MAX1042BETX

19-3294; Rev 1; 8/04 KIT ATION EVALU E AILABL AV 10-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports General Description The MAX1040–MAX1043/MAX1046–MAX1049 integrate a multichannel, 10-bit, analog-to-digital converter (ADC) and a quad, 10-bit, digital-to-analog converter (DAC) in a single IC. The devices also include a temperature sensor and configurable general-purpose I/O ports (GPIOs) with a 25MHz SPI™-/QSPI™-/MICROWIRE™-compatible serial interface. The ADC is available in a 4 or an 8 inputchannel version. The four DAC outputs settle within 2.0µs, and the ADC has a 300ksps conversion rate. All devices include an internal reference (2.5V or 4.096V) providing a well-regulated, low-noise reference for both the ADC and DAC. Programmable reference modes for the ADC and DAC allow the use of an internal reference, an external reference, or a combination of both. Features such as an internal ±1°C accurate temperature sensor, FIFO, scan modes, programmable internal or external clock modes, data averaging, and AutoShutdown™ allow users to minimize both power consumption and processor requirements. The low glitch energy (4nV•s) and low digital feedthrough (0.5nV •s) of the integrated quad DACs make these devices ideal for digital control of fastresponse closed-loop systems. The devices are guaranteed to operate with a supply voltage from +2.7V to +3.6V (MAX1041/MAX1043/MAX1047/ MAX1049) and from +4.75V to +5.25V (MAX1040/ MAX1042/MAX1046/MAX1048). These devices consume 2.5mA at 300ksps throughput, only 22µA at 1ksps throughput, and under 0.2µA in the shutdown mode. The MAX1042/MAX1043/MAX1048/MAX1049 offer four GPIOs that can be configured as inputs or outputs. The MAX1040–MAX1043/MAX1046–MAX1049 are available in 36-pin thin QFN packages. All devices are specified over the -40°C to +85°C temperature range. Features ♦ 10-Bit, 300ksps ADC Analog Multiplexer with True-Differential Track/Hold (T/H) 8 Single-Ended Channels or 4 Differential Channels (Unipolar or Bipolar) 4 Single-Ended Channels or 2 Differential Channels (Unipolar or Bipolar) Excellent Accuracy: ±0.5 LSB INL, ±0.5 LSB DNL, No Missing Codes Over Temperature ♦ 10-Bit, Quad, 2µs Settling DAC Ultra-Low-Glitch Energy (4nV•s) Power-Up Options from Zero Scale or Full Scale Excellent Accuracy: ±0.5 LSB INL ♦ Internal Reference or External Single-Ended/ Differential Reference Internal Reference Voltage 2.5V or 4.096V ♦ Internal ±1°C Accurate Temperature Sensor ♦ On-Chip FIFO Capable of Storing 16 ADC Conversion Results and One Temperature Result ♦ On-Chip Channel-Scan Mode and Internal Data-Averaging Features ♦ Analog Single-Supply Operation +2.7V to +3.6V or +4.75V to +5.25V ♦ 25MHz, SPI/QSPI/MICROWIRE Serial Interface ♦ AutoShutdown Between Conversions ♦ Low-Power ADC 2.5mA at 300ksps 22µA at 1ksps 0.2µA at Shutdown ♦ Low-Power DAC: 1.5µA ♦ Evaluation Kit Available (Order MAX1258EVKIT) MAX1040–MAX1043/MAX1046–MAX1049 Applications Closed-Loop Controls for Optical Components and Base Stations System Supervision and Control Data-Acquisition Systems SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp. AutoShutdown is a trademark of Maxim Integrated Products, Inc. Ordering Information/Selector Guide PART MAX1040BETX MAX1041BETX* MAX1042BETX TEMP RANGE -40°C to +85°C -40°C to +85°C -40°C to +85°C PIN-PACKAGE 36 Thin QFN-EP** 36 Thin QFN-EP** 36 Thin QFN-EP** REF ANALOG RESOLUTION ADC DAC VOLTAGE SUPPLY GPIOs CHANNELS CHANNELS BITS*** (V) VOLTAGE (V) 4.096 2.5 4.096 2.5 4.75 to 5.25 2.7 to 3.6 4.75 to 5.25 10 10 10 8 8 8 4 4 4 0 0 4 MAX1043BETX* -40°C to +85°C 36 Thin QFN-EP** *Future product—contact factory for availability. **EP = Exposed pad. ***Number of resolution bits refers to both DAC and ADC. 2.7 to 3.6 10 8 4 4 Ordering Information/Selector Guide continued on last page. Pin Configurations appear at end of data sheet. ________________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 10-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports MAX1040–MAX1043/MAX1046–MAX1049 ABSOLUTE MAXIMUM RATINGS AVDD to AGND .........................................................-0.3V to +6V DGND to AGND.....................................................-0.3V to +0.3V DVDD to AVDD .......................................................