AD7468BRM-REEL 查看數據表（PDF） - Analog Devices

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AD7468BRM-REEL

1.8V; 450mW; micro-power, 8/10/12-bit ADC. For battery powered systems, madical instruments, remote data acquisition, isolated data acquisition

Analog Devices 

AD7466/AD7467/AD7468

PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS

VDD 1

GND 2

VIN 3

AD7466/

AD7467/

AD7468

TOP VIEW

(Not to Scale)

6 CS

5 SDATA

4 SCLK

Figure 4. SOT-23 Pin Configuration

CS 1

SDATA 2

SCLK 3

AD7466/

AD7467/

AD7468

8 VDD

7 GND

6 VIN

NC 4 TOP VIEW 5 NC

(Not to Scale)

NC = NO CONNECT

Figure 5. MSOP Pin Configuration

Table 6. Pin Function Descriptions

Pin No.

SOT-23 MSOP Mnemonic Description

6

1

CS

Chip Select. Active low logic input. This input provides the dual function of initiating conversions on the

devices and frames the serial data transfer.

1

8

VDD

Power Supply Input. The VDD range for the devices is from 1.6 V to 3.6 V.

2

7

GND

Analog Ground. Ground reference point for all circuitry on the devices. All analog input signals should

be referred to this GND voltage.

3

6

VIN

Analog Input. Single-ended analog input channel. The input range is 0 V to VDD.

5

2

SDATA

Data Out. Logic output. The conversion result from the AD7466/AD7467/AD7468 is provided on this

output as a serial data stream. The bits are clocked out on the falling edge of the SCLK input. The data

stream from the AD7466 consists of four leading zeros followed by the 12 bits of conversion data,

provided MSB first. The data stream from the AD7467 consists of four leading zeros followed by the 10

bits of conversion data, provided MSB first. The data stream from the AD7468 consists of four leading

zeros followed by the 8 bits of conversion data, provided MSB first.

4

3

SCLK

Serial Clock. Logic input. SCLK provides the serial clock for accessing data from the parts. This clock

input is also used as the clock source for the conversion process of the parts.

4, 5

NC

No Connect.

Rev. C | Page 12 of 28

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