DAC7718 Series

Octal, Low power,12-bit, +/-16.5V Output Serial Input Digital-to-Analog Converter

Catalog

Octal, Low power,12-bit, +/-16.5V Output Serial Input Digital-to-Analog Converter

Part	Voltage - Supply, Digital [Max]	Voltage - Supply, Digital [Min]	Package / Case	Reference Type	Architecture	INL/DNL (LSB)	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Supply, Analog [Min]	Voltage - Supply, Analog [Max]	Number of D/A Converters	Output Type	Supplier Device Package	Number of Bits	Data Interface	Settling Time	Mounting Type
Texas Instruments DAC7718SPAGR	5.5 V	2.7 V	64-TQFP	External	String DAC	±1 (Max)	-40 °C	105 ░C	-4.5 V	18 V	8	Voltage - Buffered	64-TQFP (10x10)	12 bits	SPI	15 µs	Surface Mount
Texas Instruments DAC7718SPAG	5.5 V	2.7 V	64-TQFP	External	String DAC	±1 (Max)	-40 °C	105 ░C	-4.5 V	18 V	8	Voltage - Buffered	64-TQFP (10x10)	12 bits	SPI	15 µs	Surface Mount
Texas Instruments DAC7718SRGZR	5.5 V	2.7 V	48-VFQFN Exposed Pad	External	String DAC	±1 (Max)	-40 °C	105 ░C	-4.5 V	18 V	8	Voltage - Buffered	48-VQFN (7x7)	12 bits	SPI	15 µs	Surface Mount

Catalog

Octal, Low power,12-bit, +/-16.5V Output Serial Input Digital-to-Analog Converter

Key Features

• Bipolar Output: ±2V to ±16.5VUnipolar Output: 0V to +33V12-Bit ResolutionLow Power: 14.4mW/Ch (Bipolar Supply)Relative Accuracy: 1 LSB MaxLow Zero/Full-Scale Error: ±1 LSB MaxFlexible System CalibrationLow Glitch: 4nV-sSettling Time: 15µsChannel Monitor OutputProgrammable Gain: x4/x6Programmable OffsetSPI: Up to 50MHz, 1.8V/3V/5V LogicSchmitt Trigger InputsDaisy-Chain with Sleep Mode EnhancementPackages: QFN-48 (7x7mm), TQFP-64 (10x10mm)APPLICATIONSAutomatic Test EquipmentPLC and Industrial Process ControlCommunicationsBipolar Output: ±2V to ±16.5VUnipolar Output: 0V to +33V12-Bit ResolutionLow Power: 14.4mW/Ch (Bipolar Supply)Relative Accuracy: 1 LSB MaxLow Zero/Full-Scale Error: ±1 LSB MaxFlexible System CalibrationLow Glitch: 4nV-sSettling Time: 15µsChannel Monitor OutputProgrammable Gain: x4/x6Programmable OffsetSPI: Up to 50MHz, 1.8V/3V/5V LogicSchmitt Trigger InputsDaisy-Chain with Sleep Mode EnhancementPackages: QFN-48 (7x7mm), TQFP-64 (10x10mm)APPLICATIONSAutomatic Test EquipmentPLC and Industrial Process ControlCommunications

Description

The DAC7718 is a low-power, octal, 12-bit digital-to-analog converter (DAC). With a 5V reference, the output can either be a bipolar ±15V voltage when operating from dual ±15.5V (or higher) power supplies, or a unipolar 0V to +30V voltage when operating from a +30.5V (or higher) power supply. With a 5.5V reference, the output can either be a bipolar ±16.5V voltage when operating from dual ±17V (or higher) power supplies, or a unipolar 0V to +33V voltage when operating from a +33.5V (or higher) power supply. This DAC provides low-power operation, good linearity, and low glitch over the specified temperature range of –40°C to +105°C. This device is trimmed in manufacturing and has very low zero-code and gain error. In addition, system level calibration can be performed over the entire signal chain. The output range can be offset by using the DAC offset register. The DAC7718 features a standard, high-speed serial peripheral interface (SPI) that operates at up to 50MHz and is 1.8V, 3V, and 5V logic compatible, to communicate with a DSP or microprocessor. The input data of the device are double-buffered. An asynchronous load input (LDAC) transfers data from the DAC data register to the DAC latch. The asynchronousCLRinput sets the output of all eight DACs to AGND. The VMONpin is a monitor output that connects to the individual analog outputs, the offset DAC, the reference buffer outputs, and two external inputs through a multiplexer (mux). The DAC7718 is pin-to-pin and function-compatible with the DAC8718 (16-bit) and the DAC8218 (14-bit). The DAC7718 is a low-power, octal, 12-bit digital-to-analog converter (DAC). With a 5V reference, the output can either be a bipolar ±15V voltage when operating from dual ±15.5V (or higher) power supplies, or a unipolar 0V to +30V voltage when operating from a +30.5V (or higher) power supply. With a 5.5V reference, the output can either be a bipolar ±16.5V voltage when operating from dual ±17V (or higher) power supplies, or a unipolar 0V to +33V voltage when operating from a +33.5V (or higher) power supply. This DAC provides low-power operation, good linearity, and low glitch over the specified temperature range of –40°C to +105°C. This device is trimmed in manufacturing and has very low zero-code and gain error. In addition, system level calibration can be performed over the entire signal chain. The output range can be offset by using the DAC offset register. The DAC7718 features a standard, high-speed serial peripheral interface (SPI) that operates at up to 50MHz and is 1.8V, 3V, and 5V logic compatible, to communicate with a DSP or microprocessor. The input data of the device are double-buffered. An asynchronous load input (LDAC) transfers data from the DAC data register to the DAC latch. The asynchronousCLRinput sets the output of all eight DACs to AGND. The VMONpin is a monitor output that connects to the individual analog outputs, the offset DAC, the reference buffer outputs, and two external inputs through a multiplexer (mux). The DAC7718 is pin-to-pin and function-compatible with the DAC8718 (16-bit) and the DAC8218 (14-bit).