AD7720 Analog Devices, AD7720 Datasheet - Page 5

• Manufacturer Part Number: AD7720
• Description: CMOS Sigma-Delta Modulator with 90 dB Dynamic Range
• Manufacturer: Analog Devices

Specifications of AD7720

• Resolution (bits): 16bit
• # Chan: 1
• Sample Rate: 25MSPS
• Interface: Ser
• Analog Input Type: Diff-Bip,Diff-Uni
• Ain Range: (Vref) p-p,2.5V p-p,Uni (Vref),Uni 2.5V
• Adc Architecture: Sigma-Delta Modulator
• Pkg Type: SOP

ABSOLUTE MAXIMUM RATINGS
(T
DVDD to DGND . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
AVDD to AGND . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
AVDD to DVDD . . . . . . . . . . . . . . . . . . . . –0.3 V to +0.3 V
AGND to DGND . . . . . . . . . . . . . . . . . . . . –0.3 V to +0.3 V
Digital Input Voltage to DGND . . –0.3 V to DVDD + 0.3 V
Analog Input Voltage to AGND . . . –0.3 V to AVDD + 0.3 V
Input Current to Any Pin Except Supplies
Operating Temperature Range
Storage Temperature Range . . . . . . . . . . . . –65 C to +150 C
Maximum Junction Temperature . . . . . . . . . . . . . . . +150 C
TSSOP Package
NOTES
1
2
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 AD7720 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.
REV. 0
Stresses above those listed under Absolute Maximum Ratings may cause perma-
Transient currents of up to 100 mA will not cause SCR latchup.
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.
A
Industrial (B Version) . . . . . . . . . . . . . . . –40 C to +85 C
Lead Temperature, Soldering
= +25 C unless otherwise noted)
JA
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . +215 C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . +220 C
Thermal Impedance . . . . . . . . . . . . . . . . . . . . 120 C/W
Model
AD7720BRU
1
2
Temperature
Range
–40 C to +85 C
. . . . . . .
10 mA
ORDERING GUIDE
–5–
Package
Description
28-Lead Thin Shrink Small Outline
RESETO
MZERO
AGND
DGND
AGND
PIN CONFIGURATION
STBY
DVAL
REF2
DATA
SCLK
BIP
GC
NC
NC
10
11
12
13
14
NC = NO CONNECT
1
2
3
4
5
6
7
8
9
(Not to Scale)
TOP VIEW
AD7720
WARNING!
28
27
26
25
24
23
22
21
20
19
18
17
16
15
DVDD
AGND
DGND
AVDD
REF1
AGND
AVDD
AGND
VIN(+)
RESET
VIN(–)
AGND
XTAL2
XTAL1/MCLK
Package
Option
RU-28
ESD SENSITIVE DEVICE
AD7720