIN CONNECTION

1

4

5

8

A IN

GND

A OUT

R

E

B IN

V

B

B OUT

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Gain (Closed Loop)

A

CL

V

OUT

57

61

65

dB

Distortion

THD

V

OUT

-

1

4

%

Amplifier Current

I

AMP

I

AMP

=

I

A

MIC

125

195

255

µA

Transducer Current

I

TRANS H

R

E

= 27.5

1.1

1.3

1.7

mA

Transducer Current

I

TRANS L

R

E

=

∞

200

275

350

µA

Input Referred Noise

IRN

NFB 0.2 to 10 kHz at 12 dB/oct.

-

1

2

µV

Stable with Battery Resistance to

-

-

22

Ω

Input Bias Current (pin 3)

I

B

-50

0

50

nA

On Chip Emitter Resistor

R

E

-

100

-

Ω

Emitter Bias Voltage (Pin 7)

V

RE

-27

-

mV

Microphone Decoupling Resistor

R

MIC

-4

-

k

Ω

All parameters and switches remain as shown in Test Circuit unless otherwise stated in "Conditions" column

ELECTRICAL CHARACTERISTICS

Conditions: Frequency = 1 kHz, Temperature = 25

°C, Supply Voltage V

B

= 1.3 VDC

All resistors in ohms, all capacitors in

µF unless otherwise stated

Fig. 1 Test Circuit