PCA1070P datasheet(22/36 Pages) PHILIPS

22 / 36 page

1997 Jun 20

Philips Semiconductors

Product speciﬁcation

Multistandard programmable analog

CMOS transmission IC

PCA1070

OMIC: MICROPHONE PREAMPLIFIER OUTPUT

ZOMIC

output impedance

−

400

−Ω

GOMIC

gain from MIC+/MIC

− to

OMIC

dynamic limiter not active; note 13

−

LN: SENDING CHANNEL OUTPUT; notes 14 and 15

BRL

balance return loss ZLN

with Zref = 220 Ω +

(820

Ω // 115 nF)

Zline = ∞Ω; f = 300 Hz

−

Zline = ∞Ω; f = 1 kHz

−

Zline = ∞Ω; f = 3.4 kHz

−

Selectable values for Zset =Ra +(Rb // C) with C = 1/(2 π× Rb × fp); note 16

non-shunted resistance of

Zset

−

200

−Ω

Ra(min)

minimum selectable value

for Ra

ZSAx = 001; note 17

−

−Ω

Ra(max)

maximum selectable

value for Ra

ZSAx = 11x

−

600

−Ω

Ra(step)

step resolution for Ra

−

100

−Ω

shunted resistance of Zset

−

800

−Ω

Rb(min)

minimum selectable value

for Rb

ZSBx = 001; notes 17 and 18

−

600

−Ω

Rb(max)

maximum selectable

value for Rb

ZSBx = 1x1

−

1000

−Ω

Rb(step)

step resolution for Rb

−

100

−Ω

pole frequency

determining shunt

capacitance C

−

1915

−

fp(min)

minimum selectable fp

ZSPx = 0000

−

828

−

fp(max)

maximum selectable fp

ZSPx = 0111; note 19

−

5859

−

multiplication factor for fp

fp(x +1)=n × [fp(x)]

−

1.322

−

vLN(noise)

noise output voltage

psophometrically weighted

(O41 curve)

−−76

−

dBmp

Dynamic limiter

VLN(p-p)

threshold of dynamic

limiter (peak-to-peak)

3.1

3.5

3.9

DLT = 1

2.2

2.6

3.0

low voltage condition;

VSLPE = 3.1 V

−

2.4

−

low current condition; Iline =9mA

−

2.6

−

THD

total harmonic distortion

Vi = 12 mV (RMS) + 10 dB

−

2.5

5.0

Dynamic behaviour of limiter; note 20

tatt

attack time

Vi steps from 12 to 38 mV (RMS)

−

1.5

−

trel

release time

Vi steps from 38 to 12 mV (RMS)

−

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

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