Specification	AD7249BRZ

Architecture	R-2R
Data Interface	SPI
Differential Output	No
DNL (Max) (LSB)	0.9 LSB
INL (Max) (LSB)	0.5 LSB
Mounting Type	Surface Mount
Number of Bits	12 bits
Number of D/A Converters	2 count
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Output Type	Voltage - Buffered
Package Length	0.295 in
Package Name	16-SOIC
Package Width	7.5 mm
Reference Type	External, Internal
Settling Time	10 µs
Voltage - Supply, Analog (Maximum)	15.75 V
Voltage - Supply, Analog (Nominal Negative)	-11.4 V
Voltage - Supply, Analog (Nominal Positive)	11.4 V

AD7249 Series

LC2MOS Dual 12-Bit Serial DACPORT

Part	Package Length	Package Name	Package Width	Number of Bits	Architecture	Operating Temperature (Min)	Operating Temperature (Max)	Mounting Type	Number of D/A Converters	DNL (Max) (LSB)	INL (Max) (LSB)	Data Interface	Reference Type	Differential Output	Output Type	Settling Time	Voltage - Supply, Analog (Maximum)	Voltage - Supply, Analog (Nominal Positive)	Voltage - Supply, Analog (Nominal Negative)
Analog Devices Inc./Maxim Integrated AD7249BN	0.3 in	16-DIP 16-PDIP	7.62 mm	12 bits	R-2R	-40 °C	85 °C	Through Hole	2 count	0.9 LSB	0.5 LSB	SPI	External Internal	No	Voltage - Buffered	10 µs	15.75 V	11.4 V	-11.4 V
Analog Devices Inc./Maxim Integrated AD7249BRZ-REEL	0.295 in	16-SOIC	7.5 mm	12 bits	R-2R	-40 °C	85 °C	Surface Mount	2 count	0.9 LSB	0.5 LSB	SPI	External Internal	No	Voltage - Buffered	10 µs	15.75 V	11.4 V	-11.4 V
Analog Devices Inc./Maxim Integrated AD7249ARZ	0.295 in	16-SOIC	7.5 mm	12 bits	R-2R	-40 °C	85 °C	Surface Mount	2 count	0.9 LSB	1 LSB	SPI	External Internal	No	Voltage - Buffered	10 µs	16.5 V	10.8 V	-10.8 V
Analog Devices Inc./Maxim Integrated AD7249AR-REEL	0.295 in	16-SOIC	7.5 mm	12 bits	R-2R	-40 °C	85 °C	Surface Mount	2 count	0.9 LSB	1 LSB	SPI	External Internal	No	Voltage - Buffered	10 µs	16.5 V	10.8 V	-10.8 V
Analog Devices Inc./Maxim Integrated AD7249BR	0.295 in	16-SOIC	7.5 mm	12 bits	R-2R	-40 °C	85 °C	Surface Mount	2 count	0.9 LSB	0.5 LSB	SPI	External Internal	No	Voltage - Buffered	10 µs	15.75 V	11.4 V	-11.4 V
Analog Devices Inc./Maxim Integrated AD7249BNZ	0.3 in	16-DIP 16-PDIP	7.62 mm	12 bits	R-2R	-40 °C	85 °C	Through Hole	2 count	0.9 LSB	0.5 LSB	SPI	External Internal	No	Voltage - Buffered	10 µs	15.75 V	11.4 V	-11.4 V
Analog Devices Inc./Maxim Integrated AD7249SQ	0.3 in	16-CDIP 16-CERDIP	7.62 mm	12 bits	R-2R	-55 °C	125 °C	Through Hole	2 count	0.9 LSB	1 LSB	SPI	External Internal	No	Voltage - Buffered	10 µs	16.5 V	10.8 V	-10.8 V
Analog Devices Inc./Maxim Integrated AD7249BRZ	0.295 in	16-SOIC	7.5 mm	12 bits	R-2R	-40 °C	85 °C	Surface Mount	2 count	0.9 LSB	0.5 LSB	SPI	External Internal	No	Voltage - Buffered	10 µs	15.75 V	11.4 V	-11.4 V
Analog Devices Inc./Maxim Integrated AD7249ARZ-REEL	0.295 in	16-SOIC	7.5 mm	12 bits	R-2R	-40 °C	85 °C	Surface Mount	2 count	0.9 LSB	1 LSB	SPI	External Internal	No	Voltage - Buffered	10 µs	16.5 V	10.8 V	-10.8 V
Analog Devices Inc./Maxim Integrated AD7249ANZ	0.3 in	16-DIP 16-PDIP	7.62 mm	12 bits	R-2R	-40 °C	85 °C	Through Hole	2 count	0.9 LSB	1 LSB	SPI	External Internal	No	Voltage - Buffered	10 µs	16.5 V	10.8 V	-10.8 V

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$	Updated

Digikey	Tube	1	$ 64.28	<1d
		21	$ 50.86
		42	$ 49.10
		105	$ 47.25

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Description

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AD7249 Series

The AD7249 DACPORT®contains a pair of 12-bit, voltage-output, digital-to-analog converters with output amplifiers and Zener voltage reference on a monolithic CMOS chip. No external trims are required to achieve full specified performance.The output amplifiers are capable of developing +10 V across a 2 kΩload. The output voltage ranges with single supply operation are 0 V to +5 V or 0 V to +10 V, while an additional bipolar ±5V output range is available with dual supplies. The ranges are selected using the internal gain resistor.Interfacing to the AD7249 is serial, minimizing pin count and allowing a small package size. Standard control signals allow interfacing to most DSP processors and microcontrollers. The data stream consists of 16 bits, DB15 to DB13 are don't care bits, the 13th bit (DB12) is used as the channel select bit and the remaining 12 bits (DB11 to DB0) contain the data to update the DAC. The 16-bit data word is clocked into the input register on each falling SCLK edge.The data format is natural binary in both unipolar ranges, while either offset binary or twos complement format may be selected in the bipolar range. ACLRfunction is provided which sets the output to 0 V in both unipolar ranges and in the twos complement bipolar range, while with offset binary data format, the output is set to -REFIN. This function is useful as a power-on reset as it allows the outputs to be set to a known voltage level.The AD7249 features a serial interface which allows easy connection to both microcomputers and 16-bit digital signal processors with serial ports. The serial data may be applied at rates up to 2 MHz allowing a DAC update rate of 125 kHz.The AD7249 is fabricated on linear compatible CMOS (LC2MOS), an advanced, mixed technology process. It is packaged in 16-pin DIP and 16-pin SOIC packages.DACPORT is a registered trademark of Analog Devices, Inc.

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AD7249BRZ

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AD7249 Series

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AD7249 Series

Documents

AD7249BRZ | Datasheet

Package Drawing - 16-Lead SOIC Wide

AN-225: 12-Bit Voltage-Output DACs for Single-Supply 5V and 12V Systems

AN-214: Ground Rules for High Speed Circuits

AN-348: Avoiding Passive-Component Pitfalls