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Series Information for AD7247ABRZ - Analog Devices


  • feature
    Complete Dual 12-Bit DAC Comprising Two 12-Bit CMOS DACs On-Chip Voltage Reference Output Amplifiers Reference Buffer Amplifiers Improved AD7237/AD7247: 12 V to 15 V Operation Faster Interface u201330 ns typ Data Setup Time Parallel Loading Structure: AD7247A (8+4) Loading Structure: AD7237A Single or Dual Supply Operation Low Poweru2014165 mW typ in Single Supply



The AD7237A/AD7247A is an enhanced version of the industry standard AD7237/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 exter- nal 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 paral- lel data which is loaded into the respective DAC latch using the WR input 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 asynchronous LDAC signal 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 avail- able with dual supplies. The output amplifiers are capable of de- veloping +10 V across a 2 kΩ load to GND. The AD7237A/AD7247A is fabricated in Linear Compatible CMOS (LC2 MOS), 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.


Resolution (Bits):
Sampling Rate:
Input Channel Type:
Supply Voltage Range:
± 14.25V to ± 15.75V
ADC / DAC Case Style:
No. of Pins:
Data Interface:
Operating Temperature Min:
Operating Temperature Max:
Product Range:
AD7247 Series
Automotive Qualification Standard:
RoHS Phthalates Compliant:
MSL 3 - 168 hours
No SVHC (07-Jul-2017)
Supply Current:

Alternate Descriptions

Newark Electronics
Digital to Analogue Converter, 12 bit, 125 kSPS, Parallel, 14.25V to 15.75V, WSOIC, 24 RoHS Compliant: Yes
Richardson RFPD