-3.0V to +0.3V Digital Inputs to DGND.............................................-0.3V to +6V Digital Outputs to DGND .........................-0.3V to (DVDD + 0.3V) Analog Inputs, Analog Outputs and REF_ to AGND ...............................................-0.3V to (AVDD + 0.3V) Maximum Current into Any Pin (except AGND, DGND, AVDD, DVDD, and OUT_) ...........................................................50mA Maximum Current into OUT_.............................................100mA Continuous Power Dissipation (TA = +70°C) 36-Pin Thin QFN (6mm x 6mm) (derate 26.3mW/°C above +70°C) ..........................2105.3mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range .............................-60°C to +150°C Junction Temperature ......................................................+150°C Lead Temperature (soldering, 10s) .................................+300°C Note: If the package power dissipation is not exceeded, one output at a time can 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 (AVDD = DVDD = 2.7V to 3.6V (MAX1041/MAX1043/MAX1047/MAX1049), external reference VREF = 2.5V (MAX1041/MAX1043/ MAX1047/MAX1049), AVDD = DVDD = 4.75V to 5.25V (MAX1040/MAX1042/MAX1046/MAX1048), external reference VREF = 4.096V (MAX1040/MAX1042/MAX1046/MAX1048), fSCLK = 4.8MHz (50% duty cycle), TA = -40°C to +85°C, unless otherwise noted. Typical values are at AV DD = DV DD = 3V (MAX1041/MAX1043/MAX1047/MAX1049), AV DD = DV DD = 5V (MAX1040/MAX1042/ MAX1046/MAX1048), TA = +25°C. Outputs are unloaded, unless otherwise noted.) PARAMETER DC ACCURACY (Note 1) Resolution Integral Nonlinearity Differential Nonlinearity Offset Error Gain Error Gain Temperature Coefficient Channel-to-Channel Offset (Note 2) INL DNL 10 ±0.5 ±0.5 ±0.25 ±0.025 ±1.4 ±0.1 ±1.0 ±1 ±2.0 ±2.0 Bits LSB LSB LSB LSB ppm/°C LSB SYMBOL CONDITIONS ADC MIN TYP MAX UNITS DYNAMIC SPECIFICATIONS (10kHz sine wave input, VIN = 2.5VP-P (MAX1041/MAX1043/MAX1047/MAX1049), VIN = 4.096VP-P (MAX1040/MAX1042/MAX1046/MAX1048), 300ksps, fSCLK = 4.8MHz) Signal-to-Noise Plus Distortion Total Harmonic Distortion (Up to the Fifth Harmonic) Spurious-Free Dynamic Range Intermodulation Distortion Full-Linear Bandwidth Full-Power Bandwidth CONVERSION RATE (Note 3) External reference Power-Up Time tPU Internal reference (Note 4) 0.8 218 µs Conversion clock cycles SINAD THD SFDR IMD fIN1 = 9.9kHz, fIN2 = 10.2kHz SINAD > 70dB -3dB point 61 -70 66 72 100 1 dB dBc dBc dBc kHz MHz 2 _______________________________________________________________________________________ 10-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports ELECTRICAL CHARACTERISTICS (continued) (AVDD = DVDD = 2.7V to 3.6V (MAX1041/MAX1043/MAX1047/MAX1049), external reference VREF = 2.5V (MAX1041/MAX1043/ MAX1047/MAX1049), AVDD = DVDD = 4.75V to 5.25V (MAX1040/MAX1042/MAX1046/MAX1048), external reference VREF = 4.096V (MAX1040/MAX1042/MAX1046/MAX1048), fSCLK = 4.8MHz (50% duty cycle), TA = -40°C to +85°C, unless otherwise noted. Typical values are at AV DD = DV DD = 3V (MAX1041/MAX1043/MAX1047/MAX1049), AV DD = DV DD = 5V (MAX1040/MAX1042/ MAX1046/MAX1048), TA = +25°C. Outputs are unloaded, unless otherwise noted.) PARAMETER Acquisition Time Conversion Time Internal Clock Frequency External Clock Frequency Duty Cycle Aperture Delay Aperture Jitter ANALOG INPUTS Input Voltage Range (Note 6) Input Leakage Current Input Capacitance INTERNAL TEMPERATURE SENSOR Measurement Error (Notes 5, 7) Temperature Resolution INTERNAL REFERENCE REF1 Output Voltage REF1 Voltage Temperature Coefficient REF1 Output Impedance VREF = 2.5V (MAX1041/MAX1043/ MAX1047/MAX1049) REF1 Short-Circuit Current VREF = 4.096V (MAX1040/MAX1042/ MAX1046/MAX1048) EXTERNAL REFERENCE REF1 Input Voltage Range REF2 Input Voltage Range (Note 4) VREF1 REF mode 11 (Note 4) REF mode 01 REF mode 11 1 1 0 AVDD + 0.05 AVDD + 0.05 1 V 0.63 TCREF MAX1041/MAX1043/MAX1047/MAX1049 MAX1040/MAX1042/MAX1046/MAX1048 2.482 4.066 2.50 4.096 ±30 6.5 0.39 mA 2.518 4.126 V ppm/°C kΩ TA = +25°C TA = TMIN to TMAX ±0.7 ±1.0 1/8 ±3.0 °C °C/LSB Unipolar Bipolar 0 -VREF / 2 ±0.01 24 VREF VREF / 2 ±1 V µA pF fCLK SYMBOL tACQ tCONV (Note 5) Internally clocked Externally clocked Internally clocked conversion Externally clocked conversion (Note 5) 0.1 40 30