Philips Semiconductors RF Communications Products

Product specification

NE/SA577

Unity gain level programmable low power compandor

December 15, 1993

3

ELECTRICAL CHARACTERISTICS

R1, R2 and R3 are 1% resistors.

LIMITS

SYMBOL

PARAMETER

TEST CONDITIONS

NE/SA577

UNITS

MIN

TYP

MAX

2

3.6

7

V

Supply current

No signal

1.4

2

mA

1.7

1.8

1.9

V

Summing amp output load

10

k

Ω

THD

Total harmonic distortion

1kHz, 0dB, BW = 3.5kHz

0.25

1.5

%

Expandor output noise voltage

10

25

µV

0dB

Unity gain level

0dB at 1kHz

–1.5

0.18

1.5

dB

R1 = R3 = 18.7k

Ω, R2 = 24.3kΩ

0

dBV

R1 = R3 = 22.6k

Ω, R2 = 100kΩ

–10

dBV

R1 = R3 = 7.15k

Ω, R2 = 100kΩ

–20

dBV

R1 = R3 = 1.33k

Ω, R2 = 200kΩ

–40

dBV

Output voltage offset

No signal

–150

1

150

mV

Expandor output DC shift

No signal to 0dB

–100

7

100

mV

Tracking error relative to 0dB output

-20dB expandor

–1.0

0.3

1.0

dB

Crosstalk, COMP to EXP

–80

–65

dB

Output swing low

0.2

V

Output swing high

V

NOTE:

AN1762.