AD7780 Просмотр технического описания (PDF) - Analog Devices

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AD7780

24-Bit, Pin-Programmable, Ultralow Power Sigma-Delta ADC

Analog Devices 

AD7780

Parameter

LOGIC INPUTS

SCLK, FILTER, GAIN, PDRST2

Input Low Voltage, VINL

Input High Voltage, VINH

SCLK (Schmitt-Triggered Input)

Hysteresis

Input Currents

Input Capacitance

LOGIC OUTPUT (DOUT/RDY)

Output High Voltage, VOH2

Output Low Voltage, VOL2

Floating-State Leakage Current

Floating-State Output Capacitance

Data Output Coding

POWER REQUIREMENTS3

Power Supply Voltage

AVDD to GND

DVDD to GND

Power Supply Currents

IDD Current

Min

1.8

2.4

DVDD − 0.6

4

2.7

2.7

IDD (Power-Down/Reset Mode)

Typ

Max

0.4

0.8

100

140

±2

10

0.4

0.4

±2

10

Offset binary

5.25

5.25

115

130

160

330

420

500

10

Unit

V

V

V

V

mV

mV

μA

pF

V

V

V

V

μA

pF

V

V

μA

μA

μA

μA

μA

1 Temperature range is −40°C to +105°C.

2 This specification is not production tested but is supported by characterization data at initial product release.

3 Digital inputs are equal to DVDD or GND.

Test Conditions/Comments

DVDD = 3 V

DVDD = 5 V

DVDD = 3 V

DVDD = 5 V

DVDD = 3 V

DVDD = 5 V

VIN = DVDD or GND

All digital inputs

DVDD = 3 V, ISOURCE = 100 μA

DVDD = 5 V, ISOURCE = 200 μA

DVDD = 3 V, ISINK = 100 μA

DVDD = 5 V, ISINK = 1.6 mA

Gain = 1, AVDD = 3 V

Gain = 1, AVDD = 5 V

Gain = 128, AVDD = 3 V

Gain = 128, AVDD = 5 V

Rev. A | Page 4 of 16

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