MAX196/MAX198 19-0435 Rev 0 9/95 Multirange, Single +5V, 12-Bit DAS with 12-Bit Bus Interface General Description Features 12-Bit Resolution, 1/2LSB Linearity The MAX196/MAX198 multirange, 12-bit data-acquisi- tion systems (DAS) require only a single +5V supply for Single +5V Supply Operation operation, yet convert analog signals at their inputs up Software-Selectable Input Ranges: to 10V (MAX196) and 4V (MAX198). These systems 10V, 5V, 0V to +10V, 0V to +5V (MAX196) provide six analog input channels that are indepen- V , V /2, 0V to +V , 0V to +V /2 REF REF REF REF dently software programmable for a variety of ranges: (MAX198) 10V, 5V, 0V to +10V, and 0V to +5V for the MAX196 Internal 4.096V or External Reference V , V /2, 0V to +V , and 0V to +V /2 for REF REF REF REF Fault-Protected Input Multiplexer the MAX198. This range switching increases the effec- 6 Analog Input Channels tive dynamic range to 14 bits and provides the flexibility to interface 12V, 15V, and 4mA to 20mA powered 6s Conversion Time, 100ksps Sampling Rate sensors to a single +5V system. In addition, these con- Internal or External Acquisition Control verters are fault protected to 16.5V a fault condition Two Power-Down Modes on any channel will not affect the conversion result of Internal or External Clock the selected channel. Other features include a 5MHz bandwidth track/hold, 100ksps throughput rate, soft- ware-selectable internal/external clock, internal/external Ordering Information acquisition control, 12-bit parallel interface, and internal PART TEMP. RANGE PIN-PACKAGE 4.096V or external reference. MAX196ACNI 0C to +70C 28 Narrow Plastic DIP Two programmable power-down modes (STBYPD, MAX196BCNI 0C to +70C 28 Narrow Plastic DIP FULLPD) provide low-current shutdown between con- MAX196ACWI 0C to +70C 28 Wide SO versions. In STBYPD mode, the reference buffer remains active, eliminating start-up delays. MAX196BCWI 0C to +70C 28 Wide SO MAX196ACAI 0C to +70C 28 SSOP The MAX196/MAX198 employ a standard microproces- MAX196BCAI 0C to +70C 28 SSOP sor (P) interface. A three-state data I/O port is config- ured to operate with 16-bit data buses, and data- Ordering Information continued at end of data sheet. access and bus-release timing specifications are com- patible with most popular Ps. All logic inputs and out- Pin Configuration puts are TTL/CMOS compatible. TOP VIEW These devices are available in 28-pin DIP, wide SO, SSOP (55% smaller in area than wide SO), and ceramic CLK 1 28 DGND SB packages. For 8+4 bus interface, see the MAX197 CS 2 27 V DD and the MAX199 data sheets. An evaluation kit will be available after December 1995 (MAX196EVKIT-DIP). D11 26 WR 3 D10 25 RD 4 INT D9 5 24 Applications MAX196 D8 6 23 REF MAX198 Industrial-Control Systems D7 7 22 REFADJ Robotics D6 8 21 CH5 Data-Acquisition Systems D5 9 20 CH4 Automatic Testing Systems D4 10 19 CH3 Medical Instruments CH2 D3 11 18 Telecommunications CH1 D2 12 17 D1 13 16 CH0 AGND D0 14 15 DIP/SO/SSOP/Ceramic SB Functional Diagram appears at end of data sheet. Maxim Integrated Products 1 Call toll free 1-800-722-8266 for free samples or literature. EVALUATION KIT AVAILABLEMultirange, Single +5V, 12-Bit DAS with 12-Bit 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) MAX196 C I/MAX198 C I .................................0C to +70C DD Digital Outputs to DGND............................-0.3V to (V + 0.3V) MAX196 E I/MAX198 E I ...............................-40C to +85C DD CH0CH5 to AGND ..........................................................16.5V MAX196 MYI/MAX198 MYI.............................-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, VREF = 4.096V 4.7F at REF pin external clock, fCLK = 2.0MHz DD with 50% duty cycle TA = TMIN to TMAX unless otherwise noted. Typical values are at TA = +25C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS ACCURACY (Note 1) Resolution 12 Bits MAX196A/MAX198A 1/2 Integral Nonlinearity INL LSB MAX196B/MAX198B 1 Differential Nonlinearity DNL 1 LSB MAX196A/MAX198A 3 Unipolar MAX196B/MAX198B 5 Offset Error LSB MAX196A/MAX198A 5 Bipolar MAX196B/MAX198B 10 Unipolar 0.1 Channel-to-Channel Offset LSB Error Matching Bipolar 0.5 MAX196A/MAX198A 7 Unipolar MAX196B/MAX198B 10 Gain Error LSB (Note 2) MAX196A/MAX198A 7 Bipolar MAX196B/MAX198B 10 Unipolar 3 Gain Temperature Coefficient ppm/C (Note 2) Bipolar 5 DYNAMIC SPECIFICATIONS (10kHz sine-wave input, 10Vp-p (MAX196) or 4.096Vp-p (MAX198), f = 100ksps) SAMPLE MAX196A/MAX198A 70 Signal-to-Noise + Distortion Ratio SINAD dB MAX196B/MAX198B 69 Total Harmonic Distortion THD Up to the 5th harmonic -85 -78 dB Spurious-Free Dynamic Range SFDR 80 dB 50kHz, VIN = 5V (MAX196) or 4V (MAX198) Channel-to-Channel Crosstalk -86 dB (Note 3) Aperture Delay External CLK mode/external acquisition control 15 ns External CLK mode/external acquisition control <50 ps Aperture Jitter Internal CLK mode/internal acquisition 10 ns control (Note 4) 2 MAX196/MAX198