TLC32044C Datasheet, PDF (22/39 Pages) Texas Instruments – VOICE-BAND ANALOG INTERFACE CIRCUITS

TLC32044C, TLC32044E, TLC32044I, TLC32044M, TLC32045C, TLC32045I
VOICE-BAND ANALOG INTERFACE CIRCUITS
SLAS017F – MARCH 1988 – REVISED MAY 1995
D/A channel signal-to-distortion ratio (see Note 7)
PARAMETER
TEST CONDITIONS MIN MAX UNIT
VI = – 6 dB to 0 dB
58
VI = – 12 dB to – 6 dB
58
VI = – 18 dB to – 12 dB
56
D/A channel signal-to-distortion ratio, TLC32044C, TLC32044E, TLC32044I,
TLC32044M
VI = – 24 dB to – 18 dB
50
VI = – 30 dB to – 24 dB
44
VI = – 36 dB to – 30 dB
38
VI = – 42 dB to – 36 dB
32
VI = – 48 dB to – 42 dB
26
VI = – 54 dB to – 48 dB
20
dB
VI = – 6 dB to 0 dB
55
VI = – 12 dB to – 6 dB
55
VI = – 18 dB to – 12 dB
53
VI = – 24 dB to – 18 dB
47
D/A channel signal-to-distortion ratio, TLC32045C, TLC32045I
VI = – 30 dB to – 24 dB
41
VI = – 36 dB to – 30 dB
35
VI = – 42 dB to – 36 dB
29
VI = – 48 dB to – 42 dB
23
VI = – 54 dB to – 48 dB
17
NOTE 7: The test condition VI is a 1-kHz input signal with an 8-kHz conversion rate (0 dB relative to Vref). The load impedance for the DAC is
600 Ω (300 Ω for TLC32044M).
gain and dynamic range
PARAMETER
TEST CONDITIONS
Absolute transmit gain tracking error while transmitting
into 600 Ω
– 48-dB to 0-dB signal range,
See Note 8
Absolute transmit gain tracking error while transmitting – 48-dB to 0-dB signal range, TA = 25°C,
into 300 Ω, TLC32044M
See Note 8
MIN TYP† MAX UNIT
± 0.05 ± 0.15 dB
± 0.05 ± 0.25 dB
Absolute transmit gain tracking error while transmitting
into 300 Ω, TLC32044M
Absolute receive gain tracking error
Absolute receive gain tracking error, TLC32044M
– 48-dB to 0-dB signal range,
TA = – 55°C to 125°C,
– 48-dB to 0-dB signal range,
– 48-dB to 0-dB signal range,
See Note 8
See Note 8
See Note 8
TA = 25°C,
± 0.4 dB
± 0.05 ± 0.15 dB
± 0.05 ± 0.25 dB
Absolute receive gain tracking error, TLC32044M
Absolute gain of the A/D channel
– 48-dB to 0-dB signal range,
TA = – 55°C to 125°C,
See Note 8
Signal input is a – 0.5-dB,
1-kHz sinewave
Absolute gain of the D/A channel
Signal input is a 0-dB,
1-kHz sinewave
† _{All typical values are at TA = 25°C.}
NOTE 8: Gain tracking is relative to the absolute gain at 1 kHz and 0 dB (0 dB relative to Vref).
± 0.4 dB
0.2
dB
– 0.3
22
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