AD5370 Series

40-Channel, 16-Bit, Serial Input, Voltage-Output DAC

Catalog

40-Channel, 16-Bit, Serial Input, Voltage-Output DAC

Part	Voltage - Supply, Digital [Min]	Voltage - Supply, Digital [Max]	INL/DNL (LSB)	Package / Case	Operating Temperature [Max]	Operating Temperature [Min]	Number of D/A Converters	Number of Bits	Architecture	Supplier Device Package	Reference Type	Settling Time	Voltage - Supply, Analog [Min]	Voltage - Supply, Analog [Max]	Data Interface	Mounting Type	Output Type
Analog Devices AD5370BSTZ-REEL	2.5 V	5.5 V	±1 (Max) ±4 (Max)	64-LQFP	85 °C	-40 °C	40	16	String DAC	64-LQFP (10x10)	External	30 µs	-4.5 V 9 V	16.5 V	DSP SPI	Surface Mount	Voltage - Buffered
Analog Devices AD5370BCPZ	2.5 V	5.5 V	±1 (Max) ±4 (Max)	64-VFQFN Exposed Pad CSP	85 °C	-40 °C	40	16	String DAC	64-LFCSP-VQ (9x9)	External	30 µs	-4.5 V 9 V	16.5 V	DSP SPI	Surface Mount	Voltage - Buffered
Analog Devices AD5370BSTZ	2.5 V	5.5 V	±1 (Max) ±4 (Max)	64-LQFP	85 °C	-40 °C	40	16	String DAC	64-LQFP (10x10)	External	30 µs	-4.5 V 9 V	16.5 V	DSP SPI	Surface Mount	Voltage - Buffered

Catalog

40-Channel, 16-Bit, Serial Input, Voltage-Output DAC

Key Features

• 40-channel DAC in a 64-lead LFCSP and a 64-lead LQFP

• Guaranteed monotonic to 16 bits

• Maximum output voltage span of 4 × VREF(20 V)

• Nominal output voltage span of −4 V to +8 V

• Multiple, independent output spans available

• System calibration function allowing user-programmable offset and gain

• Channel grouping and addressing features

• Thermal shutdown function

• DSP/microcontroller-compatible serial interface

• SPI serial interface

• 2.5 V to 5.5 V digital interface

• Digital reset (RESET)

• Clear function to user-defined SIGGNDx

• Simultaneous update of DAC outputs

Description

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.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 theLDACinput 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 theCLRpin.ApplicationsLevel setting in automatic test equipment (ATE)Variable optical attenuators (VOA)Optical switchesIndustrial control systemsInstrumentation* Protected by U.S. Patent No. 5,969,657; other patents pending.