AD7845 Series

Complete 12-Bit CMOS Multiplying DAC

Catalog

Complete 12-Bit CMOS Multiplying DAC

Part	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Reference Type	Output Type	Settling Time	Number of Bits	Package / Case	Mounting Type	Architecture	Voltage - Supply, Analog [Max]	Voltage - Supply, Analog [Min]	Data Interface	INL/DNL (LSB)	Package / Case [custom]	Package / Case [custom]	INL/DNL (LSB)	Package / Case	Package / Case
Analog Devices AD7845KP	70 °C	0 °C	28-PLCC (11.51x11.51)	External	Voltage - Buffered	5 µs	12 bits	28-LCC (J-Lead)	Surface Mount	R-2R	15.75 V	-14.25 V	Parallel	0.75 LSB 1 LSB
Analog Devices AD7845TQ/883B
Analog Devices AD7845BR			24-SOIC					24-SOIC	Surface Mount						7.5 mm	0.295 in
Analog Devices AD7845AR			24-SOIC					24-SOIC	Surface Mount						7.5 mm	0.295 in
Analog Devices AD7845SE/883B
Analog Devices AD7845JN	70 °C	0 °C	24-PDIP	External	Voltage - Buffered	5 µs	12 bits	24-DIP	Through Hole	R-2R	15.75 V	-14.25 V	Parallel				±1 (Max)	0.3 in	7.62 mm
Analog Devices AD7845JP-REEL			28-PLCC (11.51x11.51)					28-LCC (J-Lead)	Surface Mount
Analog Devices AD7845JPZ-REEL	70 °C	0 °C	28-PLCC (11.51x11.51)	External	Voltage - Buffered	5 µs	12 bits	28-LCC (J-Lead)	Surface Mount	R-2R	15.75 V	-14.25 V	Parallel				±1 (Max)
Analog Devices AD7845SQ	125 °C	-55 °C	24-CDIP	External	Voltage - Buffered	5 µs	12 bits	24-CDIP	Through Hole	R-2R	15.75 V	-14.25 V	Parallel				±1 (Max)
Analog Devices AD7845KR	70 °C	0 °C	24-SOIC	External	Voltage - Buffered	5 µs	12 bits	24-SOIC	Surface Mount	R-2R	15.75 V	-14.25 V	Parallel	0.75 LSB 1 LSB	7.5 mm	0.295 in

Catalog

Complete 12-Bit CMOS Multiplying DAC

Key Features

• 12-Bit CMOS MDAC with Output Amplifier

• 4-Quadrant Multiplication

• Low Power LC2MOS

• Guaranteed Monotonic (Tminto Tmax)

• Space-Saving 0.3" DIPS and 24- or 28- Terminal Surface Mount Packages

• Application Resistors On Chip for Gain Ranging, etc.

Description

The AD7845 is the industry's first 4-quadrant multiplying D/A converter with an on-chip amplifier. It is fabricated on the LC2MOS process, which allows precision linear components and digital circuitry to be implemented on the same chip.The 12 data inputs drive latches which are controlled by standard CS andWRsignals, making microprocessor interfacing simple. For stand-alone operation, theCSandWRinputs can be tied to ground, making all latches transparent. All digital inputs are TTL and 5 V CMOS compatible.The output amplifier can supply ±10 V into a 2k(ohm) load. It is internally compensated, and its input offset voltage is low due to laser trimming at wafer level. For normal operation, RFBis tied to VOUT, but the user may alternatively choose RA, RBor RCto scale the output voltage range.