3–6
3.4
Operating Characteristics Over Recommended Operating Free-Air
Temperature Range, VCC+ = 5 V, VCC– = –5 V, VDD = 5 V
3.4.1
Receive and Transmit Noise (measurement includes low-pass and band-pass
switched-capacitor filters)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Broadband with (sin x)/x
250
500
Broadband without (sin x)/x
200
450
0 to 30 kHz with (sin x)/x
200
400
0 to 30 kHz without (sin x)/x
200
400
Tit
0 to 3.4 kHz with (sin x)/x
DX i
t
00000000000000
180
300
Transmit
noise
0 to 3.4 kHz without (sin x)/x
DX input = 00000000000000,
Constant input code
160
300
Vrms
noise
0 to 6.8 kHz with (sin x)/x
(wide-band operation with 7.2 kHz
roll-off)
Constant in ut code
180
350
0 to 6.8 kHz without (sin x)/x
(wide-band operation with 7.2 kHz
roll-off)
160
350
Receive noise (see Note 10)
Inputs grounded
Gain = 1
300
500
Vrms
Receive noise (see Note 10)
In uts grounded,
Gain = 1
18
dBrnc0
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.
3.5
Timing Requirements
3.5.1
Serial Port Recommended Input Signals, TLC32046C and TLC32046I
PARAMETER
MIN
MAX
UNIT
tc(MCLK)
Master clock cycle time
95
ns
tr(MCLK)
Master clock rise time
10
ns
tf(MCLK)
Master clock fall time
10
ns
Master clock duty cycle
25%
75%
RESET pulse duration (see Note 11)
800
ns
tsu(DX)
DX setup time before SCLK
↓
20
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 is held below 0.8 V after the power supplies have
reached their recommended values.
3.5.2
Serial Port Recommended Input Signals, TLC32046M
PARAMETER
MIN
TYP
MAX
UNIT
tc(MCLK)
Master clock cycle time
95
ns
tr(MCLK)
Master clock rise time
10
ns
tf(MCLK)
Master clock fall time
10
ns
Master clock duty cycle
50%
RESET pulse duration (see Note 11)
800
ns
tsu(DX)
DX setup time before SCLK
↓
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 is held below 0.8 V after the power supplies have
reached their recommended values.