2

500 - 15 - 09

V

B

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

68

72

76

dB

V

CC

= 1.3 V

66

71

76

dB

Temperature Coefficient of Gain

η

A

-

0.07

-

dB/

o

C

-

0.21

0.28

mA

V

cc

= 1.3 V

-

0.16

0.23

mA

Temperature Coefficient of Current

-

-0.002

-

mA/

o

C

1.3

1.5

1.9

mA

V

cc

= 1.3 V

1.0

1.3

1.7

mA

-2

5

%

V

cc

= 1.3 V

-

-

6

%

Input Referred Noise

Bandwidth at 12 dB/OCT - 0.2 to 10 kHz

-

1.2

2.0

Battery Resistance Stability

R

VC

= 100k (S1-open)

22

-

-

Ω

LC505

-

8

-

k

Ω

LD505

-

27

-

k

Ω

Low

-

100

-

Hz

High

-

5000

-

Hz

R

VC

= 0 to 100k

Ω

36

43

-

dB

(S1 - closed/open)

Volume Control Range

R

VC

= 0 to 100k

Ω

34

42

-

dB

(S1 - closed/open) V

cc

= 1.3 V

LC505

-

-0.4

-

dB/

Ω

LD505

-

+0.16

-

dB/

Ω

Amplifier Current

I

A

All switches remain as shown in test circuit unless stated in condition column

cc

= 1.55 V

ELECTRICAL CHARACTERISTICS

Gain Dependance of RB

Frequency Response (-3 dB)

Input Impedance

Total Harmonic Distortion

Transducer Current

I

L

Gain

A

V

LD505

OUT

1

3

4

6

1

4

5

8

R

E

IN

VC

GND

V

B

OUT

R

E

LIMITER

LC505

VC

IN

GND

MIC

BIAS

PIN CONNECTION

ABSOLUTE MAXIMUM RATINGS

PARAMETER

VALUE & UNITS

Supply Voltage

3 V

Operating Temperature

-10 to +40

°C

Power dissipation

25 mW

CAUTION

CLASS 1 ESD SENSITIVITY