LTC2752 Dual-Channel, 16-Bit Digital-to-Analog Converter

describe

The LTC®2752 is a dual-channel, 16-bit multiplying serial input, current output digital-to-analog converter. The device operates from a single 3V to 5V supply and is guaranteed monotonic over the entire temperature range. Without any adjustment, the LTC2752A provides full 16-bit performance (±1LSB INL and DNL maximum) over the entire temperature range. This SoftSpanTM DAC offers 6 output ranges (up to ±10V) that can be set via a 3-wire SPI serial interface, or can be pin-strapped to operate in one output range.

Any on-chip register, including the DAC output range settings, can be read in just one instruction cycle for verification; and if you change the contents of a register, the modified register is automatically read back in the next instruction cycle.

The device also provides voltage-controlled offset and gain adjustments; furthermore, a power-on reset circuit and the CLR pin both reset the DAC output to 0V, regardless of the output range.

Features

Six output ranges are available through programming or pin strapping:

0V to 5V, 0V to 10V, -2.5V to 7.5V, ±2.5V, ±5V, ±10V

Maximum 16-Bit INL Error: ±1LSB Over Temperature

Guaranteed monotonic over the entire temperature range

Interference pulse: 0.6nV•s (3V), 2.2nV•s (5V)

Serial readback of all on-chip registers

1μA Maximum Supply Current

2.7V to 5.5V Single Supply Operation

16-bit settling time: 2μs

Voltage-controlled offset and gain trimming

Clear to 0V and Power-On Reset to 0V (this is independent of the output range)

48-pin 7mm x 7mm LQFP package

Typical Application

Encapsulation

application

High-resolution offset and gain adjustment

Process Control and Industrial Automation

Automatic test equipment

Data Acquisition System