MAX1034/MAX1035 19-3574 Rev 2 3/12 8-/4-Channel, V Multirange Inputs, REF Serial 14-Bit ADCs General Description Features The MAX1034/MAX1035 multirange, low-power, 14-bit, Software-Programmable Input Range for Each successive-approximation, analog-to-digital converters Channel (ADCs) operate from a single +5V supply and achieve Single-Ended Input Ranges throughput rates up to 115ksps. A separate digital sup- 0V to +V /2, -V /2 to 0V, 0V to +V , REF REF REF ply allows digital interfacing with 2.7V to 5.25V systems -V to 0V, V /4, V /2, and V REF REF REF REF using the SPI-/QSPI-/MICROWIRE -compatible serial interface. Partial power-down mode reduces the supply Differential Input Ranges current to 1.3mA (typ). Full power-down mode reduces V /2, V , and 2 x V REF REF REF the power-supply current to 1A (typ). Eight Single-Ended or Four Differential Analog The MAX1034 provides eight (single-ended) or four (true Inputs (MAX1034) differential) analog input channels. The MAX1035 pro- Four Single-Ended or Two Differential Analog vides four (single-ended) or two (true differential) analog Inputs (MAX1035) input channels. Each analog input channel is indepen- dently software programmable for seven single-ended 6V Overvoltage Tolerant Inputs input ranges (0V to +V /2, -V /2 to 0V, 0V to +V , REF REF REF Internal or External Reference -V to 0V, V /4, V /2, and V ), and three REF REF REF REF differential input ranges (V /2, V , 2 x V ). REF REF REF 115ksps Maximum Sample Rate An on-chip +4.096V reference offers a small convenient Single +5V Power Supply ADC solution. The MAX1034/MAX1035 also accept an 20-/24-Pin TSSOP Package external reference voltage between 3.800V and 4.136V. The MAX1034 is available in a 24-pin TSSOP package Ordering Information and the MAX1035 is available in a 20-pin TSSOP pack- age. Each device is specified for operation from -40C PART PIN-PACKAGE CHANNELS to +85C. MAX1034EUG+ 24 TSSOP 8 Applications MAX1035EUP+ 20 TSSOP 4 Note: All devices are specified over the -40C to +85C opera- Industrial Control Systems ting temperature range. Data-Acquisition Systems +Denotes a lead(Pb)-free/RoHS-compliant package. Avionics Pin Configurations Robotics TOP VIEW + AVDD1 1 24 AGND1 CH0 2 23 AGND2 CH1 3 22 AVDD2 CH2 4 21 AGND3 MAX1034 CH3 5 20 REF CH4 6 19 REFCAP CH5 7 18 DVDD CH6 8 17 DVDDO CH7 9 16 DGND CS 10 15 DGNDO DIN 11 14 DOUT SSTRB 12 13 SCLK QSPI is a trademark of Motorola, Inc. MICROWIRE is a registered trademark of National TSSOP Semiconductor Corp. Pin Configurations continued at end of data sheet. 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.8-/4-Channel, V Multirange Inputs, REF Serial 14-Bit ADCs ABSOLUTE MAXIMUM RATINGS AVDD1 to AGND1 ....................................................-0.3V to +6V CH0CH7 to AGND1...................................................-6V to +6V AVDD2 to AGND2 ....................................................-0.3V to +6V REF, REFCAP to AGND1 ....................-0.3V to (V + 0.3V) AVDD1 DVDD to DGND........................................................-0.3V to +6V Continuous Current (any pin) ...........................................50mA DVDDO to DGNDO ..................................................-0.3V to +6V Continuous Power Dissipation (Multilayer board, T = +70C) A DVDD to DVDDO......................................................-0.3V to +6V 20-Pin TSSOP (derate 13.6mW/C above +70C).........1084mW DVDD, DVDDO to AVDD1........................................-0.3V to +6V 24-Pin TSSOP (derate 13.9mW/C above +70C)......1111.1mW AVDD1, DVDD, DVDDO to AVDD2 ..........................-0.3V to +6V Operating Temperature Range ...........................-40C to +85C DGND, DGNDO, AGND3, AGND2 to AGND1 ......-0.3V to +0.3V Junction Temperature .....................................................+150C CS, SCLK, DIN, DOUT, SSTRB to Storage Temperature Range .............................-65C to +150C DGNDO..........................................-0.3V to (V + 0.3V) Lead Temperature (soldering, 10s) .................................+300C DVDDO Soldering Temperature (reflow) .......................................+260C 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 = V = V = 5V, V = V = V = V = V = 0V, f = 3.5MHz (50% duty cycle), AVDD1 AVDD2 DVDD DVDDO AGND1 DGND DGNDO AGND2 AGND3 CLK external clock mode, V = 4.096V (external reference operation), REFCAP = AVDD1, maximum single-ended bipolar input range (V ), REF REF C = 50pF, C = 50pF, T = -40C to +85C, unless otherwise noted. Typical values are at T = +25C.) DOUT SSTRB A A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC ACCURACY (Notes 1, 2) Resolution 14 Bits Integral Nonlinearity INL 0.25 1 LSB Differential Nonlinearity DNL No missing codes 1 LSB 0.5 Transition Noise External or internal reference LSB RMS 2 Unipolar 0 7.5 Single-ended inputs Bipolar -1.0 7.5 Offset Error mV Differential inputs Bipolar -2 10 (Note 3) Channel-to-Channel Gain Unipolar or bipolar 0.025 %FSR Matching Channel-to-Channel Offset Error Unipolar or bipolar 1.0 mV Matching Unipolar 3 Bipolar 1 Offset Temperature Coefficient V/C Fully differential 2 Unipolar 0.5 Gain Error Bipolar 0.8 %FSR Fully differential 1 Unipolar 1.5 Gain Temperature Coefficient ppm/C Bipolar 1.0 2 MAX1034/MAX1035