AD5331BRUZ

The AD5330/AD5331/AD5340/AD5341 are single 8-/10-/12-bit DACs. They operate from a 2.5 V to 5.5 V supply consuming just 115 μA at 3V and feature a power-down mode that further reduces the current to 80 nA. The devices incorporate an on-chip output buffer that can drive the output to both supply rails, but the AD5330, AD5340, and AD5341 allow a choice of buffered or unbuffered reference input. The AD5330/AD5331/AD5340/AD5341 have a parallel interface. CS selects the device and data is loaded into the input registers on the rising edge of WR. The GAIN pin allows the output range to be set at 0V to VREF or 0V to 2×VREF. Input data to the DACs is double-buffered, allowing simultaneous update of multiple DACs in a system using the LDAC pin. An asynchronous CLR input is also provided, which resets the contents of the input register and the DAC register to all zeros. These devices also incorporate a power-on reset circuit that ensures that the DAC output powers on to 0V and remains there until valid data is written to the device. The AD5330/AD5331/AD5340/AD5341 are available in thin shrink small outline packages (TSSOP).

Applications

• Portable battery-powered instruments
• Digital gain and offset adjustment
• Programmable voltage and current sources
• Programmable attenuators
• Industrial process control

Key features

• AD5330: single 8-bit DAC in 20-lead TSSOP
• AD5331: single 10-bit DAC in 20-lead TSSOP
• AD5340: single 12-bit DAC in 24-lead TSSOP
• AD5341: single 12-bit DAC in 20-lead TSSOP
• Low power operation: 115 μA @ 3 V, 140 μA @ 5 V
• Power-down to 80 nA @ 3 V, 200 nA @ 5 V via p0 Pin
• 2.5 V to 5.5 V power supply
• Double-buffered input logic
• Guaranteed monotonic by design over all codes
• Buffered/unbuffered reference input options
• Output range: 0 V to VREF or 0 V to 2×VREF
• Power-on reset to 0 V
• Simultaneous update of DAC outputs via LDAC pin
• Asynchronous CLR facility
• Low power parallel data interface
• On-chip rail-to-rail output buffer amplifiers
• Temperature range: -40°C to +105°C