ADC803 ® High Speed ANALOG-TO-DIGITAL CONVERTER FEATURES DESCRIPTION ● 12-BIT RESOLUTION The ADC803 is a high speed hybrid successive approximation analog-to-digital converter utilizing laser-trimmed thin film components. ● LINEARITY ERROR: ±0.12%, max (C Grade) ● NO MISSING CODES: –55°C to +125°C (S Grade) It is complete with internal reference, clock, and comparator, and is packaged in a 32-pin metal package. Conversion time is set at the factory to 1.5µs. ● HIGH SINAD RATIO: 72dB With user-adjusted conversion time set at 1µs, ±1LSB accuracy can be achieved. The gain and offset errors may be externally trimmed to zero. ● LOW HARMONIC DISTORTION: –73dB ● CONVERSION TIME: 500ns, 8 Bits 670ns, 10 Bits 1.5µs, 12 Bits Internal scaling resistors are provided for the selection of analog signal input ranges of 0V to –10V, ±5V, and ±10V. Output codes available are complementary binary for unipolar inputs and bipolar offset binary for bipolar inputs. Parallel Digital Output 12-Bit Successive Approx. Register (SAR) Convert Command Input Range Select Reference 12-Bit Converter All digital inputs and outputs are TTL-compatible. Power supply requirements are ±15V and +5V. Comparator In Bipolar Offset Clock Rate Control Clock Clock Out Status International Airport Industrial Park • Mailing Address: PO Box 11400 Tel: (520) 746-1111 • Twx: 910-952-1111 • Cable: BBRCORP • © 1983 Burr-Brown Corporation • Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706 Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132 PDS-493D Printed in U.S.A. October, 1993 SPECIFICATIONS At +25°C, rated power supplies, 1.5µs conversion time, and after 6-minute warm-up, unless otherwise noted. ADC803CM PARAMETER MIN TYP RESOLUTION ADC803BM MAX MIN TYP 12 ADC803SM MAX MIN TYP 12 MAX UNITS 12 Bits INPUTS ANALOG Voltage Ranges: Bipolar Unipolar Impedance: –10V to 0V, ±5V ±10V ±5, ±10 0 to –10 1.4 2.4 DIGITAL Convert Command Logic Loading * * * * * * * * V V kΩ kΩ Negative pulse 50ns wide (min) trailing edge (0 to 1) initiates conversion. 4 * * TTL Loads TRANSFER CHARACTERISTICS ACCURACY Gain Error (1) Offset Error(1): Unipolar Bipolar Linearity Error: 1.5µs Conversion Time 1.0µs Conversion Time Differential Linearity Error: 1.5µs Conversion Time 1.0µs Conversion Time Inherent Quantization Error POWER SUPPLY SENSITIVITY Gain and Offset: +15VDC –15VDC +5VDC Conversion Time: +15VDC –15VDC +5VDC CONVERSION TIME Factory Set Range of Adjustments DRIFT Gain Offset: Unipolar Bipolar Linearity Error –25°C to +85°C: 1.5µs Conversion Time 1.0µs Conversion Time –55°C to +125°C: 1.7µs Conversion Time, max(4) Differential Linearity Error –25°C to +85°C: 1.5µs Conversion Time 1.0µs Conversion Time –55°C to +125°C: 1.7µs Conversion Time, max(4) Conversion Time No Missing Code Temp. Range: 1.5µs Conversion Time 1.7µs Conversion Time, max(4) ±0.04 ±0.05 ±0.02 ±0.1 ±0.2 ±0.1 ±0.08 ±0.07 * ±0.009 ±0.015 ±0.012 ±0.020 ±0.020 ±0.012 ±0.015 ±0.024 1/2 ±0.024 * ±0.0036 ±0.0005 ±0.001 ±0.7 None ±0.8 * * * * * * 1.3 0.8 1.5 2.2 ±10 ±2 ±3 ±30 ±7 ±10 ±0.012 ±0.015 ±0.018 * * ±0.2 ±0.3 ±0.2 ±0.04 * * ±0.1 * * % % of FSR(2) % of FSR ±0.020 ±0.012 ±0.015 % of FSR % of FSR ±0.020 * * * * % of FSR % of FSR LSB * * * * * * * * ±15 ±3 ±5 ±0.020 * * * * * * * * ±0.024 ±0.015 ±0.012 ±0.015 ±0.018 ±0.024 * µs µs * * * ppm of FSR/°C ppm of FSR/°C ppm of FSR/°C * * % of FSR % of FSR ±0.024 % of FSR % of FSR % of FSR ±0.015 * * +85 * * ±0.024 ±0.1 –25 % of FSR/%VCC % of FSR/%VCC % of FSR/%VDD %/%VCC %/%VCC %/%VDD ±0.024 * –55 +125 % of FSR % of FSR °C °C OUTPUT DIGITAL DATA Parallel Output Codes: