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

9

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TLC3574I N 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

±0.8

1.5

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

±1.8

LSB

ED

Differential linearity error

±0.8

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

75

78

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

−75

dB

SNR

Signal-to-noise ratio

fi = 20 kHz

78

80

dB

SNR

Signal-to-noise ratio

fi = 100 kHz

76

dB

ENOB

Effective number of bits

fi = 20 kHz

12.2

12.7

Bits

ENOB

Effective number of bits

fi = 100 kHz

12.2

Bits

SFDR

Spurious free dynamic range

fi = 20 kHz

78

83

dB

SFDR

Spurious free dynamic range

fi = 100 kHz

75

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.