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參數(shù)資料
| 型號： | U3900BM |
| 英文描述： | Programmable Telephone Audio Processor |
| 中文描述： | 程控電話音頻處理器 |
| 文件頁數(shù)： | 20/34頁 |
| 文件大?。?/td> | 762K |
| 代理商： | U3900BM |
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U3900BM
Target Specification
Rev. A2, 25-Aug-98
27 (34)
Electrical Characteristics (continued)
Parameters
Test Conditions / Pins
Symbol
Min.
Typ.
Max.
Unit
Fig.
Maximum output
voltage
IL ≥ 19 mA, d < 5%
VMIC = 10 mV
CTXA = 1
F
DBM5 = 0
VLmax
1.3
2.5
3.7
dBm
DBM5 = 1, VMIC = 14 mV
VLmax
3.8
5.0
6.2
dBm
VMIC = 20 mV
MICG[0:1] = 3
VMICOmax
–5.2
dBm
Noise at line psopho-
metrically weighted
IL ≥ 14 mA
MICG[0:1] = 2
AGATX[0:2] = 7
no
– 80
– 72
dBmp
Anti-clipping:
attack time
release time
CTXA = 1
mF
each 3 dB overdrive
ta
tr
0.5
16
ms
Gain at low operating
current
IL = 8 mA
IMP = 1 mA
RDC = 680 k
VMIC = 0.5 mV
IVMIC = 300
mA
GT
46.5
49.5
dB
Distortion at low oper-
ating current
IL = 8 mA
IMP = 1 mA
RDC = 680 k
VMIC = 5 mV
IVMIC = 300
mA
dt
5
%
Receiving amplifier
IL = 14 mA, VGEN = 300 mV,
ERX = ETX = ENMIC = ENSTBAL = I1O1 = I3O3 = 1, SL[0:1] = 0, LF[0:3] = 1, P[0:4] = 31,
AGARX[0:2] = 0
Adjustment range of
receiving gain
Single ended,
IL ≥ 14 mA,
Mute = 1,
EA[0:4] = 2 – 31
AGARX[0:2] = 0 – 7
GR
–25
11
dB
Receiving amplifica-
tion
Differential
AGARX[0:2] = 0
EA[0:4] = 21
EA[0:4] = 31
GR
–1
10
0
11
1
12
dB
Frequency response
IL ≥ 14 mA, f = 3.4 kHz
DGRF
–1
0
dB
Gain change with cur-
rent
IL = 14 to 100 mA
DGR
±0.5
dB
Gain deviation
Tamb = –10 to +60°C
DGR
±0.5
dB
Ear protection
differential
IL ≥ 14 mA,
VGEN = 11 Vrms
EP
3
Vrms
MUTE suppression
IL = 14 mA
DGR
60
dB
Output voltage d < 2%
differential
IL = 14 mA
Zear = 68 nF + 100
EA[0:4] = 11
tbd.
Vrms
Maximum output
current d < 2%
Zear = 100
EA[0:4] = 31
10
mAp
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