MAX5548ETE+

MAXIM INTEGRATED PRODUCTS  MAX5548ETE+  数模转换器, 可编程, 30mA 高输出电流, 8 bit, 串行, 2.7V 至 5.25V, TQFN, 16 引脚

The is a dual, 8bit, programmable high output current digital to analogue converter DAC in 16 pin TQFN package. The sources up to 30mA per DAC by making it ideal for PIN diode biasing applications. Outputs can also be paralleled for high current applications up to 60mA typically. Operating from a single 2.7V to 5.25V supply, the MAX5548 typically consumes 1.5mA per DAC in normal operation and less than 1µA in shutdown mode. The device also has low output leakage current in shutdown mode ±1µA maximum that is essential to ensure that external PIN diodes are off. It includes integrated 1.25V bandgap reference and control amplifier to ensure high accuracy and low noise performance. A separate reference input REFIN allows for use of an external reference source such as MAX6126 for improved gain accuracy. The maximum programmable output current value is set using software and an adjustment resistor. It is used in PIN diode biasing, RF attenuator control and VCO tuning.

.

Pin selectable I2C or SPI compatible interface

.

Operating temperature range from -40°C to 85°C

.

Offset of -4LSB, zero scale error of 1µA and full scale error of -4LSB

.

Monotonic over extended temperature range

.

Dual outputs for balanced systems

.

Output stable with RF filters

.

Internal or external reference capability

.

Digital output DOUT available for daisy chaining in SPI mode

.

Programmable output current range set by software and adjustment resistor

.

Integral nonlinearity of ±1LSB and differential nonlinearity of ±1LSB monotonic