AD7865 查看數據表（PDF） - Analog Devices

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AD7865

Four-Channel, Simultaneous Sampling, Fast, 14-Bit ADC

Analog Devices 

AD7865

Parameter

A, Y Versions1 B Version Unit

Test Conditions/Comments

REFERENCE INPUT/OUTPUT

VREF IN Input Voltage Range

VREF IN Input Capacitance6

VREF OUT Output Voltage

VREF OUT Error @ 25°C

VREF OUT Error TMIN to TMAX

VREF OUT Temperature Coefficient

VREF OUT Output Impedance

LOGIC INPUTS

Input High Voltage, VINH

Input Low Voltage, VINL

Input Current, IIN

Input Capacitance, CIN6

LOGIC OUTPUTS

Output High Voltage, VOH

Output Low Voltage, VOL

DB13–DB0

High Impedance

Leakage Current

Capacitance6

Output Coding

AD7865-1, AD7865-3

AD7865-2

2.375/2.625

10

2.5

± 10

± 20

25

6

2.4

0.8

± 10

10

4.0

0.4

2.375/2.625

10

2.5

± 10

± 20

25

6

VMIN/VMAX

pF max

V nom

mV max

mV max

ppm/°C typ

kΩ typ

2.5 V ± 5%

See Reference Section

2.4

V min

VDD = 5 V ± 5%

0.8

V max

VDD = 5 V ± 5%

± 10

µA max

10

pF max

4.0

V min

ISOURCE = 400 µA

0.4

V max

ISINK = 1.6 mA

± 10

± 10

10

10

Two’s Complement

Straight (Natural) Binary

µA max

pF max

CONVERSION RATE

Conversion Time

2.4

Track/Hold Acquisition Time2, 3

0.35

Throughput Time

350

100

2.4

µs max

For Single Channel

0.35

µs max

350

kSPS max For Single Channel

100

kSPS max For All Four Channels

POWER REQUIREMENTS

VDD

IDD

AD7865-1

Normal Mode

5

5

V nom

± 5% for Specified Performance

Typically 23 mA, Logic Inputs = 0 V or VDD

32

32

mA max

Standby Mode

20

20

µA max

AD7865-2

Normal Mode

Typically 20 mA, Logic Inputs = 0 V or VDD

30

30

mA max

Standby Mode

20

20

µA max

AD7865-3

Normal Mode

Typically 23 mA, Logic Inputs = 0 V or VDD

32

32

mA max

Standby Mode

20

20

µA max

Power Dissipation

AD7865-1

Normal Mode

Standby Mode

160

160

mW max

Typically 115 mW. VDD = 5 V

100

100

µW max

Typically 15 µW

AD7865-2

Normal Mode

Standby Mode

150

150

mW max

Typically 100 mW. VDD = 5 V

100

100

µW max

Typically 15 µW

AD7865-3

Normal Mode

Standby Mode

160

160

mW max

Typically 115 mW. VDD = 5 V

100

100

µW max

Typically 15 µW

NOTES

1Temperature ranges are as follows : A, B Versions: –40°C to +85°C, Y Version: –40°C to +105°C.

2Performance measured through full channel (SHA and ADC).

3See Terminology.

4Total Harmonic Distortion and Peak Harmonic or Spurious Noise are specified at –83 dBs for the AD7865-2.

5Measured between any two channels with the other two channels grounded.

6Sample tested @ 25°C to ensure compliance.

Specifications subject to change without notice.

REV. B

–3–

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