AD7764 datasheet(8/21 Pages) AD

部品番号	AD7764

部品情報	24-Bit 312 kSPS 109dB ADC With On-Chip Buffers Serial Interface

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AD7764

Preliminary Technical Data

Rev. PrC | Page 8 of 21

PIN CONFIGURATION AND FUNCTIONAL DESCRIPTIONS

1

2

3

4

5

6

7

8

9

10

11

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

16

15

VOUTA+

VINA+

VOUTA-

AVDD2

VIN+

VIN-

VINA-

VREF+

REFGND

AVDD4

RBIAS

AGND1

AVDD1

AGND3

OVERRANGE

SCO

FSI

SDO

FSO

AVDD2

AGND2

MCLK

SYNC

SDI

RESET/PWRDWN

DVDD

DEC_RATE

AVDD3

AD7764

TOP VIEW

(Not to Scale)

Figure 5. 28-Lead TSSOP Pin Configuration

Table 4. Pin Function Descriptions

Number

Pin Mnemonic

Description

24

AVDD1

+2.5V power supply to the modulator. This pin should be decoupled to pin TBD with a TBDnF

capacitor.

7, 21

AVDD2

+5V power supply. Pin 7 should be decoupled to AGND3(pin 8) with a TBD nF capacitor. Pin 21

should be decoupled to AGND1 (pin 23) with a TBD nF capacitor.

28

AVDD3

+3.3V to +5V power supply for on-board differential ampifier. This pin should be decoupled to

AGND1 (pin TBD) with a TBDnF capacitor.

25

AVDD4

+3.3V to +5V power supply for on-board reference buffer. This pin should be decoupled to

REFGND (pin TBD) with a TBDnF capacitor.

17

DVDD

+2.5V power supply for digital circuitry and FIR filter. This pin should be decoupled to the

ground plane with a TBDnF capacitor.

22

RBIAS

Bias Current setting pin. A resistor must be inserted between this pin and AGND. For more

details on this, see the Bias Resistor Section.

23

AGND1

Power Supply ground for analog circuitry.

20

AGND2

Power Supply ground for analog circuitry.

8

AGND3

Power Supply ground for analog circuitry.

26

REFGND

Reference Ground. Ground connection for the reference voltage.

27

VREF+

Reference Input. The input range of this pin is determined by the reference buffer supply

voltage (AVDD4). See Reference Section for more details.

1

VINA-

Negative Input to Differential Amplifier.

2

VOUTA+

Positive Output from Differential Amplifier.

3

VINA+

Positive Input to Differential Amplifier.

4

VOUTA-

Negative Output from Differential Amplifier.

5

VIN-

Negative Input to the Modulator.

6

VIN+

Positive Input to the Modulator.

9

OVERRANGE

When this pin outputs a logic high it indicates that the analog input is out of range . This

occurs when the magnitude of the differential input is greater than VREF

10

SCO

Serial Clock Out. This clock signal is derived from the internal ICLK signal. The frequency of this

clock is equal to ICLK. See the AD7764 Interface section for further details.

11

FSO

Frame Sync Out. This signal frames the serial data output and is 32 SCO periods wide.

同様の部品番号 - AD7764

メーカー	部品番号	データシート	部品情報
Analog Devices	AD7764	1Mb / 32P	24-Bit, 312 kSPS, 109 dB 誇-? ADC with On-Chip Buffers and Serial Interface REV. 0
	AD7764	2Mb / 24P	24-Bit, 8.5 mW, 109 dB, 128/64/32 kSPS ADCs REV. 0
	AD7764	920Kb / 34P	24-Bit, 312 kSPS, 109 dB Sigma-Delta ADC
	AD7764BRUZ	1Mb / 32P	24-Bit, 312 kSPS, 109 dB 誇-? ADC with On-Chip Buffers and Serial Interface REV. 0
	AD7764BRUZ	920Kb / 34P	24-Bit, 312 kSPS, 109 dB Sigma-Delta ADC

More results

同様の説明 - AD7764

メーカー	部品番号	データシート	部品情報
Analog Devices	AD7764	1Mb / 32P	24-Bit, 312 kSPS, 109 dB 誇-? ADC with On-Chip Buffers and Serial Interface REV. 0
	AD7765	330Kb / 21P	24-Bit, 156 kSPS,112dB ADC, With On-Chip Buffers, Serial Interface Rev. PrC
	AD7763	688Kb / 32P	24-Bit, 625 kSPS, 109 dB 誇-? ADC with On-Chip Buffers, Serial Interface REV. 0
	AD7765	1Mb / 32P	24-Bit, 156 kSPS, 112 dB 誇-? ADC with On-Chip Buffers and Serial Interface REV. 0
	AD7763	822Kb / 33P	24-Bit, 625 kSPS, 109 dB Sigma-Delta ADC with On-Chip Buffers, Serial Interface REV. B
	AD7763	642Kb / 33P	Sigma-Delta ADC with On-Chip Buffers, Serial Interface
	AD7764	1Mb / 33P	24-Bit, 312 kSPS, 109 dB Sigma-Delta ADC REV. A
	AD7764	920Kb / 34P	24-Bit, 312 kSPS, 109 dB Sigma-Delta ADC
	AD7765	881Kb / 33P	Sigma-Delta ADC On-Chip Buffers and Serial Interface
	AD7762	591Kb / 28P	625 kSPS, 24-Bit, 109 dB ADC With On-Chip Buffer REV. 0

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