AD7999 Analog Devices, AD7999 Datasheet - Page 12

• Manufacturer Part Number: AD7999
• Description: 4-Channel, 8-Bit ADC with I2C Compatible Interface in 8-Lead SOT-23
• Manufacturer: Analog Devices

Specifications of AD7999

• Resolution (bits): 8bit
• # Chan: 4
• Sample Rate: 140kSPS
• Interface: I²C/Ser 2-Wire
• Analog Input Type: SE-Uni
• Ain Range: (Vref) p-p,Uni (Vref),Uni Vdd
• Adc Architecture: SAR
• Pkg Type: SOT

AD7991/AD7995/AD7999
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Table 7. Pin Function Descriptions
Pin
No.
1
2
3
4
5
6
7
8
Table 8. I
Part Number
AD7991-0
AD7991-1
AD7995-0
AD7995-1
AD7999-1
Mnemonic
SCL
SDA
V
V
V
V
GND
V
2
IN0
IN1
IN2
IN3
DD
C Address Selection
/V
REF
Digital Input. Serial bus clock. External pull-up resistor required.
Digital I/O. Serial bus bidirectional data. Open-drain output. External pull-up resistor required.
Description
Analog Input 1. Single-ended analog input channel. The input range is 0 V to V
Analog Input 2. Single-ended analog input channel. The input range is 0 V to V
Analog Input 3. Single-ended analog input channel. The input range is 0 V to V
Analog Input 4. Single-ended analog input channel. The input range is 0 V to V
external V
Analog Ground. Ground reference point for all circuitry on the AD7991/AD7995/AD7999. All analog input signals
should be referred to this AGND voltage.
Power Supply Input. The V
REF
signal.
I
010 1000
010 1001
010 1000
010 1001
010 1001
2
C Address
DD
range for the AD7991/AD7995/AD7999 is from 2.7 V to 5.5 V.
SDA
SCL
V
V
Figure 3. SOT-23 Pin Configuration
IN0
IN1
1
2
3
4
Rev. B | Page 12 of 28
(Not to Scale)
AD7991/
AD7995/
AD7999
TOP VIEW
8
7
6
5
V
GND
V
V
DD
IN3
IN2
/V
REF
REF
REF
REF
REF
.
.
.
. Can also be used to input an