UBA1707TS datasheet(23/36 Pages) PHILIPS

23 / 36 page

1999 Feb 17

Philips Semiconductors

Product speciﬁcation

Cordless telephone, answering machine

line interface

UBA1707

Vno(RXO)(rms)

noise output voltage at

pin RXO (RMS value)

RXI open-circuit;

psophometrically weighted

(P53 curve)

−−81

−

dBVp

∆G

v(RX)(m)

voltage gain reduction from

pin RXI to RXO when muted

VRXI = 10 mV (RMS);

bit RXM = 1

−

Automatic gain control (pin AGC; bits RAGC1, RAGC2, SAGC and AGC)

∆Gv(trx)

gain control range for transmit

and receive ampliﬁers with

respect to Iline =15mA

Iline =90mA

−

6.5

−

Istart

highest line current for

maximum gain

bits RAGC1 = 1; RAGC2 = 1

−

22.5

−

bits RAGC1 = 1; RAGC2 = 0

−

bits RAGC1 = 0; RAGC2 = 1

−

bits RAGC1 = 0; RAGC2 = 0

−

29.5

−

Istop

lowest line current for

minimum gain when

Istart =23mA

bits SAGC = 0; RAGC1 = 1;

RAGC2 = 1

−

bits SAGC = 1; RAGC1 = 1;

RAGC2 = 1

−

∆G

v(trxoff)

gain variation for transmit and

receive ampliﬁers when AGC

is off

bit AGC = 0;

Iline = 15 to 140 mA

−−

±0.2

Ampliﬁers

AUXILIARY AMPLIFIER (PINS AXI AND AXO; BIT AXM)

Zi

input impedance between pins

AXI and GND

−

3.8

−

Ω

Gv(AX)

voltage gain from pin

AXI to AXO

VAXI = 2 mV (RMS)

30.8

31.8

32.8

∆G

v(AX)(f)

voltage gain variation with

frequency referenced to 1 kHz

f = 300 to 3400 Hz

−±0.2

−

∆G

v(AX)(T)

voltage gain variation with

temperature referenced to

°C

Tamb = −25 to +75 °C

−±0.2

−

PSRR

power supply rejection ratio

−

Vno(AXO)(rms)

noise output voltage at

pin AXO (RMS value)

pin AXI connected to pin

GND through 200

Ω in series

with 10

µF;

psophometrically weighted

(P53 curve)

−−83

−

dBVp

∆Gv(AX)(m)

voltage gain reduction from

pin AXI to AXO when ampliﬁer

muted

VAXI = 10 mV (RMS);

bit AXM = 1

−

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

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