MAX1048BETX

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 input-channel 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 fast response closed-loop systems.

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)

Applications

Closed-Loop Controls for Optical Components and Base Stations
System Supervision and Control
Data-Acquisition Systems