AD7680 データシートの表示（PDF） - Analog Devices
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AD7680 Datasheet PDF : 24 Pages
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AD7680
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
SOT-23
VDD 1
6 CS
GND 2 AD7680 5 SDATA
TOP VIEW
VIN 3 (Not to Scale) 4 SCLK
Figure 3. SOT-23 Pin Configuration
MSOP
VDD 1
8 CS
GND 2 AD7680 7 SDATA
TOP VIEW
GND 3 (Not to Scale) 6 NC
VIN 4
5 SCLK
NC = NO CONNECT
Figure 4. MSOP Pin Configuration
Table 6. Pin Function Descriptions
Pin No. Pin No.
SOT-23 MSOP Mnemonic Function
1
1
VDD
Power Supply Input. The VDD range for the AD7680 is from 2.5 V to 5.5 V.
2
2, 3
GND
Analog Ground. Ground reference point for all circuitry on the AD7680. All analog input signals should
be referred to this GND voltage.
3
4
VIN
Analog Input. Single-ended analog input channel. The input range is 0 V to VDD.
4
5
SCLK
Serial Clock. Logic input. SCLK provides the serial clock for accessing data from this part. This clock
input is also used as the clock source for the AD7680's conversion process.
5
7
SDATA
Data Out. Logic output. The conversion result from the AD7680 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
AD7680 consists of four leading zeros followed by 16 bits of conversion data that are provided MSB
first. This will be followed by four trailing zeroes if CS is held low for a total of 24 SCLK cycles. See the
Serial Interface section.
6
8
CS
Chip Select. Active low logic input. This input provides the dual function of initiating conversions on
the AD7680 and framing the serial data transfer.
N/A
6
NC
No Connect. This pin should be left unconnected.
Rev. A | Page 8 of 24
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