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PCD5032H

ADPCM CODEC for digital cordless telephones

Philips Electronics 

Philips Semiconductors

ADPCM CODEC for digital cordless

telephones

Product specification

PCD5032

11 FILTER CHARACTERISTICS

VDD = 2.7 to 5.5 V; VSS = 0 V; Tamb = −25 to +70 °C.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP. MAX. UNIT

Transmitter

RPB

passband ripple

(300 to 3000 Hz)

frequency response

f = 50 Hz

f = 3400 Hz

f = 4600 Hz

f = 8000 Hz

−

−

−35

−

−35

−

−35

−

−60

−

0.5

dB

−2

dB

−2

dB

−2

dB

−2

dB

Analog-to-Digital converter

S/N

signal-to-noise ratio

Fig.10; notes 1 and 2

35

−

−

dB

Digital-to-Analog converter

S/N

signal-to-noise ratio

Fig.10; notes 1 and 2

35

−

−

dB

Group delay

td(TX)

td(RX)

td(g)

transmitter

receiver

group delay distortion (Loop 1)

note 3

note 3

Fig.11

−

−

400

µs

−

−

525

µs

tbf

tbf

tbf

µs

Notes

1. Frequency band is 300 Hz to 3400 Hz. Maximum load capacitance = 100 pF differentially, or 200 pF each pin.

2. Measured with psophometric filter (CCITT G.223). Only fulfilled at VDD noise level less than 40 mV (peak value)

(0 to 20 kHz). Measured on sample basis at VDD = 3.0 V,Tamb = 25 °C, compliant with G.712. Signal level is

−40 dBm0 on PCM interface; 0.4 mV (RMS) on analog input. Gain setting is 0 dB.

3. Group delay includes ADPCM/PCM conversion; signal frequency = 1.5 kHz. Value given is for RAS/TAS signals

asserted simultaneously.

handbook, halfpage 80

70

S/(N + THD)

60

50

40

33

30 27

20 22

10

G.712

0

−70 −60 −50 −40 −30 −20 −10 0 +10

input level (dBm0)

MGK078

Fig.10 Typical performance of AD and DA in

cascade.

handbook,1h.7al5fpmagse

td(g) 1.5 ms

1.25 ms

1.0 ms

750.0 µs

500.0 µs

250.0 µs

CCITT G.712

0.0

300 600 1000

500

1500

frequency (Hz)

2600

2800

3400

MGK077

Fig.11 Group delay distortion: Transmit and

Receive (loop measurement).

1997 Apr 03

16

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