參數(shù)資料
型號(hào): TLC3574IDW
廠商: TEXAS INSTRUMENTS INC
元件分類: ADC
英文描述: 4-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
封裝: GREEN, PLASTIC, SOP-20
文件頁(yè)數(shù): 47/49頁(yè)
文件大小: 1137K
代理商: TLC3574IDW
TLC3574, TLC3578, TLC2574, TLC2578
5V ANALOG, 3/5V DIGITAL, 14/12BIT, 200KSPS, 4/8CHANNEL
SERIAL ANALOGTODIGITAL CONVERTERS WITH ±10V INPUTS
SLAS262C OCTOBER 2000 REVISED MAY 2003
7
WWW.TI.COM
AC/DC performance over recommended operating free-air temperature range, single-ended input,
normal long sampling, 200 KSPS, AVDD = 5 V, VREFP = 4 V, VREFM = 0 V, SCLK frequency = 25 MHz,
fixed channel at CONV mode 00, analog input signal source resistance = 25
(unless otherwise
noted)
TLC3574/78 DW and PW package device AC/DC performance
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
DC Accuracy—Normal Long Sampling
EL
Integral linearity error
See Note 3
1.5
±1
1.5
LSB
ED
Differential linearity error
1
±0.5
1
LSB
EO
Bipolar zero error
See Note 4
0.30
±0.08
0.36
%FS
EFS(+)
Positive full scale error
See Note 4
0.55
±0.04
0.61
%FS
EFS()
Negative full scale error
See Note 4
0.30
±0.13
0.79
%FS
DC Accuracy—Normal Short Sampling
EL
Integral linearity error
See Note 3
±1
LSB
ED
Differential linearity error
±0.5
LSB
EO
Bipolar zero error
See Note 4
±0.08
%FS
EFS(+)
Positive full scale error
See Note 4
±0.04
%FS
EFS()
Negative full scale error
See Note 4
±0.13
%FS
AC Accuracy (see Note 3)—Normal Long Sampling
SINAD
Signal-to-noise ratio + distortion
fi = 20 kHz
76
79
dB
SINAD
Signal-to-noise ratio + distortion
fi = 100 kHz
75
dB
THD
Total harmonic distortion
fi = 20 kHz
82
77
dB
THD
Total harmonic distortion
fi = 100 kHz
78
dB
SNR
Signal-to-noise ratio
fi = 20 kHz
78
80
dB
SNR
Signal-to-noise ratio
fi = 100 kHz
78
dB
ENOB
Effective number of bits
fi = 20 kHz
12.3
12.8
Bits
ENOB
Effective number of bits
fi = 100 kHz
12.2
Bits
SFDR
Spurious free dynamic range
fi = 20 kHz
78
84
dB
SFDR
Spurious free dynamic range
fi = 100 kHz
79
dB
Channel-to-channel isolation
Fixed channel in conversion mode 00, fi = 35 kHz,
See Notes 2 and 5
81
dB
Analog input bandwidth
Full power bandwidth, 3 dB
1
MHz
Analog input bandwidth
Full power bandwidth, 1 dB
700
kHz
All typical values are at TA = 25°C.
NOTES:
2. This is for a fixed channel in conversion mode 00 or 01. When switching the channels, additional multiplexer setting time is required
to overcome the memory effect of the charge redistribution DAC.
3. Linear error is the maximum deviation from the best fit straight line through the A/D transfer characteristics.
4. Bipolar zero error is the difference between 10000000000000 and the converted output for zero input voltage; positive full-scale error
is the difference between 11111111111111 and the converted output for positive full-scale input voltage (10 V); negative full-scale
error is the difference between 00000000000000 and the converted output for negative full-scale input voltage (10 V).
5. It is measured by applying a full-scale of 35 kHz signal to other channels and determining how much the signal is attenuated in the
channel of interest. The converter samples this examined channel continuously. The channel-to-channel isolation is degraded if the
converter samples different channels alternately.
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