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PDF ADS7831P Data sheet ( Hoja de datos )
| Número de pieza | ADS7831P | |
| Descripción | 12-Bit 600kHz Sampling CMOS ANALOG-to-DIGITAL CONVERTER | |
| Fabricantes | Burr-Brown Corporation | |
| Logotipo |  |
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FPOADS7831
ADS7831
ADS7831
12-Bit 600kHz Sampling CMOS
ANALOG-to-DIGITAL CONVERTER
FEATURES
q 600kHz THROUGHPUT RATE
q STANDARD ±2.5V INPUT RANGE
q 69dB min SINAD WITH 250kHz INPUT
q COMPLETE WITH S/H, REF, CLOCK, ETC.
q PARALLEL DATA w/LATCHES
q FULLY SPECIFIED –40°C TO +85°C
q 15MHz –3dB BANDWIDTH
q 28-PIN 0.3" PDIP AND SOIC
DESCRIPTION
The ADS7831 is a complete 12-bit sampling A/D
using state-of-the-art CMOS structures. It contains a
complete 12-bit capacitor-based SAR A/D with inher-
ent S/H, reference, clock, interface for microprocessor
use, and three-state output drivers.
The ADS7831 is specified at a 600kHz sampling rate,
and guaranteed over the full temperature range. A
±2.5V input range and excellent Nyquist performance
provide an optimum solution in ±5V supply systems.
The 28-pin ADS7831 is available in a plastic 0.3" DIP
and in an SOIC, both fully specified for operation over
the industrial –40°C to +85°C range.
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
0
FREQUENCY SPECTRUM
(16384 Point FFT; fIN = 250kHz, –0.5dB)
THD : –91dB
SNR : 72dB
SFDR : 94dB
2nd Harmonic : –98dB
3rd Harmonic : –94dB
3
2
75 150
225
Frequency (kHz)
SFDR: 94dBc
300
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 • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
© 1994 Burr-Brown Corporation
PDS-1275
1
APDrinSted7in8U3.S1.A. March, 1995
®
1 page  
TYPICAL PERFORMANCE CURVES
T = +25°C, fS =600kHz, +VDIG = +VANA = +5V, –VANA = –5V, using internal reference and the 50Ω input resistor shown in Figure 4b, unless otherwise specified.
0
–20
–40
–60
–80
–100
–120
0
FREQUENCY SPECTRUM
(4096 Point FFT; fIN = 252kHz, –0.5dB)
75 150 225
Frequency (kHz)
300
0
–20
–40
–60
–80
–100
–120
0
FREQUENCY SPECTRUM
(4096 Point FFT; fIN = 502kHz, –0.5dB)
75 150 225
Frequency (kHz)
300
0
–20
–40
–60
–80
–100
–120
0
FREQUENCY SPECTRUM
(4096 Point FFT; fIN = 1.002MHz, –0.5dB)
75 150 225
Frequency (kHz)
300
0
–20
–40
–60
–80
–100
–120
0
FREQUENCY SPECTRUM
(4096 Point FFT; f1IN = 232kHz, –6.5dB;
f2IN = 272kHz, –6.5dB)
75 150 225
Frequency (kHz)
300
90
80
70
60
50
40
30
20
10
1k
SIGNAL-TO-(NOISE + DISTORTION)
vs INPUT FREQUENCY (fIN = –0.5dB)
10k 100k 1M
Input Signal Frequency (Hz)
10M
A.C. PARAMETERS vs TEMPERATURE
(fIN = 250kHz, –0.5dB)
100
95 SFDR
90
85
THD
80
75 SNR
70
SINAD
65
60
–75 –50 –25
0 25 50 75 100 125 150
Temperature (°C)
®
5 ADS7831
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet ADS7831P.PDF ] | |
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