AM79D2251JC AMD [Advanced Micro Devices], AM79D2251JC Datasheet - Page 13

• Manufacturer Part Number: AM79D2251JC
• Description: Dual Intelligent Subscriber Line Audio-Processing Circuit (ISLAC)
• Manufacturer: AMD [Advanced Micro Devices]

LINECARD PARTS LIST
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
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.
U1
U2
U3, U4
U5
D1, D2
DHi, DLi, DT1i, DT2i
RFAi, RFBi
RSAi, RSBi
RTi
RRXi
RREF
RMGLi, RMGPi
RSHB, RSLB
RHLai
RHLbi
RHLci
RHLdi
CHLbi
CHLdi
RMTi
RLGi
RTESTMi
RTESTLi
CADi, CBDi
CBATHi, CBATLi
CHPi
CSi
CSSi
Components for External Ringing
RGFDi
RSRBi, RSRc
KRi
sensing.
1
3
Item
1
The following list defines the parts and part values required to meet target specification limits for
channel i of the linecard (i = 1, 2)
4
Resistor
Resistor
Am79R241
Am79X22xx
P1001SC
TISP61089
Diode
Diode
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Capacitor
Capacitor
Resistor
Resistor
Resistor
Resistor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Resistor
Resistor
Relay
Type
100 mA
80.6 k
69.8 k
40.2 k
4.32 k
2.87 k
2.87 k
3.01 k
6.04 k
5 V Coil
0.82 F
Value
200 k
100 k
750 k
750 k
100 nF
100 nF
3.3 nF
510
22 nF
22 nF
56 pF
50
1 k
2 k
2 k
1 A
Am79D2251
10 %
10 %
10%
20%
20%
20%
Tol.
2%
2%
1%
1%
1%
5%
1%
1%
1%
1%
1%
1%
1%
1%
1%
5%
2%
2%
Rating
1/10 W
1/10 W
1/10 W
1/10 W
100 V
100 V
100 V
1/4 W
1/8 W
1/8 W
1/8 W
1/8 W
1/8 W
1/8 W
100 V
100 V
100 V
100 V
100 V
1/4 W
80 V
10 V
10 V
2 W
1 W
1 W
1 W
2 W
ISLIC device
ISLAC device
TECCOR Battrax protector
Transient Voltage Suppresser, Power
Innovations
50 ns
Fusible PTC protection resistors
Sense resistors
Current reference
Thermal management resistors
Not Polarized
Ceramic
Metallic test
Longitudinal test
Ceramic, not voltage sensitive
Ceramic
Ceramic
Protector speed up capacitor
Ceramic
1.2 W typ
Matched to within 0.2% for initial tolerance
and 0 to 70
17 mW typ
DPDT
°
C ambient temperature range.
Comments
13
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