參數(shù)資料
型號： PCF50732
廠商： NXP Semiconductors N.V.
英文描述： Baseband and audio interface for GSM
中文描述： 用于GSM基帶和音頻接口
文件頁數(shù)： 49/64頁
文件大小： 322K
代理商： PCF50732
1999 May 03
49
Philips Semiconductors
Objective specification
Baseband and audio interface for GSM
PCF50732
18.3
V
DDA
= 2.5 to 2.75 V; T
amb
=
40 to +85
°
C.
Voice band transmit (microphone to ASI)
Notes
1.
2.
Psophometrical weighting: a frequency weighting curve described in “ITU recommendation O.41”
The unit dBm0p: 0 dBm0p is generally defined as
3.14 dBFS, where dBFS denotes dB full scale, i.e. a signal with
an amplitude covering the complete range of digital values. The suffix ‘p’ refers to psophometrical weighting.
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX.
13
1000
UNIT
RES
MICADC
FSIN
MICADC
resolution of ADC
internal sampling
frequency
calibration gain range
calibration gain step
size
gain tolerance of coder
digital filter frequency
response of
implemented standard
VSP software (version:
vb5_all)
bit
kHz
GRAN
TXPGA
GSTP
TXPGA
24
0
64
+12
dB
steps
see Table 25
GTOL
VBTX
FRESP
VBTX
at TXPGA = 0 dB
f < 100 Hz
100 Hz < f < 200 Hz
f = 300 Hz to 3.3 kHz
f = 3.3 to 3.4 kHz
f
≥
4 kHz
f = 4.6 kHz
f = 6 to 30 kHz
1.5
1
1.5
40
45
45
50
+1.0
20
10
+1
0
20
dB
dB
dB
dB
dB
dB
dB
dB
FREJ
VBTX
out-of-band rejection
Microphone/auxiliary signal path
V
IN(rms)
nominal input level
(RMS value)
TXPGA = 0 dB, MICHI = 1
TXPGA = 0 dB, MICHI = 0
psophometrically weighted
(1)
; T
amb
= 25
°
C
35
7
75
dBm
dBm
dBm0p
(2)
N
IDLE
idle noise level
(pin ADO)
total harmonic distortion f = 1 kHz; PGA =
4 dB; ADO = +2 dBm0
signal-to-noise and
distortion
ADO = 0 dBm0
ADO =
10 dBm0
ADO =
20 dBm0
ADO =
30 dBm0
ADO =
40 dBm0
ADO =
45 dBm0
power supply crosstalk
applying a 100 mV (p-p)/217 Hz sine wave
on top of the analog power supply
THD
SINAD
30
40
45
45
40
30
25
1
2
%
dB
dB
dB
dB
dB
dB
dB
LSB
ADO = 3 dBm0
PSCT
VBTX
Audio Serial Interface (ASI)
FASOUT
FSYNC
AFS
PCM output bit rate
PCM frame
synchronization
frequency at pin AFS
128
8
2048
kbits/s
kHz
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