Datasheet

   
      
    ± 
SLAS262C − OCTOBER 2000 − REVISED MAY 2003
7
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AC/DC performance over recommended operating free-air temperature range, single-ended input,
normal long sampling, 200 KSPS, AV
DD
= 5 V, V
REFP
= 4 V, V
REFM
= 0 V, SCLK frequency = 25 MHz,
fixed channel at CONV mode 00, analog input signal source resistance = 25 Ω (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
E
L
Integral linearity error See Note 3 −1.5 ±1 1.5 LSB
E
D
Differential linearity error −1 ±0.5 1 LSB
E
O
Bipolar zero error See Note 4 −0.30 ±0.08 0.36 %FS
E
FS(+)
Positive full scale error See Note 4 −0.55 ±0.04 0.61 %FS
E
FS(−)
Negative full scale error See Note 4 −0.30 ±0.13 0.79 %FS
DC Accuracy—Normal Short Sampling
E
L
Integral linearity error See Note 3 ±1 LSB
E
D
Differential linearity error ±0.5 LSB
E
O
Bipolar zero error See Note 4 ±0.08 %FS
E
FS(+)
Positive full scale error See Note 4 ±0.04 %FS
E
FS(−)
Negative full scale error See Note 4 ±0.13 %FS
AC Accuracy (see Note 3)—Normal Long Sampling
SINAD
Signal-to-noise ratio + distortion
f
i
= 20 kHz 76 79
dB
SINAD
Signal-to-noise ratio + distortion
f
i
= 100 kHz 75
dB
THD
Total harmonic distortion
f
i
= 20 kHz −82 −77
dB
THD
Total harmonic distortion
f
i
= 100 kHz −78
dB
SNR
Signal-to-noise ratio
f
i
= 20 kHz 78 80
dB
SNR
Signal-to-noise ratio
f
i
= 100 kHz 78
dB
ENOB
Effective number of bits
f
i
= 20 kHz 12.3 12.8
Bits
ENOB
Effective number of bits
f
i
= 100 kHz 12.2
Bits
SFDR
Spurious free dynamic range
f
i
= 20 kHz 78 84
dB
SFDR
Spurious free dynamic range
f
i
= 100 kHz 79
dB
Channel-to-channel isolation
Fixed channel in conversion mode 00, f
i
= 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 T
A
= 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.