MAX1072

Features:

` 1.8Msps Sampling Rate
` Only 45mW (typ) Power Dissipation
` Only 1A (max) Shutdown Current
` High-Speed, SPI-Compatible, 3-Wire Serial Interface
` 61dB S/(N + D) at 525kHz Input Frequency
` Internal True-Differential Track/Hold (T/H)
` External Reference
` No Pipeline Delays
` Small 12-Pin TQFN Package


Application

Data Acquisition
Bill Validation
Motor Control
Communications
Portable Instruments


Pinout




Specifications

VDD to GND.........................................................-0.3V to +6V
VL to GND .............-0.3V to the lower of (VDD + 0.3V) or +6V
Digital Inputs
to GND ..................-0.3V to the lower of (VDD + 0.3V) or +6V
Digital Output
to GND......................-0.3V to the lower of (VL + 0.3V) or +6V
Analog Inputs and
REF to GND............-0.3V to the lower of (VDD + 0.3V) or +6V
RGND to GND ...................................................-0.3V to +0.3V
Maximum Current into Any Pin........................................50mA
Continuous Power Dissipation (TA = +70°C)
12-Pin TQFN (derate 16.9mW/°C above +70°C) .....1349mW
Operating Temperature Ranges
MAX107_ CTC ..................................................0°C to +70°C
MAX107_ ETC................................................-40°C to +85°C
Junction Temperature.................................................+150°C
Storage Temperature Range ......................-60°C to +150°C
Lead Temperature (soldering, 10s) ............................+300°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.


Description

The MAX1072/MAX1075 low-power, high-speed, serialoutput, 10-bit, analog-to-digital converters (ADCs) operate at up to 1.8Msps. These devices feature true-differential inputs, offering better noise immunity, distortion improvements, and a wider dynamic range over singleended inputs. A standard SPI™/QSPI™/MICROWIRE™ interface provides the clock necessary for conversion. These devices easily interface with standard digital signal processor (DSP) synchronous serial interfaces. The MAX1072/MAX1075 operate from a single +4.75V to +5.25V supply voltage and require an external reference.

The MAX1072 has a unipolar analog input, while the MAX1075 has a bipolar analog input. These devices feature a partial power-down mode and a full power-down mode for use between conversions, which lower the supply current to 1mA (typ) and 1A (max), respectively. Also featured is a separate power-supply input (VL), which allows direct interfacing to +1.8V to VDD digital logic. The fast conversion speed, low-power dissipation, excellent AC performance, and DC accuracy (±0.5 LSB INL) make the MAX1072/MAX1075 ideal for industrial process control, motor control, and base-station applications.

The MAX1072/MAX1075 come in a 12-pin TQFN package, and are available in the commercial (0°C to +70°C) and extended (-40°C to +85°C) temperature ranges.