AD7694 Analog Devices, AD7694 Datasheet - Page 7

• Manufacturer Part Number: AD7694
• Manufacturer: Analog Devices

Specifications of AD7694

• Resolution (bits): 16bit
• # Chan: 1
• Sample Rate: 250kSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: (Vref) p-p,Uni (Vref)
• Adc Architecture: SAR
• Pkg Type: SOP

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Table 7. Pin Function Descriptions
Pin No.
1
2
3
4
5
6
7
8
1
AI = analog input; DI = digital input; DO = digital output; and P = power.
Mnemonic
REF
IN+
IN−
GND
CNV
SDO
SCK
VDD
Type
AI
AI
AI
P
DI
DO
DI
P
1
Convert Input. On its leading edge, it initiates the conversions. It enables the SDO pin when low.
Serial Data Output. The conversion result is output on this pin. It is synchronized to SCK.
Function
Reference Input Voltage. The REF range is from 1 V to VDD. It is referred to the GND pin. This pin should be
decoupled closely to the pin with a ceramic capacitor of a few μF.
Analog Input. It is referred to in IN−. The voltage range, that is, the difference between IN+ and IN−, which
is 0 V to V
Analog Input Ground Sense. To be connected to the analog ground plane or to a remote sense ground.
Power Supply Ground.
Serial Data Clock Input. When CNV is low, the conversion result is shifted out by this clock.
Power Supply.
REF
.
Figure 4. 8-Lead MSOP Pin Configuration
GND
REF
IN+
IN–
1
2
3
4
Rev. A | Page 7 of 16
(Not to Scale)
AD7694
TOP VIEW
8
7
6
5
VDD
SCK
SDO
CNV
AD7694