ADS7804 12-Bit 10us Sampling CMOS Analog-to-Digital Converter | TI.com

ADS7804 (ACTIVE) 12-Bit 10us Sampling CMOS Analog-to-Digital Converter

 

Special note

Please see the ADS8504 for an upgraded version of this device.

Description

The ADS7804 is a complete 12-bit sampling analog-to-digital (A/D) converter using state-of-the-art CMOS structures. It contains a complete 12-bit, capacitor-based, SAR A/D converter with S/H, reference, clock, interface for microprocessor use, and three-state output drivers.

The ADS7804 is specified at a 100kHz sampling rate, and guaranteed over the full temperature range. Laser-trimmed scaling resistors provide an industry-standard ±10V input range, while the innovative design allows operation from a single +5V supply, with power dissipation under 100mW.

The 28-pin ADS7804 is available in plastic 0.3" DIP and SO packages, both fully specified for operation over the industrial –40°C to +85°C range.

Features

  • 100kHz min SAMPLING RATE
  • STANDARD ±10V INPUT RANGE
  • 72dB min SINAD WITH 45kHz INPUT
  • ±0.45 LSB max INL
  • DNL: 12 Bits "No Missing Codes"
  • SINGLE +5V SUPPLY OPERATION
  • PIN-COMPATIBLE WITH 16-BIT ADS7805
  • USES INTERNAL OR EXTERNAL REFERENCE
  • COMPLETE WITH S/H, REF, CLOCK, ETC.
  • FULL PARALLEL DATA OUTPUT
  • 100mW max POWER DISSIPATION
  • 28-PIN 0.3" PLASTIC DIP AND SO PACKAGES

Note: Recommended Voltage Reference: REF02 and REF102

Parametrics

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Part number Order Resolution (Bits) Sample rate (Max) (kSPS) Number of input channels Interface Operating temperature range (C) Package Group Approx. price (US$) Power consumption (Typ) (mW) Package size: mm2:W x L (PKG) Architecture Input type Multi-channel configuration Reference mode Features Input range (Max) (V) Input range (Min) (V) Analog voltage AVDD (Min) (V) Analog voltage AVDD (Max) (V) Digital supply (Min) (V) Digital supply (Max) (V) INL (Max) (+/-LSB) SNR (dB) THD (Typ) (dB) Rating
ADS7804 Order now 12     100     1     Parallel     -40 to 85     SOIC | 28     20.85 | 1ku     81.5     28SOIC: 184 mm2: 10.3 x 17.9 (SOIC | 28)     SAR     Single-Ended         Ext
Int    
    10     -10     4.75     5.25     4.75     5.25     0.45     70     -80     Catalog