UBA1707TS datasheet(22/36 Pages) PHILIPS

22 / 36 page

1999 Feb 17

Philips Semiconductors

Product speciﬁcation

Cordless telephone, answering machine

line interface

UBA1707

Electronic hook-switch control (pin EHI)

VIH

HIGH-level input voltage

2.3

−

VCC + 0.4 V

VIL

LOW-level input voltage

VCC = 3.0 to 5.5 V

GND

− 0.4 −

0.3VCC

Ibias

input bias current

input level = HIGH

µA

Transmit ampliﬁer (pins TXI+, TXI

− and LN)

Z

i

input impedance

between pins TXI+ and GND

or TXI

− and GND

−

Ω

between pins TXI+ and TXI

−−

−

Ω

Gv(TX)

voltage gain from TXI+/TXI

−

to LN

VTXI = 50 mV (RMS)

10.6

11.6

12.6

∆G

v(TX)(f)

voltage gain variation with

frequency referenced to 1 kHz

f = 300 to 3400 Hz

−±0.3

−

∆G

v(TX)(T)

voltage gain variation with

temperature referenced to

°C

Tamb = −25 to +75 °C

−±0.3

−

CMRR

common mode rejection ratio

−

PSRR

power supply rejection ratio

−

VLN(max)(rms)

maximum sending signal

(RMS value)

Iline = 15 mA; THD = 2%

1.2

1.4

−

Iline = 4 mA; THD = 10%

−

0.26

−

ViTX(max)(rms)

maximum transmit input

voltage (RMS value) for

2% THD on pin LN

Iline =15mA

−

0.35

−

Iline =90mA

−

0.75

−

Vno(LN)

noise output voltage at pin LN

pins TXI+ and TXI

−

short-circuited through

200

Ω in series with 10 µF;

psophometrically weighted

(P53 curve)

−−74

−

dBmp

Receive ampliﬁer (pins RXI and RXO; bit RXM)

Zi

input impedance between pins

RXI and GND

−

Ω

Gv(RX)

voltage gain from RXI to RXO

VRXI = 2 mV (RMS)

36.9

37.9

38.9

∆G

v(RX)(f)

voltage gain variation with

frequency referenced to 1 kHz

f = 300 to 3400 Hz

−±0.2

−

∆G

v(RX)(T)

voltage gain variation with

temperature referenced to

°C

Tamb = −25 to +75 °C

−±0.3

−

PSRR

power supply rejection ratio

−

THD

total harmonic distortion

VRXI = 2 mV (RMS)

−

0.03

−

VRXI = 12.5 mV (RMS)

−

VRXI = 19.5 mV (RMS);

Iline =90mA

−

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

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