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Giải thích chi tiết về linh kiện	LC2MOS Signal Conditioning ADC with RTD Excitation Currents

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ORDERING GUIDE

Model

Temperature Range

Package Option*

AD7711AN

–40

°C to +85°C

N-24

AD7711AR

–40

°C to +85°C

R-24

AD7711AQ

–40

°C to +85°CQ-24

AD7711SQ

–55

°C to +125°CQ-24

EVAL-AD7711EB

Evaluation Board

*N = Plastic DIP, Q = Cerdip; R = SOIC.

Parameter

A, S Versions1

Units

Conditions/Comments

POWER REQUIREMENTS

Power Supply Voltages

AVDD Voltage

+5 to +10

V nom

±5% for Specified Performance

DVDD Voltage

V nom

±5% for Specified Performance

AVDD – VSS Voltage

+10.5

V max

For Specified Performance

Power Supply Currents

AVDD Current

mA max

DVDD Current

4.5

mA max

VSS Current

1.5

mA max

VSS = –5 V

Power Supply Rejection18

Rejection w.r.t. AGND; Assumes VBIAS Is Fixed

Positive Supply (AVDD and DVDD)

See Note 19

dB typ

Negative Supply (VSS)

dB typ

Power Dissipation

Normal Mode

mW max

AVDD = DVDD = +5 V, VSS = 0 V; Typically 25 mW

52.5

mW max

AVDD = DVDD = +5 V, VSS = –5 V; Typically 30 mW

Standby (Power-Down) Dissipation

mW max

AVDD = DVDD = +5 V, VSS = 0 V or –5 V; Typically 7 mW

NOTES

16The AD7711 is specified with a 10 MHz clock for AV

DD voltages of +5 V ± 5%. It is specified with an 8 MHz clock for AV DD voltages greater than 5.25 V and less

than 10.5 V.

17The

±5% tolerance on the DV

DD input is allowed provided that DVDD does not exceed AVDD by more than 0.3 V.

18Measured at dc and applies in the selected passband. PSRR at 50 Hz will exceed 120 dB with filter notches of 10 Hz, 25 Hz or 50 Hz. PSRR at 60 Hz will exceed

120 dB with filter notches of 10 Hz, 30 Hz or 60 Hz.

19PSRR depends on gain: Gain of 1 = 70 dB typ; Gain of 2: 75 dB typ; Gain of 4 = 80 dB typ; Gains of 8 to 128 = 85 dB typ. These numbers can be improved (to

95 dB typ) by deriving the VBIAS voltage (via Zener diode or reference) from the AVDD supply.

Specifications subject to change without notice.

AD7711–SPECIFICATIONS

REF OUT to AGND . . . . . . . . . . . . . . . . . . . . –0.3 V to AVDD

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

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

Operating Temperature Range

Commercial (A Version) . . . . . . . . . . . . . . . . –40

°C to +85°C

Extended (S Version) . . . . . . . . . . . . . . . . . –55

°C to +125°C

Storage Temperature Range . . . . . . . . . . . . . –65

°C to +150°C

Lead Temperature (Soldering, 10 secs) . . . . . . . . . . . . +300

°C

Power Dissipation (Any Package) to +75

°C . . . . . . . . 450 mW

*Stresses 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 the specification is not implied. Exposure to absolute maximum rating

conditions for extended periods may affect device reliability.

ABSOLUTE MAXIMUM RATINGS*

(TA = +25

°C, unless otherwise noted)

AVDD to DVDD . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +12 V

AVDD to VSS . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +12 V

AVDD to AGND . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +12 V

AVDD to DGND . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +12 V

DVDD to AGND . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +6 V

DVDD to DGND . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +6 V

VSS to AGND . . . . . . . . . . . . . . . . . . . . . . . . . +0.3 V to –6 V

VSS to DGND . . . . . . . . . . . . . . . . . . . . . . . . . +0.3 V to –6 V

Analog Input Voltage to AGND

. . . . . . . . . . . . . . . . . . . . . . . . . VSS – 0.3 V to AVDD + 0.3 V

Reference Input Voltage to AGND

. . . . . . . . . . . . . . . . . . . . . . . . . VSS – 0.3 V to AVDD + 0.3 V

REV. F

–4–

CAUTION

ESD (electrostatic discharge) sensitive device. The digital control inputs are diode protected;

however, permanent damage may occur on unconnected devices subject to high energy electro-

static fields. Unused devices must be stored in conductive foam or shunts. The protective foam

should be discharged to the destination socket before devices are inserted.

WARNING!

ESD SENSITIVE DEVICE

Số phần tương tự - AD7711AN

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Analog Devices	AD7711AN	301Kb / 28P	LC2MOS Signal Conditioning ADC with RTD Excitation Currents REV. G
	AD7711AN	301Kb / 28P	LC2MOS Signal Conditioning ADC with RTD Excitation Currents REV. G
	AD7711AN	354Kb / 29P	Signal Conditioning ADC
	AD7711ANZ	301Kb / 28P	LC2MOS Signal Conditioning ADC with RTD Excitation Currents REV. G

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Mô tả tương tự - AD7711AN

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