AM79C202 Legerity, AM79C202 Datasheet - Page 12

• Manufacturer Part Number: AM79C202
• Description: (AM79C202 / AM79212) PCM CODEC
• Manufacturer: Legerity

ELECTRICAL REQUIREMENTS
Power Dissipation
Loop resistance = 0 to ∞ (not including fuse resistors),
2 x 50 Ω fuse resistors, V
power dissipation measurements, DC Feed conditions
are programmed as follows:
VAPP (Apparent voltage) = 50.2 V
ILA (Active state current limit) = 42.3 mA
ILD (Disable state current limit) = 21.2 mA
Thermal Resistance
The junction-to-air thermal resistance of the ASLIC de-
vice in a 32-pin, PLCC package will be less than 45°C/
W.
The junction-to-air thermal resistance of the ASLAC de-
vice in a 32-pin, PLCC package will be less than 45°C/
W.
12
ASLIC device power dissipation
Normal polarity
ASLAC device power dissipation
MCLK, PCLK = 2.048 MHz
Description
BAT
= –48 V, V
On-hook Disconnect
On-hook Standby
On-hook Disable
On-hook Active
Off-hook Active R
Off-hook Disable R
ASLAC device Activated
ASLAC device Inactive, C/I Standby
state command issued
Am79212/Am79C202 Data Sheet
CC
= +5 V. For
Table 1. Power Dissipation
Test Conditions
L
L
= 294 Ω
= 600 Ω
RFD (Feed resistance) = 807 Ω
VAS (Anti-sat activate voltage) = 8.2 V
N2 (Anti-sat feed resistance factor) = 2
VOFF (Longitudinal offset voltage) = 6 V
RTMG (Thermal management resistor) = 1200 Ω
RREF (Referenced current setting resistor) = 7.87 k Ω
Min
Typ
120
330
850
800
30
50
85
22
Max
1200
105
215
450
950
110
70
25
Unit
mW