Datasheet > AD4685

AD4685

更新时间： 2023-12-20 18:44:48

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
32页	1427K
描述
500 kSPS、4通道16位双路同步采样SAR ADC

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AD4685 数据手册

Data Sheet

AD4684/AD4685

SPECIFICATIONS

Table 1. Specifications (Continued)

Parameter

Test Conditions/Comments

Min

Typ

Max

Unit

REFERENCE INPUT AND OUTPUT

V_REFInput

External reference

Voltage Range

2.49

3.4

Current

0.47

2.5

0.51

2.502

2.505

V_REFOutput Voltage

At 25°C

2.498

2.496

−40°C to +125°C

V_REFTemperature Coefficient

V_REFNoise

ppm/°C

µV rms

DIGITAL INPUTS (SCLK, SDI, CS)

Logic Levels

Input Voltage

Low (V_IL)

0.2 × V_LOGIC

High (V_IH

)

0.8 × V_LOGIC

Input Current

Low (I_IL)

−1

µA

High (I_IH

)

DIGITAL OUTPUTS (SDOA, SDOB/ALERT)

Output Voltage

Low (V_OL

)

Sink current (I_SINK) = 300 µA

0.4

±1

High (V_OH

)

Source current (I_SOURCE) = −300 µA

V_LOGIC− 0.3

Floating State

Leakage Current

Output Capacitance

POWER SUPPLIES

V_CC

µA

3.0

3.3

3.6

External reference = 3.3 V

3.2

V_LOGIC

1.65

V_CCCurrent (I_VCC

)

Normal Mode (Operational)

AD4684, 1 MSPS

AD4685, 500 kSPS

8.5

µA

Normal Mode (Static)

Shutdown Mode

2.2

100

200

V_LOGICCurrent (I_VLOGIC

)

Normal Mode (Operational)

Normal Mode (Static)

SDOA and SDOB at 0x1FFF

0.8

200

Shutdown Mode

Power Dissipation

Total Power (P_TOTAL) (Operational)

V_CCPower (P_VCC

)

Normal Mode (Operational)

AD4684, 1 MSPS

AD4685, 500 kSPS

μW

Normal Mode (Static)

Shutdown Mode

7.3

330

10.8

720

V_LOGICPower (P_VLOGIC

)

Normal Mode (Operational)

Normal Mode (Static)

Shutdown Mode

SDOA and SDOB at 0x1FFF

2.6

3.6

720

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