AD5370 40-Channel, 16-Bit, Serial Input, Voltage-Output DACs

The AD5370* contains forty 16-bit DACs in a single 64-lead LFCSP and a 64-lead LQFP. The device provides buffered voltage outputs with a span that is 4× the reference voltage. The gain and offset of each DAC channel can be independently trimmed to remove errors. For even greater flexibility, the device is divided into five groups of eight DACs. Three offset DAC channels allow the output range of blocks to be adjusted. Group 0 can be adjusted by Offset DAC 0, Group 1 can be adjusted by Offset DAC 1, and Group 2 to Group 4 can be adjusted by Offset DAC 2. * Protected by U.S. Patent No. 5,969,657; other patents pending.

The AD5370 offers guaranteed operation over a wide supply range, with VSS from −16.5 V to −4.5 V and VDD from +9 V to +16.5 V. The output amplifier headroom requirement is 1.4 V operating with a load current of 1 mA.

The AD5370 has a high speed serial interface that is compatible with SPI, QSPI™, MICROWIRE™, and DSP interface standards and can handle clock speeds of up to 50 MHz.

The DAC registers are updated on receipt of new data. All the outputs can be updated simultaneously by taking the LDAC input low. Each channel has a programmable gain and an offset adjust register to allow removal of gain and offset errors.

Each DAC output is gained and buffered on chip with respect to an external SIGGNDx input. The DAC outputs can also be switched to SIGGNDx via the CLR pin.

Applications

Level setting in automatic test equipment (ATE)
Variable optical attenuators (VOA)
Optical switches
Industrial control systems
Instrumentation

Features and Benefits

40-channel DAC in 64 Lead LFCSP and LQFP
Guaranteed monotonic to 16 bits
Maximum output voltage span of
4 × V_REF(20 V)
Nominal output voltage range of -4 V to +8 V

Multiple, independent output span available
System calibration function allowing user-programmable offset and gain
See Data Sheet for Additional Information

Data Sheets

Document	note
AD5370: 40-Channel, 16-Bit, Serial Input, Voltage-Output DACs Data Sheet (Rev. 0)	PDF 287 kB

Application Notes

Document	note
AN-1036: Clear to Any Voltage Using the AD5370 (Rev. 0)	PDF 74 kB
AN-1215: 40 Channels of Programmable Industrial Level Output Span Using the AD5370 16-Bit Voltage Output DAC (Rev. 0)	PDF 79 kB

Product Highlight

Document	note
Extending the denseDAC™ Multichannel D/As	PDF 1100 kB

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
AD5370BCPZ Production	64 ld LFCSP (9x9mm, 7.10 exposed pad)	OTH 260	-40 to 85C	74.89	63.65	Y
AD5370BCPZ-REEL7 Production	64 ld LFCSP (9x9mm, 7.10 exposed pad)	REEL 750	-40 to 85C	74.89	63.65	Y
AD5370BSTZ-REEL Production	64 ld LQFP (10x10mm)	REEL 1500	-40 to 85C	0	63.65	Y