MAX1082/MAX1083 300ksps/400ksps, Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference General Description Features The MAX1082/MAX1083 10-bit analog-to-digital convert- 4-Channel Single-Ended or 2-Channel ers (ADCs) combine a 4-channel analog-input multiplexer, Pseudo-Differential Inputs high-bandwidth track/hold (T/H), and serial interface with Internal Multiplexer and Track/Hold high conversion speed and low power consumption. The Single-Supply Operation MAX1082 operates from a single +4.5V to +5.5V supply the MAX1083 operates from a single +2.7V to +3.6V sup- +4.5V to +5.5V (MAX1082) ply. Both devices analog inputs are software configurable +2.7V to +3.6V (MAX1083) for unipolar/bipolar and single-ended/pseudo-differential operation. Internal +2.5V Reference The 4-wire serial interface connects directly to SPI/QSPI 400kHz Sampling Rate (MAX1082) and MICROWIRE devices without external logic. A serial Low Power: 2.5mA (400ksps) strobe output allows direct connection to TMS320-family 1.3mA (REDP) digital signal processors. The MAX1082/ MAX1083 use an external serial-interface clock to perform successive- 0.9mA (FASTPD) approximation analog-to-digital conversions. The devices 2A (FULLPD) feature an internal +2.5V reference and a reference-buffer amplifier with a 1.5% voltage-adjustment range. An SPI/QSPI/MICROWIRE/TMS320-Compatible 4-Wire external reference with a 1V to V range may also be DD Serial Interface used. Software-Configurable Unipolar or Bipolar Inputs The MAX1082/MAX1083 provide a hard-wired SHDN pin 16-Pin TSSOP Package and four software-selectable power modes (normal opera- tion, reduced power (REDP), fast power-down (FASTPD), Ordering Information and full power-down (FULLPD)). These devices can be programmed to shut down automatically at the end of a PIN- INL PART TEMP RANGE conversion or to operate with reduced power. When using PACKAGE (LSB) the power-down modes, accessing the serial interface MAX1082ACUE+ 0C to +70C 16 TSSOP 1/2 automatically powers up the devices, and the quick turn- MAX1082BCUE+ 0C to +70C 16 TSSOP 1 on time allows them to be shut down between all conver- MAX1082AEUE+ -40C to +85C 16 TSSOP 1/2 sions. MAX1082BEUE+ -40C to +85C 16 TSSOP 1 The MAX1082/MAX1083 are available in 16-pin TSSOP +Denotes a lead(Pb)-free/RoHS-compliant package. packages. Ordering Information continued at end of data sheet. Applications Portable Data Logging Pin Configuration Data Acquisition TOP VIEW Medical Instruments + Battery-Powered Instruments 1 V 16 V DD1 DD2 Pen Digitizers CH0 2 15 SCLK Process Control CH1 3 14 CS CH2 4 MAX1082 13 DIN MAX1083 CH3 5 12 SSTRB COM 6 11 DOUT SHDN 7 10 GND Typical Operating Circuit appears at end of data sheet. REF 8 9 REFADJ QSPI is a trademark of Motorola, Inc. TSSOP MICROWIRE is a registered trademark of National Semiconductor Corp. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maximintegrated.com. 19-1690 Rev 2 12/14MAX1082/MAX1083 300ksps/400ksps, Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference ABSOLUTE MAXIMUM RATINGS V to GND............................................................ -0.3V to +6V Continuous Power Dissipation (T = +70C) DD A V to V ....................................................... -0.3V to +0.3V 16-Pin TSSOP (derate 6.7mW/C above +70C) ........ 533mW DD DD2 CH0CH3, COM to GND ........................... -0.3V to (V + 0.3V) Operating Temperature Ranges DD REF, REFADJ to GND................................ -0.3V to (V + 0.3V) MAX1082 C E/MAX1083 CUE ......................... 0C to +70C DD Digital Inputs to GND .............................................. -0.3V to +6V MAX1082 E E/MAX1083 EUE....................... -40C to +85C Digital Outputs to GND.............................. -0.3V to (V + 0.3V) Storage Temperature Range ............................ -60C to +150C DD Digital Output Sink Current .................................................25mA Lead Temperature (soldering, 10s) ................................ +300C Soldering Temperature (reflow)..........................................260C 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 CHARACTERISTICSMAX1082 (V = V = +4.5V to +5.5V, COM = GND, f = 6.4MHz, 50% duty cycle, 16 clocks/conversion cycle (400ksps), external +2.5V DD1 DD2 OSC at REF, REFADJ = V T = T to T , unless otherwise noted. Typical values are at T = +25C.) A MIN MAX A DD1, PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC ACCURACY (Note 1) Resolution 10 bits MAX1082A 0.5 Relative Accuracy (Note 2) INL LSB MAX1083B 1.0 Differential Nonlinearity DNL No missing codes over temperature 1.0 LSB Offset Error 3.0 LSB Gain Error (Note 3) 3.0 LSB Gain-Error Temperature 1.6 ppm/C Coefficient Channel-to-Channel Offset-Error 0.2 LSB Matching DYNAMIC SPECIFICATIONS (100kHz sine-wave input, 2.5Vp-p, 400ksps, 6.4MHz clock, bipolar input mode) Signal-to-Noise plus Distortion SINAD 60 dB Ratio Total Harmonic Distortion THD Up to the 5th harmonic -70 dB Spurious-Free Dynamic Range SFDR 70 dB Intermodulation Distortion IMD f = 99kHz, f =102kHz 76 dB IN1 IN2 Channel-to-Channel Crosstalk 200kHz, V = 2.5Vp-p -78 dB IN (Note 4) Full-Power Bandwidth -3dB point 6 MHz Full-Linear Bandwidth SINAD > 58dB 350 kHz CONVERSION RATE Conversion Time (Note 5) t 2.5 s CONV Track/Hold Acquisition Time t 400 ns ACQ Aperture Delay 10 ns Aperture Jitter <50 ps Serial Clock Frequency f 0.5 6.4 MHz SCLK Duty Cycle 40 60 % 2 Maxim Integrated