AD7858 データシートの表示（PDF） - Analog Devices

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AD7858

3 V to 5 V Single Supply, 200 kSPS 8-Channel, 12-Bit Sampling ADC

Analog Devices 

AD7858/AD7858L

ABSOLUTE MAXIMUM RATINGS1

(TA = +25°C unless otherwise noted)

AVDD to AGND . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V

DVDD to DGND . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V

AVDD to DVDD . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +0.3 V

Analog Input Voltage to AGND . . . . –0.3 V to AVDD + 0.3 V

Digital Input Voltage to DGND . . . . –0.3 V to DVDD + 0.3 V

Digital Output Voltage to DGND . . . –0.3 V to DVDD + 0.3 V

REFIN/REFOUT to AGND . . . . . . . . . –0.3 V to AVDD + 0.3 V

Input Current to Any Pin Except Supplies2 . . . . . . . ± 10 mA

Operating Temperature Range

Commercial (A, B Versions) . . . . . . . . . . . –40°C to +85°C

Storage Temperature Range . . . . . . . . . . . –65°C to +150°C

Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . +150°C

Plastic DIP Package, Power Dissipation . . . . . . . . . . 450 mW

θJA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . 105°C/W

θJC Thermal Impedance . . . . . . . . . . . . . . . . . . . . 34.7°C/W

Lead Temperature, (Soldering, 10 sec) . . . . . . . . . . +260°C

SOIC, SSOP Package, Power Dissipation . . . . . . . . . . 450 mW

θJA Thermal Impedance . . . 75°C/W (SOIC) 115°C/W (SSOP)

θJC Thermal Impedance . . . . 25°C/W (SOIC) 35°C/W (SSOP)

Lead Temperature, Soldering

Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . +215°C

Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . +220°C

NOTES

1Stresses above those listed under Absolute Maximum Ratings may cause perma-

nent damage to the device. This is a stress rating only; functional operation of the

device at these or any other conditions above those listed in the operational

sections of this specification is not implied. Exposure to absolute maximum rating

conditions for extended periods may affect device reliability.

2Transient currents of up to 100 mA will not cause SCR latch-up.

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily

accumulate on the human body and test equipment and can discharge without detection. Although

the AD7858/AD7858L features proprietary ESD protection circuitry, permanent damage may

occur on devices subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions

are recommended to avoid performance degradation or loss of functionality.

WARNING!

ESD SENSITIVE DEVICE

ORDERING GUIDE

Model

Linearity Power

Error Dissipation Package

(LSB)1 (mW)

Options2

AD7858AN

±1

20

AD7858BN

± 1/2

20

AD7858LAN3

±1

6.85

AD7858LBN3

±1

6.85

AD7858AR

±1

20

AD7858BR

± 1/2

20

AD7858LAR3

±1

6.85

AD7858LBR3

±1

6.85

AD7858LARS3

±1

6.85

EVAL-AD7858CB4

EVAL-CONTROL BOARD5

N-24

N-24

N-24

N-24

R-24

R-24

R-24

R-24

RS-24

NOTES

1Linearity error here refers to integral linearity error.

2N = Plastic DIP; R = SOIC; RS = SSOP.

3L signifies the low-power version.

4This can be used as a stand-alone evaluation board or in conjunction with the EVAL-

CONTROL BOARD for evaluation/demonstration purposes.

5This board is a complete unit allowing a PC to control and communicate with all

Analog Devices evaluation boards ending in the CB designators.

PIN CONFIGURATIONS

DIP, SOIC, AND SSOP

CONVST 1

24 SYNC

BUSY 2

SLEEP 3

23 SCLK

22 CLKIN

REFIN/REFOUT 4

AVDD 5

21 DIN

AD7858/

AD7858L 20 DOUT

AGND 6 TOP VIEW 19 DGND

CREF1 7 (Not to Scale) 18 DVDD

CREF2 8

17 CAL

AIN1 9

16 AIN8

AIN2 10

AIN3 11

15 AIN7

14 AIN6

AIN4 12

13 AIN5

–6–

REV. B

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