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參數資料
型號: PCD5032
廠商: NXP SEMICONDUCTORS
元件分類: 編解碼器
英文描述: ADPCM CODEC for digital cordless telephones
中文描述: A-LAW, ADPCM CODEC, PQFP44
封裝: 14 X 14 MM, PLASTIC, SOT-205AG, QFP-44
文件頁數: 16/24頁
文件大小: 136K
代理商: PCD5032
1997 Apr 03
16
Philips Semiconductors
Product specification
ADPCM CODEC for digital cordless
telephones
PCD5032
11 FILTER CHARACTERISTICS
V
DD
= 2.7 to 5.5 V; V
SS
= 0 V; T
amb
=
25 to +70
°
C.
Notes
1.
2.
Frequency band is 300 Hz to 3400 Hz. Maximum load capacitance = 100 pF differentially, or 200 pF each pin.
Measured with psophometric filter (CCITT G.223). Only fulfilled at V
DD
noise level less than 40 mV (peak value)
(0 to 20 kHz). Measured on sample basis at V
DD
= 3.0 V,T
amb
= 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.
Group delay includes ADPCM/PCM conversion; signal frequency = 1.5 kHz. Value given is for RAS/TAS signals
asserted simultaneously.
3.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Transmitter
R
PB
passband ripple
(300 to 3000 Hz)
frequency response
0.5
dB
f = 50 Hz
f = 3400 Hz
f = 4600 Hz
f = 8000 Hz
35
35
35
60
2
2
2
2
dB
dB
dB
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
t
d(TX)
t
d(RX)
t
d(g)
transmitter
receiver
group delay distortion (Loop 1)
note 3
note 3
Fig.11
tbf
tbf
400
525
tbf
μ
s
μ
s
μ
s
handbook, halfpage
MGK078
22
27
33
10
0
20
30
40
50
60
70
80
60
70
50
40
30
20
10
0
+
10
input level (dBm0)
S/(N
+
THD)
G.712
Fig.10 Typical performance of AD and DA in
cascade.
handbook, halfpage
MGK077
0.0
td(g)
250.0
μ
s
500.0
μ
s
750.0
μ
s
1.0 ms
1.5 ms
1.25 ms
300
500
600 1000
1500
2600
2800
3400
CCITT G.712
frequency (Hz)
Fig.11 Group delay distortion: Transmit and
Receive (loop measurement).
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