MAX1083AEUE+

MAX1082/MAX1083 300ksps/400ksps, Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference General Description Features The MAX1082/MAX1083 10-bit analog-to-digital converters (ADCs) combine a 4-channel analog-input multiplexer, high-bandwidth track/hold (T/H), and serial interface with high conversion speed and low power consumption. The MAX1082 operates from a single +4.5V to +5.5V supply; the MAX1083 operates from a single +2.7V to +3.6V supply. Both devices’ analog inputs are software configurable for unipolar/bipolar and single-ended/pseudo-differential operation. The 4-wire serial interface connects directly to SPI/QSPI™ and MICROWIRE® devices without external logic. A serial strobe output allows direct connection to TMS320-family digital signal processors. The MAX1082/ MAX1083 use an external serial-interface clock to perform successiveapproximation analog-to-digital conversions. The devices feature an internal +2.5V reference and a reference-buffer amplifier with a ±1.5% voltage-adjustment range. An external reference with a 1V to VDD range may also be used. The MAX1082/MAX1083 provide a hard-wired SHDN pin and four software-selectable power modes (normal operation, reduced power (REDP), fast power-down (FASTPD), and full power-down (FULLPD)). These devices can be programmed to shut down automatically at the end of a conversion or to operate with reduced power. When using the power-down modes, accessing the serial interface automatically powers up the devices, and the quick turnon time allows them to be shut down between all conversions. o 4-Channel Single-Ended or 2-Channel Pseudo-Differential Inputs The MAX1082/MAX1083 are available in 16-pin TSSOP packages. MAX1082BEUE+ -40°C to +85°C 16 TSSOP +Denotes a lead(Pb)-free/RoHS-compliant package. Applications o Internal Multiplexer and Track/Hold o Single-Supply Operation +4.5V to +5.5V (MAX1082) +2.7V to +3.6V (MAX1083) o Internal +2.5V Reference o 400kHz Sampling Rate (MAX1082) o Low Power: 2.5mA (400ksps) 1.3mA (REDP) 0.9mA (FASTPD) 2µA (FULLPD) o SPI/QSPI/MICROWIRE/TMS320-Compatible 4-Wire Serial Interface o Software-Configurable Unipolar or Bipolar Inputs o 16-Pin TSSOP Package Ordering Information PART TEMP RANGE PINPACKAGE INL (LSB) MAX1082ACUE+ 0°C to +70°C 16 TSSOP ±1/2 MAX1082BCUE+ 0°C to +70°C 16 TSSOP ±1 MAX1082AEUE+ -40°C to +85°C 16 TSSOP ±1/2 ±1 Ordering Information continued at end of data sheet. Portable Data Logging Pin Configuration Data Acquisition Medical Instruments Battery-Powered Instruments Pen Digitizers Process Control TOP VIEW VDD1 1 16 VDD2 CH0 2 15 SCLK CH1 3 14 CS CH2 4 CH3 5 Typical Operating Circuit appears at end of data sheet. + MAX1082 MAX1083 13 DIN 12 SSTRB COM 6 11 DOUT SHDN 7 10 GND REF 8 9 REFADJ QSPI is a trademark of Motorola, Inc. MICROWIRE is a registered trademark of National Semiconductor Corp. TSSOP For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com. 19-1690 Rev 2; 12/14 MAX1082/MAX1083 300ksps/400ksps, Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference ABSOLUTE MAXIMUM RATINGS VDD_ to GND............................................................ -0.3V to +6V VDD_ to VDD2 ....................................................... -0.3V to +0.3V CH0–CH3, COM to GND ........................... -0.3V to (VDD + 0.3V) REF, REFADJ to GND................................ -0.3V to (VDD + 0.3V) Digital Inputs to GND .............................................. -0.3V to +6V Digital Outputs to GND.............................. -0.3V to (VDD + 0.3V) Digital Output Sink Current .................................................25mA Continuous Power Dissipation (TA = +70°C) 16-Pin TSSOP (derate 6.7mW/°C above +70°C) ........ 533mW Operating Temperature Ranges MAX1082_C_E/MAX1083_CUE ......................... 0°C to +70°C MAX1082_E_E/MAX1083_EUE ....................... -40°C to +85°C Storage Temperature Range ............................ -60°C to +150°C Lead Temperature (soldering, 10s) ................................ +300°C Soldering Temperature (reflow)..........................................260°C 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—MAX1082 (VDD1 = VDD2 = +4.5V to +5.5V, COM = GND, fOSC = 6.4MHz, 50% duty cycle, 16 clocks/conversion cycle (400ksps), external +2.5V at REF, REFADJ = VDD1, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC ACCURACY (Note 1) 10 Resolution Relative Accuracy (Note 2) INL Differential Nonlinearity DNL bits MAX1082A ±0.5 MAX1083B ±1.0 No missing codes over temperature LSB ±1.0 LSB Offset Error ±3.0 LSB Gain Error (Note 3) ±3.0 LSB Gain-Error Temperature Coefficient ±1.6 ppm/°C Channel-to-Channel Offset-Error Matching ±0.2 LSB DYNAMIC SPECIFICATIONS (100kHz sine-wave input, 2.5Vp-p, 400ksps, 6.4MHz clock, bipolar input mode) Signal-to-Noise plus Distortion Ratio 60 dB -70 dB 70 dB fIN1 = 99kHz, fIN2 =102kHz 76 dB Channel-to-Channel Crosstalk (Note 4) 200kHz, VIN = 2.5Vp-p -78 dB Full-Power Bandwidth -3dB point 6 MHz Full-Linear Bandwidth SINAD > 58dB 350 kHz SINAD Total Harmonic Distortion THD Spurious-Free Dynamic Range SFDR Intermodulation Distortion IMD Up to the 5th harmonic CONVERSION RATE Conversion Time (Note 5) tCONV Track/Hold Acquisition Time tACQ 2.5 µs 400 ns Aperture Delay 10 ns Aperture Jitter 58dB 250 kHz SINAD Total Harmonic Distortion THD Spurious-Free Dynamic Range SFDR Intermodulation Distortion 4 IMD Up to the 5th harmonic Maxim Integrated MAX1082/MAX1083 300ksps/400ksps, Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference ELECTRICAL CHARACTERISTICS—MAX1083 (continued) (VDD1 = VDD2 = +2.7V to +3.6V, COM = GND, fOSC = 4.8MHz, 50% duty cycle, 16 clocks/conversion cycle (300ksps), external +2.5V at REF, REFADJ = VDD1, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS CONVERSION RATE Conversion Time (Note 5) tCONV Normal operating mode Track/Hold Acquisition Time tACQ Normal operating mode 3.3 µs 625 ns Aperture Delay 10 ns Aperture Jitter