Details, datasheet, quote on part number: ADS7831
| Part | ADS7831 |
| Category | Data Conversion => Multiplying Data Converters |
| Description | 12-bit 600khz Sampling CMOS Analog-to-digital Converter |
| Company | Burr-Brown Corporation |
| Datasheet | Download ADS7831 Datasheet |
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| Cross ref. | Similar parts: MAX120 |
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| Features, Applications |
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 15MHz �3dB BANDWIDTH 28-PIN 0.3" PDIP AND SOIC DESCRIPTIONThe 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 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 ADS7831 is available in a plastic 0.3" DIP and in an SOIC, both fully specified for operation over the industrial to +85�C range. 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 SPECIFICATIONS= 600kHz, +VDIG = +VANA = +5V, �VANA = �5V, using internal reference and the 50 input resistor shown in Figure 4b, unless otherwise specified. ADS7831P, U PARAMETER RESOLUTION ANALOG INPUT Voltage Range Impedance Capacitance THROUGHPUT SPEED Conversion Time Complete Cycle Throughput Rate DC ACCURACY Integral Linearity Error Differential Linearity Error No Missing Codes Total Unadjusted Error(2, 3) (Includes Bipolar Zero Error and Full Scale Error) Power Supply Sensitivity (+VDIG = +VANA = VD) AC ACCURACY Spurious-Free Dynamic Range Total Harmonic Distortion Signal-to-(Noise+Distortion) Signal-to-Noise Usable Bandwidth(5) Full-Power Bandwidth SAMPLING DYNAMICS Aperture Delay Aperture Jitter Transient Response Overvoltage Recovery(6) REFERENCE Reference Voltage Reference DC Source Current (External load should be static) DIGITAL INPUTS Logic Levels VIL VIH IIL IIH DIGITAL OUTPUTS Data Format Data Coding VOL VOH Leakage Current Output Capacitance DIGITAL TIMING Bus Access Time Bus Relinquish Time POWER SUPPLIES Specified Performance +VDIG = +VANA �VANA +IDIG +IANA �IANA Power Dissipation TEMPERATURE RANGE Specified Performance Storage Thermal Resistance (JA) Plastic DIP SOIC Acquire & Convert 600 �1 Guaranteed �10 LSB 1.66 CONDITIONS MIN TYP MAX 12 UNITS Bits pF �s kHz LSB(1) LSB �0.3 +2.4 VIL = 0V VIH = 5V Parallel 12-bits Binary Two's Complement ISINK = 1.6mA ISOURCE = 500�A High-Z State, VOUT 0V to VDIG High-Z State NOTES: (1) LSB means Least Significant Bit. For the 12-bit, �2.5V input ADS7831, one LSB 1.22mV. (2) Measured with 50 in series with analog input. Adjustable to zero with external potentiometers. (3) Total unadjusted error is the worst case of �Full Scale or +Full Scale untrimmed deviation from ideal first and last code transitions and includes the effect of offset error. (4) All specifications in dB are referred to a full-scale �2.5V input. (5) Usable Bandwidth defined as Full-Scale input frequency at which Signal-to-(Noise+Distortion) degrades or 10 bits of accuracy. 6) Recovers to specified performance after x FS input over voltage. Clock Successive Approximation Register and Control LogicCDAC 575 �2.5V Input 2.5k Comparator Cap Output Latches and Three State Drivers Analog Inputs: VIN.............................................................................. �25V REF..................................... +VANA AGND2 �0.3V CAP........................................... Indefinite Short to AGND2 Momentary Short to +VANA Ground Voltage Differences: DGND, AGND2................... �0.3V +VANA.................................................................................................... +7V +VDIG to +VANA................................................................................... +0.3V +VDIG...................................................................................................... 7V �VANA.................................................................................................... �7V Digital Inputs............................................................. �0.3V to +VDIG +0.3V Maximum Junction Temperature................................................... +165�C Internal Power Dissipation............................................................. 825mW Lead Temperature (soldering, 10s)................................................ +300�C MODEL ADS7831P ADS7831U PACKAGE 28-Pin Plastic DIP 28-Pin SOIC PACKAGE DRAWING NUMBER 246 217NOTE: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix D of Burr-Brown IC Data Book. Electrostatic discharge can cause damage ranging from performance degradation to complete device failure. BurrBrown Corporation recommends that all integrated circuits be handled and stored using appropriate ESD protection methods. 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. |
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