Unipolar Bipolar Output Drive Status Status Output Drive Internal Clock Clock Output Drive Frequency (without external clock adj.) Complementary Straight Binary Bipolar Offset Binary 6 Logic “1” During Conversion 6 * * * * * * * * 3 * * 8 TTL Loads * TTL Loads * * * TTL Loads MHz The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant any BURR-BROWN product for use in life support devices and/or systems. ® ADC803 2 SPECIFICATIONS (CONT) At +25°C, rated power supplies, 1.5µs conversion time, and after 6-minute warm-up, unless otherwise noted. ADC803CM PARAMETER POWER SUPPLY REQUIREMENTS Power Consumption Rated Voltage: Analog (±VCC) Digital (VDD) Supply Drain: +15V –15V +5V TEMPERATURE RANGE (Ambient) Specification Storage ADC803BM ADC803SM MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS ±14.25 +4.75 ±15 +5 +27 –38 +180 ±15.75 +5.25 +32 –55 +210 * * * * * * * * * * * * * * * * * * * * * * * * VDC VDC mA mA mA +85 +125 * * * * –55 * +125 * °C °C –25 –55 * Same specification as for ADC803CM. NOTES: (1) Adjustable to zero. See Optional Gain and Offset Adjustment section. (2) FSR means Full Scale Range. For example, unit connected for ±10V has 20V FSR. (3) See Optional Clock Rate Control section. For faster conversion time at less resolution, see section on External Short Cycle. (4) Conversion time is factory-set at approximately 1.4µs at +25°C. As temperature increases, the conversion time increases. At +125°C the conversion time will be no more than 1.7µs. No Missing Codes is guaranteed over –55°C to +125°C provided the conversion time is allowed to increase with temperature. ADC803 dynamic performance characteristics are described in a report titled “Analogue-to-Digital Converter Performance Tests Using the Fast Fourier Transform” by R. A. Belcher, University College of Swansea, Wales, UK. (available from Burr-Brown on letterhead request). CONNECTION DIAGRAM (MSB) Bit 1 1 Bit 2 2 Bit 3 32 Reference Analog Common +15VDC Supply (+VCC) 3 30 –15VDC Supply (–VCC) Bit 4 4 29 Bipolar Offset Bit 5 5 28 Analog Common Bit 6 6 27 Sense +5VDC (VDD) Supply 7 26 Comparator In Digital Common 8 25 10V (1) 9 24 20V Status 10 23 –15VDC Supply (–VCC) Bit 7 11 22 +5VDC Supply (VDD) 21 Digital Common 12-Bit D/A Converter 31 1kΩ 2kΩ 12-Bit SAR Bit 8 12 Bit 9 13 545Ω Bit 10 14 Comparator Bit 11 15 Clock Bit 12 16 20 +15VDC Supply (+VCC) 19 Clock Rate Control 18 Convert Command 17 Clock Out NOTE: (1) Serial data is not guaranteed. ORDERING INFORMATION ABSOLUTE MAXIMUM RATINGS ADC803 X M Analog Supply Voltage To Analog Common .................................... ±18V Digital Supply Voltage To Digital Common ......................................... +7V Digital Controls Inputs ...................................................................... +5.5V Analog Inputs ..................................................................................... ±15V Operating Temperature: Ambient .................................................. +125°C Case ....................................................... +135°C Storage Temperature ..................................................................... +125°C Q Basic Model Number Performance Grade Code B, C = –25°C to +85°C S = –55°C to +125°C Package Code M = Metal DIP Reliability Screening Q = Q-Screened PACKAGE INFORMATION MODEL PACKAGE PACKAGE DRAWING NUMBER(1) ADC803 32-Pin Metal 116 NOTE: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix D of Burr-Brown IC Data Book. ® 3 ADC803 This datasheet has been download from: www.datasheetcatalog.com Datasheets for electronics components.