TLC32044C Datasheet, PDF (26/39 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
operating characteristics over recommended operating free-air temperature range, V_CC+ = 5 V,
V_CC– = –5 V, V_DD = 5 V
noise (measurement includes low-pass and bandpass switched-capacitor filters)
PARAMETER
TEST CONDITIONS
MIN
TLC32044C, E, I
TLC32044M
TLC32045C, I
With sin x / x correction
Transmit noise
TLC32044C, E, I
TLC32044M
TLC32045C, I
Without sin x / x correction
DX input = 00 00 00 00 00 00 00,
constant input code
TLC32044C, E, I
TLC32045C, I
TLC32044C, E, I, M
Receive noise
(see Note 10)
TLC32045C, I
TLC32044C, E, I, M
Inputs grounded, gain = 1
TLC32045C, I
† _{All typical values are at TA = 25°C.}
NOTE 10: The noise is computed by statistically evaluating the digital output of the A/D converter.
TYP†
325
325
18
24
300
18
24
MAX UNIT
550 µV rms
575 µV rms
600 µV rms
425 µV rms
450 µV rms
450 µV rms
dBrncO
dBrncO
500 µV rms
530 µV rms
dBrncO
dBrncO
timing requirements
serial port recommended input signals
MIN
MAX UNIT
Master clock cycle time
tc(MCLK) _{Master clock cycle time, TLC32044M}
95
ns
100
192 ns
tr(MCLK)
tf(MCLK)
Master clock rise time
Master clock fall time
Master clock duty cycle
25%
10 ns
10 ns
75%
Master clock duty cycle, TLC32044M
42%
58%
RESET pulse duration (see Note 11)
800
ns
tsu(DX)
DX setup time before SCLK↓
DX setup time before SCLK↓, TLC32044M
20
ns
28
ns
th(DX)
DX hold time after SCLK↓
tc(SCLK)/4
ns
NOTE 11: RESET pulse duration is the amount of time that the reset pin is held below 0.8 V after the power supplies have reached their
recommended values.
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