參數(shù)資料
型號: AM79D2251JC
廠商: ADVANCED MICRO DEVICES INC
元件分類: 編解碼器
英文描述: Dual Intelligent Subscriber Line Audio-Processing Circuit (ISLAC)
中文描述: PCM CODEC, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 13/35頁
文件大?。?/td> 410K
代理商: AM79D2251JC
Am79D2251
13
LINECARD PARTS LIST
The following list defines the parts and part values required to meet target specification limits for
channel i of the linecard (i = 1, 2)
Notes:
1. Value can be adjusted to suit application.
2. Can be looser for relaxed ring-trip requirements. 1% match (each resistor ±1%) gives 1.275 mA uncertainty in ringing current
sensing.
3. Required for metering > 2.5 Vrms, otherwise may be omitted.
4. DT2i is optional - Should be put if there is a chance that this chip may be replaced by Am79R251.
Item
Type
Value
Tol.
Rating
Comments
U1
U2
U3, U4
U5
Am79R241
Am79X22xx
P1001SC
TISP61089
ISLIC device
ISLAC device
TECCOR Battrax protector
Transient Voltage Suppresser, Power
Innovations
100 V
80 V
D1, D2
DHi, DLi, DT1i, DT2i
4
RFAi, RFBi
RSAi, RSBi
RTi
RRXi
RREF
RMGLi, RMGPi
RSHB, RSLB
RHLai
RHLbi
RHLci
RHLdi
CHLbi
CHLdi
RMTi
RLGi
RTESTMi
RTESTLi
CADi, CBDi
1
CBATHi, CBATLi
CHPi
CSi
1
CSSi
3
Components for External Ringing
RGFDi
RSRBi, RSRc
Diode
Diode
1 A
100 V
100 V
100 mA
50 ns
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Capacitor
Capacitor
Resistor
Resistor
Resistor
Resistor
Capacitor
50
200 k
80.6 k
100 k
69.8 k
1 k
750 k
40.2 k
4.32 k
2.87 k
2.87 k
3.3 nF
0.82
μ
F
3.01 k
6.04 k
2 k
2 k
22 nF
2%
2%
1%
1%
1%
5%
1%
1%
1%
1%
1%
10 %
10 %
1%
1%
1%
1%
10%
2 W
1/4 W
1/8 W
1/8 W
1/8 W
1 W
1/8 W
1/10 W
1/10 W
1/10 W
1/10 W
10 V
10 V
1/8 W
1/8 W
1 W
1 W
100 V
Fusible PTC protection resistors
Sense resistors
Current reference
Thermal management resistors
Not Polarized
Ceramic
Metallic test
Longitudinal test
Ceramic, not voltage sensitive
Capacitor
Capacitor
Capacitor
100 nF
22 nF
100 nF
20%
20%
20%
100 V
100 V
100 V
Ceramic
Ceramic
Protector speed up capacitor
Capacitor
56 pF
5%
100 V
Ceramic
Resistor
Resistor
510
750 k
2%
2%
2 W
1/4 W
1.2 W typ
Matched to within 0.2% for initial tolerance
and 0 to 70
°
C ambient temperature range.
2
17 mW typ
DPDT
KRi
Relay
5 V Coil
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