MAX1040/MAX1042/MAX1046/MAX1048 19-3294 Rev 3 3/08 10-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports General Description Features 10-Bit, 225ksps ADC The MAX1040/MAX1042/MAX1046/MAX1048 integrate a Analog Multiplexer with True-Differential multichannel, 10-bit, analog-to-digital converter (ADC) Track/Hold (T/H) and a quad, 10-bit, digital-to-analog converter (DAC) in a Eight Single-Ended Channels or Four single IC. The devices also include a temperature sensor Differential and configurable general-purpose I/O ports (GPIOs) with Channels (Unipolar or Bipolar) a 25MHz SPI-/QSPI-/MICROWIRE-compatible seri- (MAX1040/MAX1042) al interface. The ADC is available in a four or an eight Four Single-Ended Channels or Two Differential Channels (Unipolar or Bipolar) input-channel version. The four DAC outputs settle within (MAX1046/MAX1048) 2.0s, and the ADC has a 225ksps conversion rate. Excellent Accuracy: 0.5 LSB INL, 0.5 LSB All devices include an internal reference (4.096V) provid- DNL, No Missing Codes Over Temperature ing a well-regulated, low-noise reference for both the 10-Bit, Quad, 2s Settling DAC ADC and DAC. Programmable reference modes for the Ultra-Low-Glitch Energy (4nVs) ADC and DAC allow the use of an internal reference, an Power-Up Options from Zero Scale or Full Scale external reference, or a combination of both. Features Excellent Accuracy: 0.5 LSB INL such as an internal 1C accurate temperature sensor, Internal Reference or External Single-Ended/ FIFO, scan modes, programmable internal or external Differential Reference clock modes, data averaging, and AutoShutdown allow Internal Reference Voltage (4.096V) users to minimize both power consumption and proces- Internal 1C Accurate Temperature Sensor sor requirements. The low glitch energy (4nVs) and low On-Chip FIFO Capable of Storing 16 ADC digital feedthrough (0.5nVs) of the integrated quad Conversion Results and One Temperature Result DACs make these devices ideal for digital control of fast- On-Chip Channel-Scan Mode and Internal response closed-loop systems. Data-Averaging Features The devices are guaranteed to operate with a supply volt- Analog Single-Supply Operation: +4.75V to +5.25V age from +4.75V to +5.25V. These devices consume Digital Supply: +2.7V to AV DD 2.5mA at 225ksps throughput, only 22A at 1ksps 25MHz, SPI/QSPI/MICROWIRE Serial Interface throughput, and under 0.2A in the shutdown mode. The AutoShutdown Between Conversions MAX1042/MAX1048 offer four GPIOs that can be config- ured as inputs or outputs. Low-Power ADC 2.5mA at 225ksps The MAX1040/MAX1042/MAX1046/MAX1048 are avail- 22A at 1ksps able in 36-pin thin QFN packages. All devices are speci- 0.2A at Shutdown fied over the -40C to +85C temperature range. Low-Power DAC: 1.5mA Applications Evaluation Kit Available (Order MAX1258EVKIT) Closed-Loop Controls for Optical Components SPI and QSPI are trademarks of Motorola, Inc. and Base Stations MICROWIRE is a trademark of National Semiconductor Corp. System Supervision and Control AutoShutdown is a trademark of Maxim Integrated Products, Inc. Data-Acquisition Systems Pin Configurations appear at end of data sheet. Ordering Information/Selector Guide REF ANALOG SUPPLY RESOLUTION ADC DAC PART PIN-PACKAGE GPIOs VOLTAGE (V) VOLTAGE (V) BITS** CHANNELS CHANNELS MAX1040BETX 36 Thin QFN-EP* 4.096 4.75 to 5.25 10 8 4 0 MAX1042BETX 36 Thin QFN-EP* 4.096 4.75 to 5.25 10 8 4 4 MAX1046BETX 36 Thin QFN-EP* 4.096 4.75 to 5.25 10 4 4 0 MAX1048BETX 36 Thin QFN-EP* 4.096 4.75 to 5.25 10 4 4 4 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 AVAILABLE10-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 can 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 = 4.75V to 5.25V, external reference V = 4.096V, f = 3.6MHz (50% duty cycle), T = -40C to +85C, unless DD DD REF CLK A otherwise noted. Typical values are at AV = DV = 5V, T = +25C. Outputs are unloaded, unless otherwise noted.) DD DD A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS ADC DC ACCURACY (Note 1) Resolution 10 Bits Integral Nonlinearity INL 0.5 1.0 LSB Differential Nonlinearity DNL 0.5 1 LSB Offset Error 0.25 2.0 LSB Gain Error (Note 2) 0.025 2.0 LSB Gain Temperature Coefficient 1.4 ppm/C Channel-to-Channel Offset 0.1 LSB DYNAMIC SPECIFICATIONS (10kHz sine-wave input, V = 4.096V 225ksps, f = 3.6MHz) IN P-P, CLK Signal-to-Noise Plus Distortion SINAD 61 dB Total Harmonic Distortion THD -70 dBc (Up to the Fifth Harmonic) Spurious-Free Dynamic Range SFDR 66 dBc Intermodulation Distortion IMD f = 9.9kHz, f = 10.2kHz 72 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 MAX1040/MAX1042/MAX1046/MAX1048