ADS7822B Datasheet PDF - Burr-Brown Corporation
| Part Number | ADS7822B | |
| Description | 12-Bit High Speed 2.7V microPower Sampling ANALOG-TO-DIGITAL CONVERTER | |
| Manufacturers | Burr-Brown Corporation | |
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®
ADS7822
OAPDSA7682528
For most current data sheet and other product
information, visit www.burr-brown.com
ADS7822
12-Bit High Speed 2.7V microPower Sampling
ANALOG-TO-DIGITAL CONVERTER
FEATURES
q 75kHz SAMPLING RATE
q MICRO POWER:
0.54mW at 75kHz
0.06mW at 7.5kHz
q POWER DOWN: 3µA max
q MINI-DIP-8, SOIC-8, AND MSOP-8
q DIFFERENTIAL INPUT
q SERIAL INTERFACE
APPLICATIONS
q BATTERY OPERATED SYSTEMS
q REMOTE DATA ACQUISITION
q ISOLATED DATA ACQUISITION
q SIMULTANEOUS SAMPLING,
MULTI-CHANNEL SYSTEMS
DESCRIPTION
The ADS7822 is a 12-bit sampling analog-to-digital
converter (A/D) with guaranteed specifications over a
2.7V to 3.6V supply range. It requires very little power
even when operating at the full 75kHz rate. At lower
conversion rates, the high speed of the device enables
it to spend most of its time in the power down mode—
the power dissipation is less than 60µW at 7.5kHz.
The ADS7822 also features operation from 2.0V to
5V, a synchronous serial interface, and a differential
input. The reference voltage can be set to any level
within the range of 50mV to VCC.
Ultra low power and small size make the ADS7822
ideal for battery operated systems. It is also a perfect
fit for remote data acquisition modules, simultaneous
multi-channel systems, and isolated data acquisition.
The ADS7822 is available in a plastic mini-DIP-8, an
SOIC-8, or an MSOP-8 package.
VREF
+In
–In
S/H Amp
SAR
CDAC
Comparator
Control
Serial
Interface
DOUT
DCLOCK
CS/SHDN
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111
Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
©1996 Burr-Brown Corporation
PDS-1358C
Printed in U.S.A., May, 2000
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TYPICAL PERFORMANCE CURVES (Cont.)
At TA = +25°C, VCC = +2.7V, VREF = +2.5V, fSAMPLE = 75kHz, fCLK = 16 • fSAMPLE, unless otherwise specified.
CHANGE IN OFFSET vs REFERENCE VOLTAGE
1.2
1.0 VCC = 5V
0.8
0.6
0.4
0.2
0.0
–0.2
–0.4
–0.6
–0.8
1
234
Reference Voltage (V)
5
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–50
CHANGE IN OFFSET vs TEMPERATURE
–25 0
25 50 75
Temperature (°C)
100
CHANGE IN GAIN vs REFERENCE VOLTAGE
2.5
2.0 VCC = 5V
1.5
1.0
0.5
0.0
–0.5
–1.0
–1.5
1
234
Reference Voltage (V)
5
12
11.75
EFFECTIVE NUMBER OF BITS
vs REFERENCE VOLTAGE
VCC = 5V
11.5
11.25
11
10.75
10.5
10.25
10
0.1
1
Reference Voltage (V)
10
0.15
0.1
0.05
0
–0.05
–0.1
–0.15
–50
CHANGE IN GAIN vs TEMPERATURE
–25 0
25 50 75
Temperature (°C)
100
PEAK-TO-PEAK NOISE vs REFERENCE VOLTAGE
10
9 VCC = 5V
8
7
6
5
4
3
2
1
0
0.1
1
Reference Voltage (V)
10
®
5 ADS7822
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for ADS7822B electronic component. |
| Information | Total 12 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ ADS7822B.PDF Datasheet ] | |
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Featured Datasheets
| Part Number | Description | MFRS |
| ADS7822 | The function is 12-Bit High Speed 2.7V microPower Sampling ANALOG-TO-DIGITAL CONVERTER. Burr-Brown Corporation | |
| ADS7822 | The function is 12-Bit 200kHz microPower Sampling Analog-To-Digital Converter (Rev. C). Texas Instruments |  |
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