am7945 Advanced Micro Devices, am7945 Datasheet - Page 6

• Manufacturer Part Number: am7945
• Description: Subscriber Line Interface Circuit
• Manufacturer: Advanced Micro Devices

ELECTRICAL CHARACTERISTICS
The Am7945 device is tested under the following conditions unless otherwise noted: BAT = –48 V, V
V
6
Analog output (V
Analog output (V
Analog (RSN) input impedance
Longitudinal impedance at A or B
Overload level
Transmission Performance
2-wire return loss
(See Test Circuit D)
Longitudinal Balance (2-Wire and 4-Wire, See Test Circuit C); R
Longitudinal to metallic L-T, L-4
normal polarity
Longitudinal signal generation 4-L
Longitudinal current per pin
Insertion Loss (2- to 4-Wire and 4- to 2-Wire, See Test Circuits A and B) BAT = –48 V, R
Gain accuracy
Gain accuracy, OHT state
Variation with frequency
Gain tracking
Balance Return Signal (4- to 4-Wire, See Test Circuit B) BAT = –48 V, R
Gain accuracy
Variation with frequency
Gain tracking
Group delay
Total Harmonic Distortion (2- to 4-Wire or 4- to 2-Wire, See Test Circuits A and B) BAT = –48 V, R
Harmonic distortion
300 Hz to 3.4 kHz
EE
= –5 V, R
Description
L
= 900 . The device is not tested in Polarity Reversal state.
TX
TX
) impedance
) offset
0°C to +70°C
–40°C to +85°C
300 Hz to 3.4 kHz
4-wire and 2-wire, Active state
On hook, R
Active or OHT state
200 to 3.4 kHz
200 Hz to 1 kHz
1 kHz to 3.4 kHz
300 Hz to 800 Hz, normal polarity
Active state and OHT state
0 dBm, 1 kHz
–10 dBm, On hook, R
300 to 3.4 kHz, relative to 1 kHz
+7 dBm to –55 dBm, reference 0 dBm
0 dBm, 1 kHz
300 to 3.4 kHz, relative to 1 kHz
+3 dBm to –55 dBm, reference 0 dBm
f = 1 kHz
2-wire level = 0 dBm
2-wire level = +7 dBm
Test Conditions (See Note 1)
Am7945 Data Sheet
LAC
= 900 ,
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
LAC
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
= 900
L
= 740
L
= 900
at BAT = 48 V
–0.15
–0.20
–0.10
–0.15
–0.10
–0.15
–0.15
–0.20
–0.10
–0.15
–0.10
–0.15
–2.5
0.95
–1.0
Min
–37
–40
26
52
50
52
50
40
20
Typ
–64
–55
27
3
1
L
= 900
+0.15
+0.20
+0.10
+0.15
+0.10
+0.15
+0.15
+0.20
+0.10
+0.15
+0.10
+0.15
+2.5
+1.0
Max
+37
+40
–50
–40
20
35
4
L
= 900
mArms
Vrms
Unit
Vpk
mV
dB
dB
dB
dB
dB
CC
µs
= +5 V,
Note
4, 8
3, 4
4, 8
2a
2b
4
4
4
4
4
4
4
4
4
3
4
3
4
4