AD5122A 查看數據表（PDF） - Analog Devices

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AD5122A

Dual Channel, 128-/256-Position, I2C, Nonvolatile Digital Potentiometer

Analog Devices 

Data Sheet

Parameter

RESISTOR TERMINALS

Maximum Continuous Current

Terminal Voltage Range5

Capacitance A, Capacitance B3

Symbol

IA, IB, and IW

CA, CB

Capacitance W3

CW

Common-Mode Leakage Current3

DIGITAL INPUTS

Input Logic3

High

VINH

Low

Input Hysteresis3

Input Current3

Input Capacitance3

DIGITAL OUTPUTS

Output High Voltage3

Output Low Voltage3

VINL

VHYST

IIN

CIN

VOH

VOL

Three-State Leakage Current

Three-State Output Capacitance

POWER SUPPLIES

Single-Supply Power Range

Dual-Supply Power Range

Logic Supply Range

Positive Supply Current

IDD

Negative Supply Current

EEPROM Store Current3, 6

EEPROM Read Current3, 7

Logic Supply Current

Power Dissipation8

Power Supply Rejection Ratio

ISS

IDD_EEPROM_STORE

IDD_EEPROM_READ

ILOGIC

PDISS

PSR

Test Conditions/Comments Min

AD5122A/AD5142A

Typ1 Max

Unit

RAB = 10 kΩ

−6

+6

mA

RAB = 100 kΩ

−1.5

+1.5

mA

VSS

VDD

V

f = 1 MHz, measured to GND,

code = half scale

RAB = 10 kΩ

25

pF

RAB = 100 kΩ

12

pF

f = 1 MHz, measured to GND,

code = half scale

RAB = 10 kΩ

12

pF

RAB = 100 kΩ

5

pF

VA = VW = VB

−500

±15 +500

nA

VLOGIC = 1.8 V to 2.3 V

VLOGIC = 2.3 V to 5.5 V

RPULL-UP = 2.2 kΩ to VLOGIC

ISINK = 3 mA

ISINK = 6 mA, VLOGIC > 2.3 V

VSS = GND

Single supply, VSS = GND

Dual supply, VSS < GND

VIH = VLOGIC or VIL = GND

VDD = 5.5 V

VDD = 2.3 V

VIH = VLOGIC or VIL = GND

VIH = VLOGIC or VIL = GND

VIH = VLOGIC or VIL = GND

VIH = VLOGIC or VIL = GND

VIH = VLOGIC or VIL = GND

∆VDD/∆VSS = VDD ± 10%,

code = full scale

0.8 × VLOGIC

0.7 × VLOGIC

0.1 × VLOGIC

5

V

V

0.2 × VLOGIC V

V

±1

µA

pF

VLOGIC

V

0.4

V

0.6

V

−1

+1

µA

2

pF

2.3

±2.25

1.8

2.25

5.5

V

±2.75

V

VDD

V

VDD

V

0.7 5.5

µA

400

nA

−5.5

−0.7

µA

2

mA

320

µA

1

120

nA

3.5

µW

−66 −60

dB

Rev. A | Page 7 of 32

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