TLC3574_14 Datasheet, PDF (9/50 Pages) Texas Instruments – 14-Bit Resolution for TLC3574/78, 12-Bit for TLC2574/2578

TLC3574, TLC3578, TLC2574, TLC2578
5ĆV ANALOG, 3Ć/5ĆV DIGITAL, 14Ć/12ĆBIT, 200ĆKSPS, 4Ć/8ĆCHANNEL
SERIAL ANALOGĆTOĆDIGITAL CONVERTERS WITH ±10ĆV INPUTS
SLAS262C − OCTOBER 2000 − REVISED MAY 2003
TLC3574I N package device AC/DC performance
PARAMETER
TEST CONDITIONS
MIN TYP† MAX UNIT
DC Accuracy—Normal Long Sampling
EL
Integral linearity error
ED
Differential linearity error
EO
Bipolar zero error
EFS(+) Positive full scale error
EFS(−) Negative full scale error
DC Accuracy—Normal Short Sampling
See Note 3
See Note 4
See Note 4
See Note 4
−1.5
±1 1.5 LSB
−1 ±0.8 1.5 LSB
−0.30 ±0.08 0.36 %FS
−0.55 ±0.04 0.61 %FS
−0.30 ±0.13 0.79 %FS
EL
ED
EO
EFS(+)
EFS(−)
Integral linearity error
Differential linearity error
Bipolar zero error
Positive full-scale error
Negative full-scale error
See Note 3
See Note 4
See Note 4
See Note 4
±1.8
±0.8
±0.08
±0.04
±0.13
LSB
LSB
%FS
%FS
%FS
AC Accuracy (see Note 3)—Normal Long Sampling
SINAD Signal-to-noise ratio + distortion
THD
Total harmonic distortion
SNR
Signal-to-noise ratio
ENOB Effective number of bits
SFDR Spurious free dynamic range
Channel-to-channel isolation
fi = 20 kHz
fi = 100 kHz
fi = 20 kHz
fi = 100 kHz
fi = 20 kHz
fi = 100 kHz
fi = 20 kHz
fi = 100 kHz
fi = 20 kHz
fi = 100 kHz
Fixed channel in conversion mode 00, fi = 35 kHz,
See Notes 2 and 5
75
78
dB
75
−82 −77
dB
−75
78
80
dB
76
12.2 12.7
Bits
12.2
78
83
dB
75
81
dB
Analog input bandwidth
Full power bandwidth, −3 dB
Full power bandwidth, −1 dB
1
MHz
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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