12-Bit 600kHz Sampling CMOS ANALOG-to-DIGITAL CONVERTER
®
FPO
ADS 783 1
ADS7831
ADS
783
1
12-Bit 600kHz Sampling CMOS ANALOG-to-DIGITAL CONVERTER
FEATURES
q 600kHz THROUG...
Description
®
FPO
ADS 783 1
ADS7831
ADS
783
1
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 inherent 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.
FREQUENCY SPECTRUM (16384 Point FFT; fIN = 250kHz, –0.5dB) 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 –110 –120 0
THD SNR SFDR 2nd Harmonic 3rd Harmonic : : : : : –91dB 72dB 94dB –98dB –94dB
Amplitude (dB)
3 2
SFDR: 94dBc
75
150 Frequency (kHz)
225
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
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