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AD7782
(Rev.:Rev0)

Read Only, Pin Configured 24-Bit Σ-Δ ADC

Analog Devices 

AD7782

Parameter

AD7782B

Unit

Test Conditions

LOGIC INPUTS (continued)

XTAL1 Only2

VINL, Input Low Voltage

0.8

VINH, Input High Voltage

3.5

VINL, Input Low Voltage

0.4

VINH, Input High Voltage

2.5

Input Currents

±1

–70

Input Capacitance

10

V max

V min

V max

V min

µA max

µA max

pF typ

VDD = 5 V

VDD = 5 V

VDD = 3 V

VDD = 3 V

VIN = VDD

VIN = GND, Typically –40 µA at 5 V and –20 µA at 3 V

All Digital Inputs

LOGIC OUTPUTS (Excluding XTAL2)

VOH, Output High Voltage2

VOL, Output Low Voltage2

VOH, Output High Voltage2

VOL, Output Low Voltage2

Floating-State Leakage Current

Floating-State Output Capacitance

Data Output Coding

VDD – 0.6

0.4

4

0.4

± 10

± 10

Offset Binary

V min

V max

V min

V max

µA max

pF typ

VDD = 3 V, ISOURCE = 100 µA

VDD = 3 V, ISINK = 100 µA

VDD = 5 V, ISOURCE = 200 µA

VDD = 5 V, ISINK = 1.6 mA

START-UP TIME

From Power-On

300

ms typ

POWER REQUIREMENTS

Power Supply Voltage

VDD – GND

Power Supply Currents

IDD Current (Normal Mode)4

IDD (Power-Down Mode, CS = 1)

2.7/3.6

4.75/5.25

1.5

1.7

9

24

V min/max

V min/max

mA max

mA max

µA max

µA max

VDD = 3 V nom

VDD = 5 V nom

VDD = 3 V, 1.3 mA typ

VDD = 5 V, 1.5 mA typ

VDD = 3 V, 6 µA typ

VDD = 5 V, 20 µA typ

NOTES

1Temperature Range –40°C to +85°C.

2Guaranteed by design and/or characterization data on production release.

3When a 28.8 kHz crystal is used, normal mode rejection is improved so that the rejection equals 75 dB at 50 ± 1 Hz and equals 66 dB at 60 ± 1 Hz.

4Normal Mode refers to the case where the ADC is running.

Specifications subject to change without notice.

REV. 0

–3–

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