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PDF ADS7821P Data sheet ( Hoja de datos )
| Número de pieza | ADS7821P | |
| Descripción | 16-Bit 10ms Sampling CMOS ANALOG-to-DIGITAL CONVERTER | |
| Fabricantes | Burr-Brown Corporation | |
| Logotipo |  |
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® ADS7821
ADS7821
ADS7821
16-Bit 10µs Sampling CMOS
ANALOG-to-DIGITAL CONVERTER
FEATURES
q 100kHz min SAMPLING RATE
q 0 to +5V INPUT RANGE
q 86dB min SINAD WITH 20kHz INPUT
q DNL: 16-bits “No Missing Codes”
q SINGLE +5V SUPPLY OPERATION
q PIN-COMPATIBLE WITH 12-BIT ADS7820
q USES INTERNAL OR EXTERNAL
REFERENCE
q FULL PARALLEL DATA OUTPUT
q 100mW max POWER DISSIPATION
q 28-PIN 0.3" PLASTIC DIP AND SOIC
DESCRIPTION
The ADS7821 is a complete 16-bit sampling A/D
using state-of-the-art CMOS structures. It contains a
complete 16-bit, capacitor-based, SAR A/D with S/H,
reference, clock, interface for microprocessor use, and
three-state output drivers.
The ADS7821 is specified at a 100kHz sampling rate,
and guaranteed over the full temperature range. Laser-
trimmed scaling resistors provide a 0 to +5V input
range, with power dissipation under 100mW.
The 28-pin ADS7821 is available in a plastic 0.3" DIP
and in an SOIC, both fully specified for operation over
the –25°C to +85°C range.
Clock
Successive Approximation Register and Control Logic
R/C
CS
BYTE
BUSY
0 to +5V Input
5kΩ
6.66kΩ
20kΩ
CAP
REF
CDAC
Buffer
4kΩ
Internal
+2.5V Ref
Comparator
Output
Latches
and
Three
State
Drivers
Three
State
Parallel
Data
Bus
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/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
©1996 Burr-Brown Corporation
PDS-11323A
ADPSrin7ted8in2U1.S.A. June, 1996
®
1 page  
TYPICAL PERFORMANCE CURVES
TA = –25°C to +85°C, fS = 100kHz, VDIG = VANA = +5V, using external reference, unless otherwise specified.
8.00
7.90
7.80
7.70
7.60
7.50
7.40
7.30
7.20
–25
CONVERSION TIME vs TEMPERATURE
0 25 50 75
Temp (°C)
2.52
2.515
2.51
2.505
2.5
2.495
2.49
2.485
2.48
–25
INTERNAL REFERENCE VOLTAGE
vs TEMPERATURE
0 25 50 75
Temp (°C)
Min/Max DNL Errors
–0.740 at 36431
1.070 at 32767
+1.0
+0.5
–0.5
–1.0
0 8192 16384 24576 32768 40960 49152 57344 65536
Min/Max INL Errors
+2.0
–0.900 at 12447
1.910 at 32767
+1.0
–1.0
–2.0
0 8192 16384 24576 32768 40960 49152 57344 65536
®
5 ADS7821
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet ADS7821P.PDF ] | |
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