MAX199 19-0401 Rev 0 6/95 Multi-Range (4V, 2V, +4V, +2V), +5V Supply, 12-Bit DAS with 8+4 Bus Interface General Description Features 12-Bit Resolution, 1/2LSB Linearity The MAX199 multi-range, 12-bit data-acquisition system (DAS) requires only a single +5V supply for operation, Single +5V Operation and converts analog signals up to 4V at its inputs. This Software-Selectable Input Ranges: system provides eight analog input channels that are V , V , 0V to V , 0V to V REF REF/2 REF REF/2 independently software programmable for a variety of Internal 4.096V or External Reference ranges: V , V , 0V to V , or 0V to V . REF REF/2 REF REF/2 Fault-Protected Input Multiplexer (16.5V) This increases effective dynamic range to 14 bits, and provides the user flexibility to interface 4mA-to-20mA, 8 Analog Input Channels 12V, and 15V powered sensors to a single +5V sys- 6s Conversion Time, 100ksps Sampling Rate tem. In addition, the converter is fault-protected to Internal or External Acquisition Control 16.5V a fault condition on any channel will not affect Two Power-Down Modes the conversion result of the selected channel. Other fea- tures include a 5MHz bandwidth track/hold, 100ksps Internal or External Clock throughput rate, internal/external clock, internal/external acquisition control, 8+4 parallel interface, and operation Ordering Information with an internal 4.096V or external reference. PART TEMP. RANGE PIN-PACKAGE A hardware SHDN pin and two programmable power- MAX199ACNI 0C to +70C 28 Narrow Plastic DIP down modes (STBYPD, FULLPD) provide low-current MAX199BCNI 0C to +70C 28 Narrow Plastic DIP shutdown between conversions. In STBYPD mode, the reference buffer remains active, eliminating start-up MAX199ACWI 0C to +70C 28 Wide SO delays. MAX199BCWI 0C to +70C 28 Wide SO The MAX199 employs a standard microprocessor (P) MAX199ACAI 0C to +70C 28 SSOP interface. Its three-state data I/O interface is configured MAX199BCAI 0C to +70C 28 SSOP to operate with 8-bit data buses, and data-access and MAX199BC/D 0C to +70C Dice* bus-release timing specifications are compatible with Ordering Information continued at end of data sheet. most popular Ps. All logic inputs and outputs are *Dice are specified at TA = +25C, DC parameters only. TTL/CMOS compatible. Pin Configuration The MAX199 is available in 28-pin DIP, wide SO, SSOP, and ceramic SB packages. TOP VIEW For a different combination of input ranges (10V, 5V, 0V to 10V, 0V to 5V), see the MAX197 data sheet. For 12- CLK 28 DGND 1 bit bus interfaces, see the MAX196/MAX198 data sheet. CS V 2 27 DD REF WR 3 26 Applications REFADJ RD 4 25 Industrial-Control Systems HBEN 5 24 INT MAX199 Robotics SHDN 6 23 CH7 Data-Acquisition Systems D7 7 22 CH6 Automatic Testing Systems D6 21 CH5 8 Medical Instruments CH4 D5 9 20 Telecommunications CH3 D4 10 19 D3/D11 11 18 CH2 D2/D10 12 17 CH1 13 16 CH0 D1/D9 D0/D8 15 AGND 14 Functional Diagram appears at end of data sheet. DIP/SO/SSOP/Ceramic SB Maxim Integrated Products 1 Call toll free 1-800-722-8266 for free samples or literature.Multi-Range (4V, 2V, +4V, +2V), +5V Supply, 12-Bit DAS with 8+4 Bus Interface ABSOLUTE MAXIMUM RATINGS V to AGND............................................................-0.3V to +7V Wide SO (derate 12.50mW/C above +70C)..............1000mW DD AGND to DGND.....................................................-0.3V to +0.3V SSOP (derate 9.52mW/C above +70C) ......................762mW REF to AGND..............................................-0.3V to (V + 0.3V) Narrow Ceramic SB (derate 20.00mW/C above +70C)..1600mW DD REFADJ to AGND.......................................-0.3V to (V + 0.3V) Operating Temperature Ranges DD Digital Inputs to DGND...............................-0.3V to (V + 0.3V) MAX199 C .......................................................0C to +70C DD Digital Outputs to DGND............................-0.3V to (V + 0.3V) MAX199 E .....................................................-40C to +85C DD CH0CH7 to AGND ..........................................................16.5V MAX199 M ..................................................-55C to +125C Continuous Power Dissipation (T = +70C) Storage Temperature Range .............................-65C to +150C A Narrow Plastic DIP (derate 14.29mW/C above +70C)....1143mW Lead Temperature (soldering, 10sec) .............................+300C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (V = 5V 5% unipolar/bipolar range external reference mode, V = 4.096V 4.7F at REF pin external clock, f = 2.0MHz DD REF CLK with 50% duty cycle T = T to T , unless otherwise noted.) A MIN MAX PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS ACCURACY (Note 1) Resolution 12 Bits MAX199A 1/2 Integral Nonlinearity INL LSB MAX199B 1 Differential Nonlinearity DNL 1 LSB MAX199A 3 Unipolar MAX199B 5 Offset Error LSB MAX199A 5 Bipolar MAX199B 10 Unipolar 0.1 Channel-to-Channel Offset LSB Error Matching Bipolar 0.5 MAX199A 7 Unipolar MAX199B 10 Gain Error LSB (Note 2) MAX199A 7 Bipolar MAX199B 10 Unipolar 3 Gain Temperature Coefficient ppm/C (Note 2) Bipolar 5 DYNAMIC SPECIFICATIONS (10kHz sine-wave input, 4.096Vp-p, f = 100ksps) SAMPLE MAX199A 70 Signal-to-Noise + Distortion Ratio SINAD dB MAX199B 69 Total Harmonic Distortion THD Up to the 5th harmonic -85 -78 dB Spurious-Free Dynamic Range SFDR 80 dB Channel-to-Channel Crosstalk 50kHz, V = 4V (Note 3) -86 dB IN Aperture Delay External CLK mode/external acquisition control 15 ns External CLK mode/external acquisition <50 ps control Aperture Jitter Internal CLK mode/internal acquisition 10 ns control (Note 4) 2 MAX199