AD7709 Analog Devices, AD7709 Datasheet - Page 8

• Manufacturer Part Number: AD7709
• Description: 16-Bit Sigma Delta ADC with Current Sources, Switchable Reference Inputs and I/O Port
• Manufacturer: Analog Devices

Specifications of AD7709

• Resolution (bits): 16bit
• # Chan: 4
• Sample Rate: n/a
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni,SE-Uni
• Ain Range: (2Vref/PGA Gain) p-p
• Adc Architecture: Sigma-Delta
• Pkg Type: SOP

AD7709
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although the
AD7709 features proprietary ESD protection circuitry, permanent damage may occur on devices
subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended
to avoid performance degradation or loss of functionality.
ABSOLUTE MAXIMUM RATINGS*
(T
V
Digital Input Voltage to GND . . . . . . . –0.3 V to V
Storage Temperature Range . . . . . . . . . . . . –65∞C to +150∞C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . 150∞C
Lead Temperature, Soldering
*Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those listed in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
DD
A
PWRGND to AGND . . . . . . . . . . . . . . –20 mV to +20 mV
Analog Input Voltage to GND . . . . . –0.3 V to V
Reference Input Voltage to GND . . . –0.3 V to V
Total AIN/REFIN Current (Indefinite) . . . . . . . . . . 30 mA
Digital Output Voltage to GND . . . . –0.3 V to V
Operating Temperature Range . . . . . . . . . . –40∞C to +85∞C
q
q
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . . 215∞C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . 220∞C
= 25∞C, unless otherwise noted.)
JA
JC
to GND . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
Thermal Impedance . . . . . . . . . . . . . . . . . . . 97.9∞C/W
Thermal Impedance . . . . . . . . . . . . . . . . . . . . . 14∞C/W
Model
AD7709ARU
AD7709BRU
EVAL-AD7709EB
DD
DD
DD
DD
Temperature
–40∞C to +85∞C
–40∞C to +85∞C
Range
+ 0.3 V
+ 0.3 V
+ 0.3 V
+ 0.3 V
ORDERING GUIDE
–8–
Package
Description
TSSOP
TSSOP
Evaluation Board
REFIN1(+)
REFIN2(+)
REFIN1(–)
REFIN2(–)
AINCOM
AIN3/P3
AIN4/P4
P2/SW2
PIN CONFIGURATION
IOUT1
IOUT2
AIN1
AIN2
Package
Option
RU-24
RU-24
10
11
12
4
1
2
3
5
6
7
8
9
(Not to Scale)
AD7709
TOP VIEW
WARNING!
24
23
22
21
20
19
18
17
16
15
14
13
XTAL1
XTAL2
V
GND
DIN
DOUT
RDY
CS
SCLK
RESET
P1/SW1
PWRGND
DD
ESD SENSITIVE DEVICE
REV. A