參數(shù)資料
型號： TLC320AD50IPT
廠商： Texas Instruments, Inc.
英文描述： SIGMA-DELTA ANALOG INTERFACE CIRCUITS WITH MASTER-SLAVE FUNCTION
中文描述： sigma - delta模擬接口，具有大師電路，從功能
文件頁數(shù)： 42/84頁
文件大?。?/td> 447K
代理商： TLC320AD50IPT
3–3
3.5.2
ADC Channel Input, V
DD
= 5 V, Input Amplifier Gain = 0 dB (Unless Otherwise
Noted)
PARAMETER
TEST CONDITIONS
Single-ended
MIN
TYP
MAX
UNIT
V
VI(PP)
Peak to peak input voltage (see Note 4)
Peak-to-peak input voltage (see Note 4)
3
Differential
6
V
ADC converter offset error
Band-pass filter selected
10
30
mV
CMRR
Common-mode rejection ratio at IN+, IN–,
AUX IN+, AUX IN– (see Note 5)
55
dB
ri
Input resistance at IN+, IN–, AUX IN+,
AUX IN–
100
k
Squelch
DS03, DS02 = 0 in
register 4
60
dB
All typical values are at VDD = 5 V and TA = 25
°
C.
NOTES:
4. The differential range corresponds to the full-scale digital output.
5. Common-mode rejection ratio is the ratio of the ADC converter offset error with no signal and the ADC
converter offset error with a common-mode nonzero signal applied to either IN+ and IN– together or
AUX IN+ and AUX IN– together.
3.5.3
ADC Channel Signal-to-Distortion Ratio, V
DD
= 5 V, f
s
= 8 kHz (Unless
Otherwise Noted)
PARAMETER
TEST CONDITIONS
AV = 0 dB
MIN
64
AV = 6 dB
MIN
—
AV = 12 dB
MIN
—
UNIT
MAX
MAX
MAX
VI = –6 dB to –1 dB
VI = –12 dB to –6 dB
VI = –18 dB to –12 dB
VI = –24 dB to –18 dB
VI = –30 dB to –24 dB
VI = –36 dB to –30 dB
VI = –42 dB to –36 dB
VI = –48 dB to –42 dB
59
64
—
56
59
64
ADC channel signal-to-
distortion ratio
(see Note 6)
50
56
59
dB
44
50
56
38
44
50
32
26
38
32
44
38
NOTE 6: The analog-input test signal is a 1020-Hz sine wave with 0 dB = 6 V peak to peak as the reference level for
the analog-input signal.
3.5.4
DAC Channel Filter Transfer Function, FCLK = 144 kHz, f
s
= 9.6 kHz, V
DD
= 5 V
PARAMETER
TEST CONDITIONS
fi < 200 Hz
fi = 200 Hz
fi = 300 Hz to 3 kHz
fi = 3.3 kHz
fi = 3.4 kHz
fi = 4 kHz
fi
≥
4.6 kHz
MIN
MAX
0.15
UNIT
–0.5
0.2
–0.15
0.2
Gain relative to gain at fi = 1020 Hz (see Note 7)
–0.35
0.03
dB
–1
–0.1
–14
–32
NOTE 7: The input signal is the digital equivalent of a 1020-Hz sine wave (digital full scale = 0 dB). The nominal
differential DAC channel output with this input condition is 6 V peak to peak.
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