AD7247 Series

Dual 12-Bit DACPORT with Parallel Load

Catalog

Dual 12-Bit DACPORT with Parallel Load

Part	Output Type	Number of Bits	INL/DNL (LSB)	Supplier Device Package	Package / Case [custom]	Package / Case	Package / Case [custom]	Voltage - Supply, Digital [Min]	Voltage - Supply, Digital [Max]	Operating Temperature [Max]	Operating Temperature [Min]	Reference Type	Settling Time	Mounting Type	Architecture	Data Interface	INL/DNL (LSB)	Voltage - Supply, Analog [Max]	Voltage - Supply, Analog [Min]	Voltage - Supply, Digital	Package / Case	Package / Case
Analog Devices AD7247ABRZ-REEL	Voltage - Buffered	12 bits	0.5 LSB 0.9 LSB	24-SOIC	7.5 mm	24-SOIC	0.295 in	10.8 V	16.5 V	85 °C	-40 °C	External Internal	8 µs	Surface Mount	R-2R	Parallel
Analog Devices AD7247ATQ	Voltage - Buffered	12 bits		24-CDIP		24-CDIP		10.8 V	16.5 V	125 °C	-55 °C	External Internal	10 µs	Through Hole	R-2R	Parallel	±0.9 (Max) ±1 (Max)
Analog Devices AD7247AQ	Voltage - Buffered	12 bits		24-CDIP		24-CDIP				125 °C	-55 °C	External Internal	10 µs	Through Hole	R-2R	Parallel	±0.9 (Max) ±1 (Max)	15 V	-15 V	15 V
Analog Devices AD7247KN	Voltage - Buffered	12 bits	0.5 LSB 0.9 LSB	24-PDIP		24-DIP				85 °C	-40 °C	External Internal	10 µs	Through Hole	R-2R	Parallel		15 V	-15 V	15 V	0.3 in	7.62 mm
Analog Devices AD7247ABRZ	Voltage - Buffered	12 bits	0.5 LSB 0.9 LSB	24-SOIC	7.5 mm	24-SOIC	0.295 in	10.8 V	16.5 V	85 °C	-40 °C	External Internal	8 µs	Surface Mount	R-2R	Parallel
Analog Devices AD7247BQ	Voltage - Buffered	12 bits	0.5 LSB 0.9 LSB	24-CDIP		24-CDIP				125 °C	-55 °C	External Internal	10 µs	Through Hole	R-2R	Parallel		15 V	-15 V	15 V
Analog Devices AD7247JN	Voltage - Buffered	12 bits		24-PDIP		24-DIP				85 °C	-40 °C	External Internal	10 µs	Through Hole	R-2R	Parallel	±0.9 (Max) ±1 (Max)	15 V	-15 V	15 V	0.3 in	7.62 mm
Analog Devices AD7247ABR-REEL	Voltage - Buffered	12 bits	0.5 LSB 0.9 LSB	24-SOIC	7.5 mm	24-SOIC	0.295 in	10.8 V	16.5 V	85 °C	-40 °C	External Internal	8 µs	Surface Mount	R-2R	Parallel
Analog Devices AD7247AAN	Voltage - Buffered	12 bits		24-PDIP		24-DIP		10.8 V	16.5 V	85 °C	-40 °C	External Internal	8 µs	Through Hole	R-2R	Parallel	±0.9 (Max) ±1 (Max)				0.3 in	7.62 mm
Analog Devices AD7247JNZ	Voltage - Buffered	12 bits		24-PDIP		24-DIP				85 °C	-40 °C	External Internal	10 µs	Through Hole	R-2R	Parallel	±0.9 (Max) ±1 (Max)	15 V	-15 V	15 V	0.3 in	7.62 mm

Catalog

Dual 12-Bit DACPORT with Parallel Load

Key Features

• Complete Dual 12-Bit DAC ComprisingTwo 12-Bit CMOS DACsOn-Chip Voltage ReferenceOutput AmplifiersReference Buffer Amplifiers

• Parallel Loading Structure: AD7247A

• Improved AD7237/AD7247: 12 V to 15 V OperationFaster Interface –30 ns typ Data Setup Time

• (8+4) Loading Structure: AD7237A

• Single or Dual Supply Operation

• Low Power—165 mW typ in Single Supply

Description

The AD7237A / AD7247A is an enhanced version of the industry standardAD7237/ AD7247. Improvements include operation from 12 V to 15 V supplies, faster interface times and better reference variations with VDD. Additional features include faster settling times.The AD7237A / AD7247A is a complete, dual, 12-bit, voltage output digital-to-analog converter with output amplifiers and Zener voltage reference on a monolithic CMOS chip. No external user trims are required to achieve full specified performance.Both parts are microprocessor compatible, with high speed data latches and interface logic. The AD7247A accepts 12-bit parallel data which is loaded into the respective DAC latch using theWRinput and a separate Chip Select input for each DAC. The AD7237A has a double buffered interface structure and an 8-bit wide data bus with data loaded to the respective input latch in two write operations. An asynchronousLDACsignal on the AD7237A updates the DAC latches and analog outputs.A REF OUT/REF IN function is provided which allows either the on-chip 5 V reference or an external reference to be used as a reference voltage for the part. For single supply operation, two output ranges of 0 V to +5 V and 0 V to +10 V are available, while these two ranges plus an additional ±5 V range are available with dual supplies. The output amplifiers are capable of developing +10 V across a 2 kΩ load to GND.The AD7237A / AD7247A is fabricated in Linear Compatible CMOS (LC2MOS), an advanced, mixed technology process that combines precision bipolar circuits with low power CMOS logic. Both parts are available in a 24-pin, 0.3" wide plastic and hermetic dual-in-line package (DIP) and are also packaged in a 24-lead small outline (SOIC) package.