MAX1221/MAX1223/MAX1343 19-4010 Rev 1 12/07 12-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports General Description Features The MAX1221/MAX1223/MAX1343 integrate a multichan- 12-Bit, 225ksps ADC Analog Multiplexer with True-Differential nel, 12-bit, analog-to-digital converter (ADC) and a 12-bit, Track/Hold (T/H) digital-to-analog converter (DAC) in a single IC. The 12 Single-Ended Channels or Six Differential devices also include a temperature sensor and config- Channels (Unipolar or Bipolar) (MAX1223) urable general-purpose I/O ports (GPIOs) with a 25MHz Eight Single-Ended Channels or Four Differential SPI-/QSPI-/MICROWIRE-compatible serial inter- Channels (Unipolar or Bipolar) face. The ADC is available in a 12 or an eight input-chan- (MAX1221/MAX1343) nel version. The DAC outputs settle within 2.0s, and the Excellent Accuracy: 0.5 LSB INL, 0.5 LSB DNL ADC has a 225ksps conversion rate. 12-Bit, Octal, 2s Settling DAC All devices include an internal reference (2.5V) providing (MAX1221/MAX1223) a well-regulated, low-noise reference for both the ADC Ultra-Low Glitch Energy (4nVs) and DAC. Programmable reference modes for the ADC Power-Up Options from Zero Scale or Full Scale and DAC allow the use of an internal reference, an exter- Excellent Accuracy: 0.5 LSB INL nal reference, or a combination of both. Features such as Internal Reference or External Single-Ended/ an internal 1C accurate temperature sensor, FIFO, Differential Reference scan modes, programmable internal or external clock Internal Reference Voltage 2.5V modes, data averaging, and AutoShutdown allow users Internal 1C Accurate Temperature Sensor to minimize both power consumption and processor requirements. The low glitch energy (4nVs) and low digi- On-Chip FIFO Capable of Storing 16 ADC Conversion Results and One Temperature Result tal feedthrough (0.5nVs) of the integrated DACs make these devices ideal for digital control of fast-response On-Chip Channel-Scan Mode and Internal closed-loop systems. Data-Averaging Features The devices are guaranteed to operate with a supply volt- Analog Single-Supply Operation age from +2.7V to +5.25V. The devices consume 2.5mA +2.7V to +5.25V at 225ksps throughput, only 22A at 1ksps throughput, 2.7V to AV Digital Supply DD and under 0.2A in the shutdown mode. The MAX1221/ 25MHz, SPI/QSPI/MICROWIRE Serial Interface MAX1343 offer four GPIOs that can be configured as AutoShutdown Between Conversions inputs or outputs. Low-Power ADC The MAX1221/MAX1223/MAX1343 are available in 36-pin 2.5mA at 225ksps thin QFN packages. All devices are specified over the 22A at 1ksps -40C to +85C temperature range. 0.2A at Shutdown Applications Low-Power DAC: 1.5mA Closed-Loop Controls for Optical Components Evaluation Kit Available (Order MAX1258EVKIT) and Base Stations System Supervision and Control SPI and QSPI are trademarks of Motorola, Inc. Data-Acquisition Systems MICROWIRE is a trademark of National Semiconductor Corp. AutoShutdown is a trademark of Maxim Integrated Products, Inc. Pin Configurations appear at end of data sheet. Ordering Information/Selector Guide REF ANALOG RESOLUTION ADC DAC PKG VOLTAGE SUPPLY PART PIN-PACKAGE GPIOs BITS** CHANNELS CHANNELS CODE (V) VOLTAGE (V) MAX1221BETX 36 Thin QFN-EP* 2.5 2.7 to 5.25 12 8 8 4 T3666-3 MAX1223BETX 36 Thin QFN-EP* 2.5 2.7 to 5.25 12 12 8 0 T3666-3 MAX1343BETX 36 Thin QFN-EP* 2.5 2.7 to 5.25 12 8 4 4 T3666-3 Note: All devices are specified over the -40C to +85C operating temperature range. *EP = Exposed pad. **Number of resolution bits refers to both DAC and ADC. Maxim Integrated Products 1 For pricing delivery, and ordering information please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. EVALUATION KIT AVAILABLE12-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports ABSOLUTE MAXIMUM RATINGS AV to AGND .........................................................-0.3V to +6V Maximum Current into OUT .............................................100mA DD DGND to AGND.....................................................-0.3V to +0.3V Continuous Power Dissipation (T = +70C) A DV to AV .......................................................-3.0V to +0.3V 36-Pin Thin QFN (6mm x 6mm) DD DD Digital Inputs to DGND.............................................-0.3V to +6V (derate 26.3mW/C above +70C)......................2105.3mW Digital Outputs to DGND.........................-0.3V to (DV + 0.3V) Operating Temperature Range ...........................-40C to +85C DD Analog Inputs, Analog Outputs and REF Storage Temperature Range .............................-60C to +150C to AGND...............................................-0.3V to (AV + 0.3V) Junction Temperature......................................................+150C DD Maximum Current into Any Pin (except AGND, DGND, AV , Lead Temperature (soldering, 10s) .................................+300C DD DV , and OUT )...........................................................50mA DD Note: If the package power dissipation is not exceeded, one output at a time may be shorted to AV , DV , AGND, or DGND DD DD 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 (AV = DV = 2.7V to 5.25V, external reference V = 2.5V, f = 3.6MHz (50% duty cycle), T = -40C to +85C, unless other- DD DD REF CLK A wise noted. Typical values are at AV = DV = 3V. T = +25C. Outputs are unloaded, unless otherwise noted.) DD DD A 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 0.5 4.0 LSB Gain Error (Note 2) 0.5 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 , 225ksps, f = 3.6MHz) IN P-P 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 2 MAX1221/MAX1223/MAX1343