AD5445YCPZ

The AD5424/AD5433/AD5445 are CMOS, 8/10/12-bit, current output DACs. These devices operate from a 2.5 V to 5.5 V supply, making them suitable for battery-powered and many other applications. The data readback feature allows users to read the contents of the DAC register via the DB pins. At power-up, the internal registers and latches are filled with zeros, and the DAC output is at zero scale. These devices are fabricated using a CMOS submicron process, delivering excellent four-quadrant multiplication characteristics with a large signal multiplication bandwidth of up to 10 MHz. The full-scale output current is determined by the applied external reference input voltage (V_REF). When used with an external current-to-voltage precision amplifier, the integrated feedback resistor (R_FB) provides temperature tracking and full-scale voltage output. These devices offer improved multiplication bandwidth performance over the AD5424/AD5433/AD5445, but feature a latched interface and cannot be used in transparent mode. The AD5424 is available in a 20-lead LFCSP and a 16-lead TSSOP package, while the AD5433/AD5445 DACs are available in 20-lead LFCSP and TSSOP packages.

Applications

• Portable battery-powered applications
• Waveform generators
• Analog processing
• Instrumentation applications
• Programmable amplifiers and attenuators
• Digitally controlled calibration
• Programmable filters and oscillators
• Composite video
• Ultrasound
• Gain, offset, and voltage adjustment

Key features

• 2.5 V to 5.5 V supply voltage
• Fast parallel interface write cycle: 17 ns
• Update rate: 20.4 MSPS
• INL: ±η LSB (12-bit DAC)
• Multiplying bandwidth: 10 MHz
• ±10 μ reference voltage input
• Extended temperature range: -40°C to +125°C
• 20-lead TSSOP and chip-scale (4 mm × 4 mm) packages
• 8/10/12-bit current output DAC
• Upgrade to AD7524/AD7533/AD7545
• Pin-compatible 8/10/12-bit chip-scale DAC
• Guaranteed monotonicity
• Four-quadrant multiplication
• Power-on reset with power-down detection
• Readback function
• Power consumption: 0.4 μ (typical)