TLC32044C_11 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
V_I = − 6 dB to 0 dB
58
V_I = − 12 dB to − 6 dB
58
V_I = − 18 dB to − 12 dB
56
D/A channel signal-to-distortion ratio, TLC32044C, TLC32044E, TLC32044I,
TLC32044M
V_I = − 24 dB to − 18 dB
50
V_I = − 30 dB to − 24 dB
44
V_I = − 36 dB to − 30 dB
38
V_I = − 42 dB to − 36 dB
32
V_I = − 48 dB to − 42 dB
26
V_I = − 54 dB to − 48 dB
20
dB
V_I = − 6 dB to 0 dB
55
V_I = − 12 dB to − 6 dB
55
V_I = − 18 dB to − 12 dB
53
V_I = − 24 dB to − 18 dB
47
D/A channel signal-to-distortion ratio, TLC32045C, TLC32045I
V_I = − 30 dB to − 24 dB
41
V_I = − 36 dB to − 30 dB
35
V_I = − 42 dB to − 36 dB
29
V_I = − 48 dB to − 42 dB
23
V_I = − 54 dB to − 48 dB
17
NOTE 7: The test condition V_I is a 1-kHz input signal with an 8-kHz conversion rate (0 dB relative to V_ref). 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
Absolute transmit gain tracking error while transmitting
into 300 Ω, TLC32044M
−48-dB to 0-dB signal range,
−48-dB to 0-dB signal range,
See Note 8
See Note 8
T_A = 25°C,
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,
T_A = − 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
T_A = 25°C,
Absolute receive gain tracking error, TLC32044M
−48-dB to 0-dB signal range,
T_A = − 55°C to 125°C,
See Note 8
Absolute gain of the A/D channel
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 V_ref).
MIN TYP^† MAX UNIT
± 0.05 ± 0.15 dB
± 0.05 ± 0.25 dB
± 0.4 dB
± 0.05 ± 0.15 dB
± 0.05 ± 0.25 dB
± 0.4 dB
0.2
dB
− 0.3
22
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