ADS7835| Datasheet

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ADS7835

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12-Bit, High-Speed, Low Power Sampling ANALOG-TO-DIGITAL CONVERTER
FEATURES
q 500kHz THROUGHPUT RATE q 2.5V INTERNAL REFERENCE q LOW POWER: 17.5mW q SINGLE SUPPLY +5V OPERATION q SERIAL INTERFACE q GUARANTEED NO MISSING CODES q MSOP-8 q VREF INPUT RANGE

DESCRIPTION
The ADS7835 is a 12-bit, sampling analog-to-digital converter (A/D) complete with sample-and-hold (S/H), internal 2.5V reference, and synchronous serial interface. Typical power dissipation is 17.5mW at a 500kHz throughput rate. The device can be placed into a power-down mode which reduces dissipation to just 2.5mW. The input range is V REF to +VREF, and the internal reference can be overdriven by an external voltage. Low power, small size, and high speed make the ADS7835 ideal for battery-operated systems such as wireless communication devices, portable multichannel data loggers, and spectrum analyzers. The serial interface also provides low cost isolation for remote data acquisition. The ADS7835 is available in an MSOP-8 package and is guaranteed over the 40 C to +85 C temperature range.

APPLICATIONS
q BATTERY-OPERATED SYSTEMS q DIGITAL SIGNAL PROCESSING q HIGH-SPEED DATA ACQUISITION q WIRELESS COMMUNICATION SYSTEMS

CLK SAR CONV

2.5V Input

2k CDAC 2k Serial Interface Comparator DATA

S/H Amp

Buffer

Internal +2.5V Ref

VREF

10k 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-1478B

Printed in U.S.A.May, 2000 ADS7835

SBAS102