AD7191BRUZ datasheet(5/21 Pages) AD

номер детали	AD7191BRUZ

подробное описание детали	Sigma-Delta ADC for Bridge Sensors

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AD7191

Rev. A | Page 4 of 20

Parameter1

AD7191B

Unit

Test Conditions/Comments

Analog Input Current

Input Current2

±2

nA max

Gain = 1

±3

nA max

Gain > 1

Input Current Drift

±5

pA/°C typ

REFERENCE INPUT

REFIN Voltage

AVDD

V nom

REFIN = REFIN(+)

− REFIN(−).

Reference Voltage Range2

1

V min

AVDD

V max

The differential input must be limited to

±(AVDD − 1.25 V)/gain when gain > 1.

Absolute REFIN Voltage Limits2

AGND – 50 mV

V min

AVDD + 50 mV

V max

Average Reference Input Current

4.5

μA/V typ

Average Reference Input Current

Drift

±0.03

nA/V/°C typ

External clock.

±1.3

nA/V/°C typ

Internal clock.

Normal-Mode Rejection2

Same as for analog

inputs

Common-Mode Rejection

100

dB typ

TEMPERATURE SENSOR

Accuracy

+2

°C typ

Applies after user calibration at one temperature.

Sensitivity

2815

Codes/°C typ

BRIDGE POWER-DOWN SWITCH

RON

10

Ω max

Allowable Current2

30

mA max

Continuous current.

INTERNAL/EXTERNAL CLOCK

Internal Clock

Frequency

4.92 + 4%

MHz min/MHz max

Duty Cycle

50:50

% typ

External Clock/Crystal

Frequency

4.9152

MHz nom

2.4576/5.12

MHz min/MHz max

Input Low Voltage, VINL

0.8

V max

DVDD = 5 V.

0.4

V max

DVDD = 3 V.

Input High Voltage, VINH

2.5

V min

DVDD = 3 V.

3.5

V min

DVDD = 5 V.

Input Current

±10

μA max

MCLKIN = DVDD or DGND.

LOGIC INPUTS

Input High Voltage, VINH2

2

V min

Input Low Voltage, VINL2

0.8

V max

Hysteresis2

0.1/0.25

V min/V max

Input Currents

±10

μA max

VIN = DVDD or DGND.

LOGIC OUTPUT (DOUT/RDY)

Output High Voltage, VOH 2

DVDD

− 0.6

V min

DVDD = 3 V, ISOURCE = 100 μA.

Output Low Voltage, VOL2

0.4

V max

DVDD = 3 V, ISINK = 100 μA.

Output High Voltage, VOH2

4

V min

DVDD = 5 V, ISOURCE = 200 μA.

Output Low Voltage, VOL2

0.4

V max

DVDD = 5 V, ISINK = 1.6 mA.

Аналогичный номер детали - AD7191BRUZ

производитель	номер детали	датащи	подробное описание детали
Analog Devices	AD7191BRUZ	381Kb / 20P	Pin-Programmable, Ultralow Noise, 24-Bit, Sigma-Delta ADC for Bridge Sensors REV. A
Analog Devices	AD7191BRUZ-REEL	381Kb / 20P	Pin-Programmable, Ultralow Noise, 24-Bit, Sigma-Delta ADC for Bridge Sensors REV. A

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Аналогичное описание - AD7191BRUZ

производитель	номер детали	датащи	подробное описание детали
Analog Devices	AD7796	478Kb / 24P	Sigma-Delta ADC for Bridge Sensors Low Power
	AD7796	552Kb / 24P	Low Power, 16-/24-Bit Sigma-Delta ADC for Bridge Sensors REV. A
	AD7191	381Kb / 20P	Pin-Programmable, Ultralow Noise, 24-Bit, Sigma-Delta ADC for Bridge Sensors REV. A
New Japan Radio	NJU3610	269Kb / 14P	1bit Delta-Sigma Stereo ADC
Texas Instruments	ADS1235	1Mb / 76P	[Old version datasheet] Precision, 3-Channel, Differential-Input, 7200-SPS, 24-Bit Delta-Sigma ADC for Bridge Sensors
STMicroelectronics	AN1827	91Kb / 11P	IMPLEMENTATION OF SIGMA-DELTA ADC
Analog Devices	AD7192	559Kb / 41P	Sigma-Delta ADC with PGA
Core Technology (Shenzh...	CS1180	757Kb / 30P	20-bit Sigma-Delta ADC
Analog Devices	AD7715	495Kb / 40P	16-Bit, Sigma-Delta ADC REV. D
Core Technology (Shenzh...	CS1231	674Kb / 21P	24-bit Sigma-Delta ADC

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