AD5447 Dual 12-Bit, High Bandwidth Multiplying DACs with Parallel Interface

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 trimming

The AD5428/AD5440/AD5447 are Dual CMOS 8-, 10- and 12-bit, dual-channel, current output digital-to-analog converters (DACs), respectively. These devices operate from a 2.5 V to 5.5 V power supply, making them suited to battery-powered and other applications.

As a result of being manufacture on a CMOS submicron process, they offer excellent 4-quadrant multiplication characteristics, with large signal multiplying bandwidths of up to 10 MHz.

These DACs utilize data readback, allowing the user to read the contents of the DAC register via the DB pins. On power-up, the internal register and latches are filled with zeros and the DAC outputs are at zero scale.

The applied external reference input voltage (VREF) determines the full scale output current. An integrated feedback resistor (RFB) provides temperature tracking and full scale voltage output when combined with an external I-to-V Precision Amplifier.

The AD5428 is available in small 20 lead TSSOP package, while the AD5440/AD5447 DACs are available in small 24-lead TSSOP packages.

Applications

Features and Benefits

10 MHz multiplying bandwidth
INL of ±0.25 LSB @ 8 bits
24-lead TSSOP package
2.5 V to 5.5 V supply operation
±10 V reference input
21.3 MSPS update rate
Extended temperature range: −40°C to +125°C
4-quadrant multiplication

Power-on reset
0.5 μA typical current consumption
Guaranteed monotonic
Readback Function
AD7528 Upgrade (AD5428)
AD7547 Upgrade (AD5447)

Digital to Analog Converters

D/A Converters

Data Sheets

Document	note
AD5428/AD5440/AD5447: Dual 8-/10-/12-Bit, High Bandwidth, Multiplying DACs with Parallel Interface Data Sheet (Rev. D)	PDF 657.87 K

Application Notes

Document	note
AN-912: Driving a Center-Tapped Transformer with a Balanced Current-Output DAC (Rev. 0)	PDF 246 kB
AN-320A: CMOS Multiplying DACs and Op Amps Combine to Build Programmable Gain Amplifier, Part 1	PDF 1295 kB
AN-137: A Digitally Programmable Gain and Attenuation Amplifier Design	PDF 52 kB

User Guides

Document	note
UG-275: Evaluation Board for the AD5428/AD5440/AD5447EB 8-Bit/10-Bit/12-Bit, Parallel Input, Dual-Channel, Current Output DAC	PDF 315 kB

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
AD5447YRU Last Time Buy	24 ld TSSOP	OTH 62	-40 to 125C	0	0	N
AD5447YRUZ Production	24 ld TSSOP	OTH 62	-40 to 125C	5.67	4.59	Y
AD5447YRUZ-REEL Production	24 ld TSSOP	REEL 2500	-40 to 125C	0	4.59	Y
AD5447YRUZ-REEL7 Production	24 ld TSSOP	REEL 1000	-40 to 125C	0	4.59	Y