AD5415 Dual 12-Bit, High Bandwidth, Multiplying DAC with 4 Quadrant Resistors and Serial Interface

The AD5415 is a CMOS1, 12-bit, dual channel, current output digital-to-analog converter. This device operates from a 2.5 V to 5.5 V power supply, making it suited to battery-powered applications and other applications.

As a result of being manufactured on a CMOS submicron process, this part offers excellent 4-quadrant multiplication characteristics, with large-signal multiplying bandwidths of 10 MHz.

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 current to voltage precision amplifier. In addition, this device contains the 4-quadrant resistors necessary for bipolar operation and other configuration modes.

This DAC uses a double buffered, 3-wire serial interface that is compatible with SPI®, QSPI™, MICROWIRE™, and most DSP interface standards. In addition, a serial data out pin (SDO) allows daisy-chaining when multiple packages are used. Data readback allows the user to read the contents of the DAC register via the SDO pin. On power-up, the internal shift register and latches are filled with 0s, and the DAC outputs are at zero scale.

The AD5415 DAC is available in a 24-lead TSSOP package. The EVAL-AD5415/AD5449SDZ evaluation board is available for evaluating DAC performance. For more information, see the UG-296 evaluation board user guide.

1U.S. Patent Number 5,689,257.

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 trimming

Features and Benefits

10 MHz multiplying bandwidth
On-chip 4-quadrant resistors allow flexible output ranges
INL of ±1 LSB
24-lead TSSOP package
2.5 V to 5.5 V supply operation
±10 V reference input
50 MHz serial interface
2.47 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
Daisy-chain mode
Readback function

Digital to Analog Converters

D/A Converters

Data Sheets

Document	note
AD5415: Dual 12-Bit, High Bandwidth, Multiplying DAC with 4-Quadrant Resistors and Serial Interface Datasheet (Rev. F)	PDF 727 kB

Application Notes

Document	note
AN-912: Driving a Center-Tapped Transformer with a Balanced Current-Output DAC (Rev. 0)	PDF 246 kB
AN-320B: CMOS Multiplying DACs and Op Amps Combine to Build Programmable Gain Amplifiers, Part 2	PDF 989 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-296: Evaluating the AD5415 Serial Input, Dual-Channel Current Output DAC	PDF 2509 kB

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
AD5415YRUZ Production	24 ld TSSOP	OTH 62	-40 to 125C	5.69	4.61	Y
AD5415YRUZ-REEL Production	24 ld TSSOP	REEL 2500	-40 to 125C	0	4.61	Y
AD5415YRUZ-REEL7 Production	24 ld TSSOP	REEL 1000	-40 to 125C	0	4.61	Y