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ELECTRICAL CHARACTERISTICS (CONTINUED)

THS1215

SLAS292A – MARCH 2001 – REVISED MARCH 2004

over recommended operating conditions (AV

internal reference, T

REFT, REFB REFERENCE VOLTAGE (all supplies = 3.3 V)

PARAMETER

TEST CONDITION

MIN

TYP

MAX

UNIT

Upper reference voltage

2.15

V

1.15

V

0.95

1

1.05

V

–5%

5%

EXTERNAL REFERENCE

2

2.5

V

1.05

1.3

V

0.75

1.05

V

9

k

Ω

INTERNAL EXTERNAL REFERENCE

0.1

µF

0.1

µF

10

µF

DC ACCURACY (LINEARITY)

Number of missing codes

All modes

0

codes

DNL

Differential nonlinearity

All modes

±0.43

±0.9

LSB

INL

Integral nonlinearity

All modes

±0.6

±2.5

LSB

Offset error

All modes

1.4

2.2

%FSR

Gain error

All modes

2.2

3.5

%FSR

DYNAMIC PERFORMANCE (all supplies = 3.3 V)

ENOB

Effective number of bits

10.7

11.1

Bits

THD

Total harmonic distortion

–81.2

dB

SNR

Signal-to-noise ratio

67.4

68.9

dB

SINA

Signal-to-noise + distortion

66

68.6

dB

D

SFDR

Spurious free dynamic range

72

81.7

dB

Analog input bandwidth

180

MHz

Differential phase, DP

0.12

degree

Differential gain

0.01%

TIMING (all supplies = 3.3 V)

5

15

MHz

Clock duty cycle

45%

50%

55%

Output delay time

6

19

ns

Delay time, output disable to Hi-Z output

3.2

ns

Delay time, output enable to output valid

16

19

ns

Latency

4

5

cycles

(1)

The internal reference voltage is not intended for use driving off chip.

(2)

The clock frequency may be extended down to 5 MHz without degradation in specified performance.

6