Multirange, +5V, 12-Bit DAS with

2-Wire Serial Interface

4

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ELECTRICAL CHARACTERISTICS (continued)

V

2.4

4.18

Input Voltage Range

V

REFADJ Threshold for

Buffer Disable

Normal or STANDBY power-down mode

k

Ω

10

Input Resistance

FULL power-down mode

5

M

Ω

External reference = 4.096V

CONDITIONS

FULL power-down mode

LSB

±0.1

±0.5

PSRR

Power-Supply Rejection Ratio

(Note 7)

µs

V

4.75

5.25

Supply Voltage

6.0

7.7

10.0

Conversion Time

120

220

Normal mode, bipolar ranges

700

850

Normal mode, unipolar ranges

UNITS

MIN

TYP

MAX

SYMBOL

PARAMETER

STANDBY power-down mode (Note 6)

mA

18

Supply Current

6

10

µA

Internal reference

±0.5

0.4

External Clock Frequency Range

MHz

Power-up (Note 8)

µs

200

Bandgap Reference

Start-Up Time

ksps

8

Throughput Rate

15

pF

(Note 4)

Input Leakage Current

±0.1

±10

µA

Input Low Threshold Voltage

0.8

V

Input High Threshold Voltage

2.4

V

Input Capacitance

0.2

V

Input Hysteresis

400

4.18V

µA

1

Input Current

FULL power-down mode

Normal, or STANDBY

power-down mode

To 0.1mV, REF bypass

capacitor fully discharged

ms

8

Reference Buffer Settling Time

POWER REQUIREMENTS

TIMING

REFERENCE INPUT (buffer disabled, reference input applied to REF)

DIGITAL INPUTS (SHDN, A2, A1, A0)

60