AD5446 14-Bit High Bandwidth Multiplying DAC with Serial Interface including a Serial Data Output line

The AD5444/AD54461 are CMOS 12-bit and 14-bit, current output, digital-to-analog converters (DACs). Operating from a single 2.5 V to 5.5 V power supply, these devices are suited for battery-powered and other applications.

As a result of the CMOS submicron manufacturing process, these parts offer excellent 4-quadrant multiplication characteristics of up to 12 MHz.

These DACs use a double-buffered, 3-wire serial interface that is compatible with SPI®, QSPI™, MICROWIRE™, and most DSP interface standards. On power-up, the internal shift register and latches are filled with 0s, and the DAC output is at zero scale.

The applied external reference input voltage (VREF) determines the full-scale output current. These parts can handle ±10 V inputs on the reference, despite operating from a single-supply power supply of 2.5 V to 5.5 V. An integrated feedback resistor (RFB) provides temperature tracking and full-scale voltage output when combined with an external current-to-voltage precision amplifier. The AD5444/AD5446 DACs are available in small 10-lead MSOP packages, which are pin-compatible with the AD5425/AD5426/AD5432/AD5443 family of DACs.

The EV-AD5443/46/53SDZ board is available for evaluating DAC performance. For more information, see the UG-327 evaluation board user guide.

Applications

Features and Benefits

12 MHz multiplying bandwidth
INL of ±0.5 LSB at 12 bits
Pin-compatible 12-/14-bit current output DAC
2.5 V to 5.5 V supply operation
10-lead MSOP package
±10 V reference input
50 MHz serial interface
2.7 MSPS update rate

Extended temperature range: −40°C to +125°C
4-quadrant multiplication
Power-on reset with brownout detection
0.4 µA typical current consumption
Guaranteed monotonic

Digital to Analog Converters

D/A Converters

Data Sheets

Document	note
AD5444/AD5446: 12-/14-Bit High Bandwidth Multiplying DACs with Serial Interface Data Sheet (Rev. F)	PDF 638.01 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-327: Evaluating the AD5443, AD5446, and AD5453 Current Output/Serial Input DACs (Rev. B)	PDF 416.45 K

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
AD5446YRM Production	10 ld MSOP	OTH 50	-40 to 125C	0	0	N
AD5446YRMZ Production	10 ld MSOP	OTH 50	-40 to 125C	5.61	4.59	Y
AD5446YRMZ-RL7 Production	10 ld MSOP	REEL 1000	-40 to 125C	0	4.59	Y