EVALUATION KIT AVAILABLE 12-Bit, Multichannel ADCs/DACs MAX1220/MAX1257/MAX1258 with FIFO, Temperature Sensing, and GPIO Ports General Description Benefits and Features The MAX1220/MAX1257/MAX1258 is a highly integrat- Reduce Parts Count and Board Space with Fully ed system monitoring and control solution which Integrated System Monitor and Controller includes a 16-channel (MAX1257/MAX1258) or 8-ch Monitors 8 (MAX1220) or 16 Voltages (MAX1220) 12-bit Analog to Digital Converter (ADC), (MAX1257/MAX1258) Using 12-Bit, 225ksps ADC twelve 12-bit Digital to Analog Converters (DACs), an Controls 8 Output Voltage Level with 12-Bit, Octal, internal reference, an internal temp sensor, a 4-bit 2s Settling DAC with Ultra-Low Glitch Energy (MAX1220) or 12-bit (MAX1257/MAX1258) GPIO port, (4n x VS) and a 25MHz SPI-/QSPI-/MICROWIRE - compatible serial interface. Measures Temperature with Internal 1C Accurate Temperature Sensor The MAX1220 is available in a 36-pin TQFN package. The MAX1257/MAX1258 are available in 48-pin TQFN Options for Using Either Internal 2.5V (MAX1257) package. All devices are specified over the -40C to Reference, 4.096V (MAX1220/MAX1258) +85C temperature range. Reference or External Reference Includes 4 (MAX1220) or 12 (MAX1257/1258) Applications GPIOs Controls for Optical Components Lower Processor Requirements and Minimize Power Base-Station Control Loops Consumption and Heat Dissipation System Supervision and Control On-Chip FIFO, Channel-Scan Mode and Data Data-Acquisition Systems Averaging Functional Diagram Autoshutdown Between Conversions GPIOA0 GPIOB0 GPIOC0 AVDD DVDD Low-Power ADC GPIOA3 GPIOB3 GPIOC3 MAX1257 2.5mA at 225ksps MAX1258 12-BIT OUTPUT USER-PROGRAMMABLE OUT0 22A at 1ksps CONDITIONING DAC I/O Low-Power DAC: 1.5mA OSCILLATOR OUT1 SPI SCLK PORT TQFN Package with Exposed Pad AND OUT2 CS LOGIC Enable Maximum Dynamic Range with Availability of DIN CNTRL OUT3 DOUT R 2 Analog Power Supply Options: +2.7V to +3.6V E TEMPERATURE G (MAX1257) or +4.75V to +5.25V OUT4 I SENSOR S (MAX1220/MAX1258) EOC T OUT5 E R S AIN0 OUT6 12-BIT 12-BIT OUTPUT SAR T/H QSPI is a trademark of Motorola, Inc. AIN13 FIFO AND OUT7 CONDITIONING DAC ADC ALU REF2/ MICROWIRE is a registered trademark of National AIN14 CNVST/ Semiconductor Corp. AIN15 AutoShutdown is a trademark of Maxim Integrated Products, Inc. REFERENCE REF1 LDAC AGND DGND RES SEL Pin Configurations appear at end of data sheet. Ordering Information/Selector Guide REF ANALOG RESOLUTION ADC DAC PART PIN-PACKAGE VOLTAGE SUPPLY GPIOs BITS** CHANNELS CHANNELS (V) VOLTAGE (V) MAX1220BETX+ 36 Thin QFN-EP* 4.096 4.75 to 5.25 12 8 8 4 MAX1257BETM+ 48 Thin QFN-EP* 2.5 2.7 to 3.6 12 16 8 12 MAX1258BETM+ 48 Thin QFN-EP* 4.096 4.75 to 5.25 12 16 8 12 Note: All devices are specified over the -40C to +85C *EP = Exposed pad. operating range. **Number of resolution bits refers to both DAC and ADC. +Denotes a lead(Pb)-free/RoHS-compliant package. 19-3295 Rev 8 1/1512-Bit, Multichannel ADCs/DACs MAX1220/MAX1257/MAX1258 with FIFO, Temperature Sensing, and GPIO Ports Absolute Maximum Ratings AVDD to AGND ........................................................-0.3V to +6V Continuous Power Dissipation (multilayer board, T = +70C) A DGND to AGND.....................................................-0.3V to +0.3V 36-Pin TQFN (6mm x 6mm) DVDD to AVDD......................................................-3.0V to +0.3V (derate 35.7mW/C above +70C)......................2857.1mW Digital Inputs to DGND.............................................-0.3V to +6V 48-Pin TQFN (7mm x 7mm) Digital Outputs to DGND........................-0.3V to (V + 0.3V) (derate 40mW/C above +70C)............................3200mW DVDD Analog Inputs, Analog Outputs and REF Operating Temperature Range ...........................-40C to +85C to AGND .............................................-0.3V to (V + 0.3V) Storage Temperature Range .............................-60C to +150C AVDD Maximum Current into Any Pin (except AGND, DGND, AVDD, Junction Temperature......................................................+150C DVDD, and OUT )...........................................................50mA Lead Temperature (soldering, 10s) .................................+300C Maximum Current into OUT .............................................100mA Soldering Temperature ...................................................+260C Note: If the package power dissipation is not exceeded, one output at a time may be shorted to AVDD, DVDD, AGND, or DGND indefinitely. 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 = V = 2.7V to 3.6V (MAX1257), external reference V = 2.5V (MAX1257), V = 4.75V to 5.25V, V = 2.7V to V AVDD DVDD REF AVDD DVDD AVDD (MAX1220/MAX1258), external reference V = 4.096V (MAX1220/MAX1258), f = 3.6MHz (50% duty cycle), T = -40C to +85C, REF CLK A unless otherwise noted. Typical values are at V = V = 3V (MAX1257), V = V = 5V (MAX1220/MAX1258), T = +25C. AVDD DVDD AVDD DVDD A Outputs are unloaded, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS ADC DC ACCURACY (Note 1) Resolution 12 Bits Integral Nonlinearity INL 0.5 1.0 LSB Differential Nonlinearity DNL 0.5 1.0 LSB Offset Error 1 4.0 LSB Gain Error (Note 2) 0.1 4.0 LSB Gain Temperature Coefficient 0.8 ppm/C Channel-to-Channel Offset 0.1 LSB DYNAMIC SPECIFICATIONS (10kHz sine-wave input, V = 2.5V (MAX1257), V = 4.096V (MAX1220/MAX1258), IN P-P IN P-P 225ksps, f = 3.6MHz) CLK Signal-to-Noise Plus Distortion SINAD 70 dB Total Harmonic Distortion THD -76 dBc (Up to the Fifth Harmonic) Spurious-Free Dynamic Range SFDR 72 dBc Intermodulation Distortion IMD f = 9.9kHz, f = 10.2kHz 76 dBc IN1 IN2 Full-Linear Bandwidth SINAD > 70dB 100 kHz Full-Power Bandwidth -3dB point 1 MHz CONVERSION RATE (Note 3) External reference 0.8 s C onversi on Power-Up Time t PU Internal reference (Note 4) 218 cloc k cycles www.maximintegrated.com Maxim Integrated 2