
TLC32044C, TLC32044E, TLC32044I, TLC32044M TLC32045C, TLC32045I
VOICE-BAND ANALOG INTERFACE CIRCUITS
SLAS017F – MARCH 1988 – REVISED MAY 1995
26
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
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
TYP
MAX
UNIT
TLC32044C, E, I
550
μ
V rms
μ
V rms
μ
V rms
μ
V rms
μ
V rms
μ
V rms
dBrncO
TLC32044M
With sin x/x correction
575
TLC32045C, I
600
Transmit noise
TLC32044C, E, I
DX input = 00000000000000,
constant input code
325
425
TLC32044M
325
450
TLC32045C, I
Without sin x/x correction
450
TLC32044C, E, I
18
TLC32045C, I
24
dBrncO
μ
V rms
μ
V rms
dBrncO
dBrncO
TLC32044C, E, I, M
300
500
Receive noise
(see Note 10)
TLC32045C, I
Inputs grounded gain = 1
Inputs grounded, gain = 1
530
TLC32044C, E, I, M
TLC32045C, I
18
24
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.
timing requirements
serial port recommended input signals
MIN
95
MAX
UNIT
ns
t(MCLK)
tc(MCLK)
Master clock cycle time
Master clock cycle time, TLC32044M
100
192
ns
tr(MCLK)
tf(MCLK)
Master clock rise time
10
ns
Master clock fall time
10
ns
Master clock duty cycle
25%
75%
Master clock duty cycle, TLC32044M
42%
58%
RESET pulse duration (see Note 11)
DX setup time before SCLK
↓
DX setup time before SCLK
↓
, TLC32044M
DX hold time after SCLK
↓
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.
800
ns
tsu(DX)
20
ns
28
ns
th(DX)
tc(SCLK)/4
ns