MAX115/MAX116 19-1928 Rev 0 1/01 2x4-Channel, Simultaneous-Sampling 12-Bit ADCs General Description Features The MAX115/MAX116 are high-speed, multichannel, Four Simultaneous-Sampling T/H Amplifiers with 12-bit data-acquisition systems (DAS) with simultane- Two Multiplexed Inputs (Eight Single-Ended ous track/holds (T/Hs). These devices contain a 12-bit, Inputs Total) 2s, successive-approximation analog-to-digital con- 2s Conversion Time per Channel verter (ADC), a +2.5V reference, a buffered reference input, and a bank of four simultaneous-sampling T/H Throughput: 390ksps (1 Channel) amplifiers that preserve the relative phase information 218ksps (2 Channels) of the sampled inputs. The MAX115/MAX116 have two 152ksps (3 Channels) multiplexed inputs for each T/H, allowing a total of eight 116ksps (4 Channels) inputs. In addition, the converter is overvoltage tolerant to 17V. A fault condition on any channel will not dam- Input Range: 5V (MAX115) age the IC. Available input ranges are 5V (MAX115) 2.5V (MAX116) and 2.5V (MAX116). Fault-Protected Input Multiplexer (17V) The parallel interfaces data access and bus release Internal +2.5V or External Reference Operation timing specifications are compatible with most popular digital signal processors and 16-bit/32-bit microproces- Programmable On-Board Sequencer sors. The MAX115/MAX116 conversion results can be High-Speed Parallel DSP Interface accessed without resorting to wait-states. Internal 10MHz Clock Applications Ordering Information Multiphase Motor Control PART TEMP. RANGE PIN-PACKAGE Power-Grid Synchronization MAX115CAX 0C to +70C 36 SSOP Power-Factor Monitoring MAX115EAX -40C to +85C 36 SSOP Digital Signal Processing MAX116CAX 0C to +70C 36 SSOP MAX116EAX -40C to +85C 36 SSOP Vibration and Waveform Analysis Typical Operating Circuit Pin Configuration TOP VIEW A0 CH1A CH2B 1 36 AGND A1 CH1B CH2A 2 35 CH3B D0/A2 CH2A D1/A3 CH1B 3 34 CH3A CH2B D2 CH3A 33 CH1A 4 CH4B D3 CH3B D4 AVDD 5 32 CH4A CH4A MAX115 MAX115 D5 REFIN 6 31 AV CH4B MAX116 SS MAX116 D6 REFOUT 7 30 INT +5V AV D7 DD AGND 8 29 CONVST 0.1 F D8 D9 D11 (MSB) 9 28 RD AGND D10 0.1 F D10 10 27 WR D11 AV -5V SS D9 11 26 CS +5V REFIN DV DD D8 12 25 CLK 0.1 F 13 24 A0 D7 0.1 F D6 14 23 A1 REFOUT DGND D5 15 22 D0/A2 (LSB) 4.7 F D4 16 21 D1/A3 CLK CONVST INT CS RD WR DV 17 20 D2 DD 16MHz DGND 18 19 D3 CONTROL INTERFACE SSOP Maxim Integrated Products 1 For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. EVALUATION KIT AVAILABLE2x4-Channel, Simultaneous-Sampling 12-Bit ADCs ABSOLUTE MAXIMUM RATINGS AV to AGND ...........................................................-0.3V to 6V Continuous Power Dissipation (T = +70C) DD A AV to AGND ............................................................0.3V to -6V 36-Pin SSOP (derate 11.8mW/C above +70C) ..........941mW SS DV to DGND ...........................................................-0.3V to 6V Operating Temperature Ranges DD AGND to DGND.......................................................-0.3V to 0.3V MAX115 CAX/MAX116 CAX...............................0C to +70C CH to AGND....................................................................17V MAX115 EAX/MAX116 EAX ............................-40C to +85C REFIN, REFOUT to AGND ..........................................-0.3V to 6V Junction Temperature......................................................+150C Digital Inputs/Outputs to DGND ..............-0.3V to (DV + 0.3V) Storage Temperature Range .............................-65C to +150C DD Lead Temperature (soldering, 10s)....................................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 (AV = +5V 5%, AV = -5V 5%, DV = +5V 5%, V = +2.5V (external reference), AGND = DGND = 0, 4.7F capacitor DD SS DD REFIN from REFOUT to AGND, 0.1F capacitor from REFIN to AGND, f = 16MHz, external clock, 50% duty cycle. T = T to T , CLK A MIN MAX unless otherwise noted. Typical values are at T = +25C.) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC ACCURACY (Note 1) Resolution N All channels 12 Bits Integral Nonlinearity (Note 2) INL 0.6 1 LSB Differential Nonlinearity DNL 0.6 1 LSB T = +25C 5 15 A MAX115 T = T to T 30 A MIN MAX Bipolar Zero Error mV T = +25C 5 10 A MAX116 T = T to T 18 A MIN MAX Bipolar Zero-Error Match Between all channels 25 mV MAX115 180 Zero-Code Tempco V/C MAX116 90 T = +25C 5 15 A MAX115 T = T to T 25 A MIN MAX Gain Error mV T = +25C 5 10 A MAX116 T = T to T 18 A MIN MAX Gain Error Match 25 mV MAX115 120 Gain Error Tempco V/C MAX116 60 DYNAMIC PERFORMANCE (f = 16MHz, f = 10.06kHz) (Notes 1, 3) CLK IN Signal-to-Noise Ratio SNR (Note 4) 69 dB Total Harmonic Distortion THD (Notes 4, 5) -80 dB Spurious-Free Dynamic Range SFDR (Note 4) 80 dB Channel-to-Channel Isolation (Note 6) 80 dB 2 MAX115/MAX116