TLC32046C Datasheet, PDF (34/57 Pages) Texas Instruments – Wide-Band Analog Interface Circuit

3.3.7 Receive Channel Signal-to-Distortion Ratio (see Note 7)
PARAMETER
TEST CONDITIONS
Av = 1‡
MIN MAX
Av = 2‡
MIN MAX
Av = 4‡
UNIT
MIN MAX
VI = – 6 dB to – 0.1 dB
58
§
§
VI = – 12 dB to – 6 dB
58
58
§
VI = – 18 dB to – 12 dB
56
58
58
VI = – 24 dB to – 18 dB
50
56
58
A/D channel signal-to-
distortion ratio
VI = – 30 dB to – 24 dB
44
50
56
dB
VI = – 36 dB to – 30 dB
38
44
50
VI = – 42 dB to – 36 dB
32
38
44
VI = – 48 dB to – 42 dB
26
32
38
VI = – 54 dB to – 48 dB
20
26
32
‡ _{Av is the programmable gain of the input amplifier.}
§ _{Measurements under these conditions are unreliable due to overrange and signal clipping.}
NOTE 7: The test condition is a 1-kHz input signal with a 16-kHz conversion rate. The load impedance for the DAC is
600 Ω. Input and output voltages are referred to Vref.
3.3.8 Transmit Channel Signal-to-Distortion Ratio (see Note 7)
PARAMETER
TEST CONDITIONS
MIN MAX UNIT
VI = – 6 dB to – 0.1 dB
58
VI = – 12 dB to – 6 dB
58
VI = – 18 dB to – 12 dB
56
VI = – 24 dB to – 18 dB
50
D/A channel signal-to-distortion ratio
VI = – 30 dB to – 24 dB
44
dB
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
NOTE 7: The test condition is a 1-kHz input signal with a 16-kHz conversion rate. The load impedance for the DAC is
600 Ω. Input and output voltages are referred to Vref.
3.3.9 Receive and Transmit Gain and Dynamic Range (see Note 8)
PARAMETER
TEST CONDITIONS
MIN TYP† MAX UNIT
Transmit gain tracking error C, I VO = – 48 dB to 0 dB signal range
Receive gain tracking error C, I VI = – 48 dB to 0 dB signal range
± 0.05 ± 0.15 dB
± 0.05 ± 0.15 dB
Transmit gain tracking error M
Receive gain tracking error M
VO = – 48 dB to 0 dB signal range,
TA = 25°C
VI = – 48 dB to 0 dB signal range,
TA = 25°C
± 0.05 ± 0.25 dB
± 0.05 ± 0.25 dB
Transmit gain tracking error M
Receive gain tracking error M
VO = – 48 dB to 0 dB signal range,
TA = – 55°C TO 125°C
± 0.4 dB
± 0.4 dB
NOTE 8: Gain tracking is relative to the absolute gain at 1 kHz and 0 dB (0 dB relative to Vref).
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