ADS8371

SLAS390A − JUNE 2003 − REVISED DECEMBER 2003

www.ti.com

3

SPECIFICATIONS

TA = −40°C to 85°C, +VA = 5 V, +VBD = 3 V or 5 V, Vref = 4.096 V, fSAMPLE = 750 kHz (unless otherwise noted)

PARAMETER

TEST

ADS8371IB

ADS8371I

UNIT

PARAMETER

TEST

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

UNIT

Analog Input

Full-scale input voltage (see Note 1)

+IN − −IN

0

Vref

0

Vref

V

Absolute input voltage

+IN

−0.2

Vref + 0.2

−0.2

Vref + 0.2

V

Absolute input voltage

−IN

−0.2

0.2

−0.2

0.2

V

Input capacitance

45

45

pF

Input leakage current

1

1

nA

System Performance

Resolution

16

16

Bits

No missing codes

16

16

Bits

Integral linearity (see Notes 2 and 3)

−1.5

−0.8/0.9

1.5

−2.5

2.5

LSB

Differential linearity

−1

−0.4/0.6

1

−1

1.5

LSB

Offset error

−0.75

±0.25

0.75

−1

±0.5

1

mV

Gain error (see Note 4)

−0.075

0.075

−0.15

0.15

%FS

Noise

60

60

µV RMS

Power supply rejection ratio

At 3FFFFh

output code

75

75

dB

Sampling Dynamics

Conversion time

1.13

1.13

µs

Acquisition time

0.2

0.2

µs

Throughput rate

750

750

kHz

Aperture delay

4

4

ns

Aperture jitter

15

15

ps

Step response

150

150

ns

Over voltage recovery

150

150

ns

(1) Ideal input span, does not include gain or offset error.

(2) LSB means least significant bit

(3) This is endpoint INL, not best fit.

(4) Measured relative to an ideal full-scale input (+IN − −IN) of 4.096 V