EVAL-AD7888CB(1999) Просмотр технического описания (PDF) - Analog Devices

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EVAL-AD7888CB
(Rev.:1999)

+2.7 V to +5.25 V, Micropower, 8-Channel, 125 kSPS, 12-Bit ADC in 16-Lead TSSOP

Analog Devices 

AD7888

Parameter

A Version1 B Version1

Units

Test Conditions/Comments

POWER REQUIREMENTS

VDD

IDD

Normal Mode5 (Static)

Normal Mode (Operational)

Using Standby Mode

Using Shutdown Mode

Standby Mode6

Shutdown Mode6

Normal-Mode Power Dissipation

Shutdown Power Dissipation

Standby Power Dissipation

+2.7/+5.25 +2.7/+5.25

700

700

700

700

450

450

80

80

12

12

200

200

2

2

1

1

3.5

3.5

2.1

2.1

10

10

3

3

1

1

600

600

V min/max

µA max

µA typ

µA typ

µA typ

µA typ

µA max

µA max

µA max

mW max

mW max

µW max

µW max

mW max

µW max

fSAMPLE = 125 kSPS

fSAMPLE = 50 kSPS

fSAMPLE = 10 kSPS

fSAMPLE = 1 kSPS

VDD = +2.7 V to +5.25 V

VDD = +4.75 V to +5.25 V (0.5 µA typ)

VDD = +2.7 V to +3.6 V

VDD = +5 V

VDD = +3 V

VDD = +5 V

VDD = +3 V

VDD = +5 V

VDD = +3 V

NOTES

1Temperature ranges as follows: A Version: –40°C to +105°C; B Version: 0°C to +105°C.

2See Terminology.

3SNR calculation includes distortion and noise components.

4Sample tested @ +25°C to ensure compliance.

5All digital inputs @ GND except CS @ VDD. No load on the digital outputs. Analog inputs @ GND.

6SCLK @ GND when SCLK off. All digital inputs @ GND except for CS @ VDD. No load on the digital outputs. Analog inputs @ GND.

Specifications subject to change without notice.

ABSOLUTE MAXIMUM RATINGS1

(TA = +25°C unless otherwise noted)

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

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

Digital Input Voltage to AGND . . . . . . –0.3 V to VDD + 0.3 V

Digital Output Voltage to AGND . . . . –0.3 V to VDD + 0.3 V

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

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

Operating Temperature Range

Commercial

(A Version) . . . . . . . . . . . . . . . . . . . . . . –40°C to +105°C

(B Version) . . . . . . . . . . . . . . . . . . . . . . . 0°C to +105°C

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

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

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

θJA Thermal Impedance . . . . . . . . . . . . 124.9°C/W (SOIC)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150.4°C/W (TSSOP)

θJC Thermal Impedance . . . . . . . . . . . . . 42.9°C/W (SOIC)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27.6°C/W (TSSOP)

Lead Temperature, Soldering

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

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

ESD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 kV

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.

ORDERING GUIDE

Model

Linearity

Error Package

Package

(LSB)1 Descriptions Options

AD7888AR

±2

AD7888BR2

±1

AD7888ARU

±2

AD7888BRU2

±1

EVAL-AD7888CB3

EVAL-CONTROL BOARD4

SOIC

SOIC

TSSOP

TSSOP

R-16A

R-16A

RU-16

RU-16

NOTES

1Linearity error here refers to integral linearity error.

2Contact factory for availability.

3This can be used as a stand-alone evaluation board or in conjunction with the

EVAL-CONTROL BOARD for evaluation/demonstration purposes.

4This board is a complete unit allowing a PC to control and communicate with all

Analog Devices evaluation boards ending in the CB designators.

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 AD7888 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

REV. 0

–3–

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