MAX198BCAI

19-0435; Rev 0; 9/95 KIT ATION EVALU E L B A IL AVA Multirange, Single +5V, 12-Bit DAS with 12-Bit Bus Interface ________________________Applications Industrial-Control Systems Robotics Data-Acquisition Systems Automatic Testing Systems Medical Instruments Telecommunications Functional Diagram appears at end of data sheet. ____________________________Features ♦ 12-Bit Resolution, 1/2LSB Linearity ♦ Single +5V Supply Operation ♦ Software-Selectable Input Ranges: ±10V, ±5V, 0V to +10V, 0V to +5V (MAX196) ±VREF, ±VREF/2, 0V to +VREF, 0V to +VREF/2 (MAX198) ♦ Internal 4.096V or External Reference ♦ Fault-Protected Input Multiplexer ♦ 6 Analog Input Channels ♦ 6µs Conversion Time, 100ksps Sampling Rate ♦ Internal or External Acquisition Control ♦ Two Power-Down Modes ♦ Internal or External Clock ______________Ordering Information PART TEMP. RANGE MAX196ACNI 0°C to +70°C PIN-PACKAGE 28 Narrow Plastic DIP MAX196BCNI MAX196ACWI MAX196BCWI MAX196ACAI MAX196BCAI 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C 28 Narrow Plastic DIP 28 Wide SO 28 Wide SO 28 SSOP 28 SSOP Ordering Information continued at end of data sheet. __________________Pin Configuration TOP VIEW CLK 1 28 DGND CS 2 27 V DD D11 3 26 WR D10 4 25 RD D9 5 D8 6 MAX196 MAX198 D7 7 24 INT 23 REF 22 REFADJ D6 8 21 CH5 D5 9 20 CH4 D4 10 19 CH3 D3 11 18 CH2 D2 12 17 CH1 D1 13 16 CH0 D0 14 15 AGND DIP/SO/SSOP/Ceramic SB ________________________________________________________________ Maxim Integrated Products Call toll free 1-800-722-8266 for free samples or literature. 1 MAX196/MAX198 _______________General Description The MAX196/MAX198 multirange, 12-bit data-acquisition systems (DAS) require only a single +5V supply for operation, yet convert analog signals at their inputs up to ±10V (MAX196) and ±4V (MAX198). These systems provide six analog input channels that are independently software programmable for a variety of ranges: ±10V, ±5V, 0V to +10V, and 0V to +5V for the MAX196; ±VREF, ±VREF/2, 0V to +VREF, and 0V to +VREF/2 for the MAX198. This range switching increases the effective dynamic range to 14 bits and provides the flexibility to interface ±12V, ±15V, and 4mA to 20mA powered sensors to a single +5V system. In addition, these converters are fault protected to ±16.5V; a fault condition on any channel will not affect the conversion result of the selected channel. Other features include a 5MHz bandwidth track/hold, 100ksps throughput rate, software-selectable internal/external clock, internal/external acquisition control, 12-bit parallel interface, and internal 4.096V or external reference. Two programmable power-down modes (STBYPD, FULLPD) provide low-current shutdown between conversions. In STBYPD mode, the reference buffer remains active, eliminating start-up delays. The MAX196/MAX198 employ a standard microprocessor (µP) interface. A three-state data I/O port is configured to operate with 16-bit data buses, and dataaccess and bus-release timing specifications are compatible with most popular µPs. All logic inputs and outputs are TTL/CMOS compatible. These devices are available in 28-pin DIP, wide SO, SSOP (55% smaller in area than wide SO), and ceramic SB packages. For 8+4 bus interface, see the MAX197 and the MAX199 data sheets. An evaluation kit will be available after December 1995 (MAX196EVKIT-DIP). MAX196/MAX198 Multirange, Single +5V, 12-Bit DAS with 12-Bit Bus Interface ABSOLUTE MAXIMUM RATINGS VDD to AGND............................................................-0.3V to +7V AGND to DGND.....................................................-0.3V to +0.3V REF to AGND..............................................-0.3V to (VDD + 0.3V) REFADJ to AGND.......................................-0.3V to (VDD + 0.3V) Digital Inputs to DGND...............................-0.3V to (VDD + 0.3V) Digital Outputs to DGND ............................-0.3V to (VDD + 0.3V) CH0–CH5 to AGND ..........................................................±16.5V Continuous Power Dissipation (TA = +70°C) Narrow Plastic DIP (derate 14.29mW/°C above +70°C)....1143mW Wide SO (derate 12.50mW/°C above +70°C)..............1000mW SSOP (derate 9.52mW/°C above +70°C) ......................762mW Narrow Ceramic SB (derate 20.00mW/°C above +70°C)..1600mW Operating Temperature Ranges MAX196_C_ I/MAX198_C_ I .................................0°C to +70°C MAX196_E_ I/MAX198_E_ I ...............................-40°C to +85°C MAX196_MYI/MAX198_MYI.............................-55°C to +125°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10sec) .............................+300°C 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 (VDD = 5V ±5%; unipolar/bipolar range; external reference mode, VREF = 4.096V; 4.7µF at REF pin; external clock, fCLK = 2.0MHz with 50% duty cycle; TA = TMIN to TMAX; unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS ACCURACY (Note 1) Resolution 12 Integral Nonlinearity INL Differential Nonlinearity DNL ±1/2 MAX196B/MAX198B ±1 ±1 Unipolar Offset Error Bipolar Channel-to-Channel Offset Error Matching MAX196A/MAX198A ±3 MAX196B/MAX198B ±5 MAX196A/MAX198A ±5 MAX196B/MAX198B ±0.1 Bipolar ±0.5 Unipolar Bipolar LSB LSB LSB ±10 Unipolar Gain Error (Note 2) Gain Temperature Coefficient (Note 2) Bits MAX196A/MAX198A LSB MAX196A/MAX198A ±7 MAX196B/MAX198B ±10 MAX196A/MAX198A ±7 MAX196B/MAX198B LSB ±10 Unipolar 3 Bipolar 5 ppm/°C DYNAMIC SPECIFICATIONS (10kHz sine-wave input, ±10Vp-p (MAX196) or ±4.096Vp-p (MAX198), fSAMPLE = 100ksps) Signal-to-Noise + Distortion Ratio SINAD Total Harmonic Distortion THD Spurious-Free Dynamic Range SFDR MAX196A/MAX198A 70 MAX196B/MAX198B 69 Up to the 5th harmonic dB -85 80 -78 dB dB Channel-to-Channel Crosstalk 50kHz, VIN = ±5V (MAX196) or ±4V (MAX198) (Note 3) Aperture Delay External CLK mode/external acquisition control 15 ns External CLK mode/external acquisition control