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Lucent Technologies Inc.
33
Preliminary Data Sheet
July 2000
T8535/T8536 Quad Programmable Codec
Electrical Characteristics
(continued)
Gain and Dynamic Range
Table 13. Gain and Dynamic Range
Parameter
Symbol
GAL
Test Conditions
Min
Typ
Max
Unit
Absolute Levels
Maximum 0 dBm0 levels (1004 Hz):
VF
X
I (encoder milliwatt), all programma-
ble transmit gains set to 0 dB.
RCV (decoder milliwatt), termination
impedance off, all programmable
receive gains set to 0 dB.
Minimum 0 dBm0 levels (1004 Hz):
VF
X
I (encoder milliwatt),
XAG = 24 dB, GTX1 = 6 dB,
GTX2 = 0 dB.
RCV (decoder milliwatt), termination
impedance off, GRX1
= 0 dB,
GRX2
=
6 dB
VF
X
I
VF
R
OP to VF
R
ON (differential)
Transmit gain programmed for maxi-
mum 0 dBm0 test level, measured devi-
ation of digital code from ideal
0 dBm0 level at DX digital outputs, with
transmit gain set to 0 dB:
20 °C to 70 °C
0 °C to 85 °C
40
°C
to +85
°C
Measured transmit gain over the range
from maximum to minimum, calculated
deviation from the programmed gain rel-
ative to GXA at 0 dB, V
DD
= 5 V.
Relative to 1004 Hz, minimum
gain < GX < maximum gain,
VF
X
I = 0 dBm0 signal, path gain
set to 0 dB:
f = 16.67 Hz
f = 40 Hz
f = 50 Hz
f = 60 Hz
f = 200 Hz
f = 300 Hz to 3000 Hz
f = 3140 Hz
f = 3380 Hz
f = 3860 Hz
f = 4600 Hz and above
—
—
2.80
5.29
—
—
Vp-p
Vp-p
Absolute Levels
GAL
—
—
—
—
87.5
2.63
—
—
—
—
3.2
5.28
m
Vp-p
Vp-p
Vp-p
Vp-p
Absolute Maximum Volt-
age Swings
Transmit Gain Absolute
Accuracy
GAL
GXA
—
0.25
0.35
±0.15
—
—
—
0.25
0.35
dB
dB
dB
Transmit Gain Variation
with Programmed Gain
GXAG
0.1
—
0.1
dB
Transmit Gain Variation
with Frequency, 600
Resistive Source
Impedance and Syn-
thesized Termination
Impedance
GXAF
—
—
—
—
1.8
0.125
0.57
0.735
—
—
50
40
40
55
0.5
±0.04
0.01
0.03
9.0
—
30
26
30
30
0
0.135
0.125
0.015
8.98
32
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB