ADS7818E Datasheet PDF - Burr-Brown Corporation
| Part Number | ADS7818E | |
| Description | 2SC5161 | |
| Manufacturers | Burr-Brown Corporation | |
| Logo |  |
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®
ADS7818
ADS7818
For most current data sheet and other product
information, visit www.burr-brown.com
12-Bit High Speed Low Power Sampling
ANALOG-TO-DIGITAL CONVERTER
FEATURES
q 500kHz THROUGHPUT RATE
q 2.5V INTERNAL REFERENCE
q LOW POWER: 11mW
q SINGLE SUPPLY +5V OPERATION
q DIFFERENTIAL INPUT
q SERIAL INTERFACE
q GUARANTEED NO MISSING CODES
q MINI-DIP-8 AND MSOP-8
q UNIPOLAR INPUT RANGE
APPLICATIONS
q BATTERY OPERATED SYSTEMS
q DIGITAL SIGNAL PROCESSING
q HIGH SPEED DATA ACQUISITION
q WIRELESS COMMUNICATION SYSTEMS
DESCRIPTION
The ADS7818 is a 12-bit sampling analog-to-digital
converter (A/D) complete with sample/hold, internal
2.5V reference, and synchronous serial interface. Typi-
cal power dissipation is 11mW at a 500kHz through-
put rate. The device can be placed into a power down
mode which reduces dissipation to just 2.5mW. The
input range is zero to two times the reference voltage,
and the internal reference can be overdriven by an
external voltage.
Low power, small size, and high-speed make the
ADS7818 ideal for battery operated systems such as
wireless communication devices, portable multi-chan-
nel data loggers, and spectrum analyzers. The serial
interface also provides low-cost isolation for remote
data acquisition. The ADS7818 is available in a plas-
tic mini-DIP-8 or an MSOP-8 package and is guaran-
teed over the –40°C to +85°C temperature range.
SAR
CLK
CONV
+In
–In
S/H Amp
CDAC
Comparator
Serial
Interface
DATA
VREF
Buffer
Internal
+2.5V Ref
10kΩ ±30%
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
©1998 Burr-Brown Corporation
PDS-11408B
ADPrSint7ed8in1U8.S.A. May, 2000
®
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TYPICAL PERFORMANCE CURVES (Cont.)
At TA = +25°C, VCC = +5V, fSAMPLE = 500kHz, fCLK = 16 • fSAMPLE, and internal +2.5V reference, unless otherwise specified.
0.2
0.0
–0.2
–0.4
–0.6
–0.8
–1.0
–1.2
2.0
CHANGE IN FULL-SCALE ERROR
vs EXTERNAL REFERENCE VOLTAGE
2.1 2.2 2.3 2.4
External Reference Voltage (V)
2.5
0.5
0.4
0.3
0.2
0.1
0.0
–0.1
–0.2
–0.3
–0.4
1.9
CHANGE IN OFFSET
vs EXTERNAL REFERENCE VOLTAGE
2.1 2.3 2.5 2.7 2.9
External Reference Voltage (V)
3.1
0.70
0.65
0.60
0.55
0.50
0.45
0.40
2.0
PEAK-TO-PEAK NOISE
vs EXTERNAL REFERENCE VOLTAGE
2.1 2.2 2.3 2.4
External Reference Voltage (LSB)
2.5
30
25
20
15
10
5
0
1
POWER SUPPLY REJECTION
vs POWER SUPPLY RIPPLE FREQUENCY
10 100 1k 10k 100k
Power Supply Ripple Frequency (Hz)
1M
0
–20
–40
–60
–80
–100
–120
0
FREQUENCY SPECTRUM
(4096 Point FFT; fIN = 10.9kHz, –0.2dB)
62.5
125 187.5
Frequency (kHz)
250
0
–20
–40
–60
–80
–100
–120
0
FREQUENCY SPECTRUM
(4096 Point FFT; fIN = 102kHz, –0.2dB)
62.5 125 187.5
Frequency (kHz)
250
®
5 ADS7818
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for ADS7818E electronic component. |
| Information | Total 13 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ ADS7818E.PDF Datasheet ] | |
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