MAX1393/MAX1396 19-3644 Rev 1 11/05 1.5V to 3.6V, 312.5ksps, 1-Channel True-Differential/ 2-Channel Single-Ended, 12-Bit, SAR ADCs General Description Features The MAX1393/MAX1396 micropower, serial-output, 12- 312.5ksps, 12-Bit Successive-Approximation bit, analog-to-digital converters (ADCs) operate with a Register (SAR) ADCs single power supply from +1.5V to +3.6V. These ADCs Single True-Differential Analog Input Channel feature automatic shutdown, fast wake-up, and a high- speed 3-wire interface. Power consumption is only with Unipolar-/Bipolar-Select Input (MAX1393) 0.734mW (V = +1.5V) at the maximum conversion rate DD Dual Single-Ended Input Channel with Channel- of 312.5ksps. AutoShutdown between conversions Select Input (MAX1396) reduces power consumption at slower throughput rates. 1 LSB INL, 1 LSB DNL, No Missing Codes The MAX1393/MAX1396 require an external reference V that has a wide range from 0.6V to V . The REF DD 2 LSB Total Unadjusted Error (TUE) MAX1393 provides one true-differential analog input 70dB SINAD at 75kHz Input Frequency that accepts signals ranging from 0 to V (unipolar REF mode) or V /2 (bipolar mode). The MAX1396 pro- REF External Reference (0.6V to V ) DD vides two single-ended inputs that accept signals rang- Single-Supply Voltage (+1.5V to +3.6V) ing from 0 to V . Analog conversion results are REF available through a 5MHz 3-wire SPI-/QSPI-/ 0.915mW at 300ksps, 1.8V MICROWIRE-/digital signal processor (DSP)-compati- 0.305mW at 100ksps, 1.8V ble serial interface. Excellent dynamic performance, low voltage, low power, ease of use, and small pack- 3.1W at 1ksps, 1.8V age sizes make these converters ideal for portable bat- < 1A Shutdown Current tery-powered data-acquisition applications, and for other applications that demand low power consumption AutoShutdown Between Conversions and minimal space. SPI-/QSPI-/MICROWIRE-/DSP-Compatible, The MAX1393/MAX1396 are available in a space-saving 3- or 4-Wire Serial Interface (3mm x 3mm) 10-pin TDFN package. The parts operate over the extended (-40C to +85C) and military Small (3mm x 3mm) 10-Pin TDFN Package (-55C to +125C) temperature ranges. Applications Typical Operating Circuit and Pin Configurations appear at end of data sheet. Portable Datalogging Data Acquisition AutoShutdown is a trademark of Maxim Integrated Products, Inc. SPI/QSPI are trademarks of Motorola, Inc. Medical Instruments MICROWIRE is a trademark of National Semiconductor Corp. Battery-Powered Instruments Process Control Ordering Information TOP MARK PART TEMP RANGE PIN-PACKAGE ANALOG INPUTS PKG CODE AOZ MAX1393ETB -40C to +85C 10 TDFN-EP** 1-CH DIFF T1033-1 MAX1393MTB* -55C to +125C 10 TDFN-EP** 1-CH DIFF T1033-1 APC MAX1396ETB -40C to +85C 10 TDFN-EP** 2-CH S/E T1033-1 MAX1396MTB* -55C to +125C 10 TDFN-EP** 2-CH S/E T1033-1 *Future productcontact factory for availability. **EP = Exposed pad. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. EVALUATION KIT AVAILABLE1.5V to 3.6V, 312.5ksps, 1-Channel True-Differential/ 2-Channel Single-Ended, 12-Bit, SAR ADCs ABSOLUTE MAXIMUM RATINGS V to GND..............................................................-0.3V to +4V Operating Temperature Ranges DD SCLK, CS, OE, CH1/CH2, UNI/BIP, MAX139 E ...................................................-40C to +85C DOUT to GND.........................................-0.3V to (V + 0.3V) MAX139 M ................................................-55C to +125C DD AIN+, AIN-, AIN1, AIN2, REF to GND ........-0.3V to (V + 0.3V) Junction Temperature......................................................+150C DD Maximum Current into Any Pin .........................................50mA Storage Temperature Range .............................-60C to +150C Continuous Power Dissipation (T = +70C) Lead Temperature (soldering, 10s) .................................+300C A 10-Pin TDFN (derate 18.5mW/C above +70C) ....1481.5mW 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 = +1.5V to +3.6V, V = V , C = 0.1F, f = 5MHz, T = T to T , unless otherwise noted. Typical values are at DD REF DD REF SCLK A MIN MAX T = +25C.) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC ACCURACY (Note 1) Resolution 12 Bits Integral Nonlinearity INL 1 LSB Differential Nonlinearity DNL No missing code overtemperature 1 LSB Offset Error 0.5 2 LSB Gain Error Offset nulled 0.5 2 LSB Total Unadjusted Error TUE 2 LSB Offset-Error Temperature 0.004 LSB/C Coefficient Gain-Error Temperature 0.001 LSB/C Coefficient Channel-to-Channel Offset MAX1396 only 0.1 LSB Matching Channel-to-Channel Gain MAX1396 only 0.1 LSB Matching Input Common-Mode Rejection CMR V = 0 to V , MAX1393 only 0.1 mV/V CM DD DYNAMIC SPECIFICATIONS (Note 2) V = V = 1.6 70 REF DD Signal-to-Noise Plus Distortion SINAD V = V = 1.82.5 69 dB REF DD V = V = 2.53.6 70 REF DD V = V = 1.6 70.5 REF DD Signal-to-Noise Ratio SNR V = V = 1.82.5 70 71 dB REF DD V = V = 2.53.6 71 REF DD Total Harmonic Distortion THD -83 -75 dBc Spurious-Free Dynamic Range SFDR -85 -76 dBc f = 73kHz at -6.5dBFS, IN1 Intermodulation Distortion IMD -78 dB f = 77kHz at -6.5dBFS IN2 Channel-to-Channel Crosstalk MAX1396 only -70 dB 2 MAX1393/MAX1396