AD7248AARZ

Semiconductors - ICs

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Series Information for AD7248AARZ - Analog Devices

Features

  • feature
    12-Bit CMOS DAC with Output Amplifier and Reference Improved AD7245/AD7248: 12 V to 15 V Operation u2d1e1/2 LSB Linearity Grade Faster Interfaceu201430 ns Typ Data Setup Time Extended Plastic Temperature Range (u201340u2d17C to +85u2d17C) Single or Dual Supply Operation Low Poweru201465 mW Typ in Single Supply Parallel Loading Structure: AD7245A (8+4) Loading Structure: AD7248A

Description

DACPORT 12BIT SMD WSOIC20 7248

The AD7245A/AD7248A is an enhanced version of the industry standard AD7245/AD7248. Improvements include operation from 12 V to 15 V supplies, a ±1/2 LSB linearity grade, faster interface times and better full scale and reference variations with VDD. Additional features include extended temperature range operation for commercial and industrial grades. The AD7245A/AD7248A is a complete, 12-bit, voltage output, digital-to-analog converter with output amplifier 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 double-buffered interface logic. The AD7245A accepts 12-bit parallel data that is loaded into the input latch on the rising edge of CS or WR. The AD7248A has an 8-bit-wide data bus with data loaded to the input latch in two write operations. For both parts, an asynchronous LDAC signal transfers data from the input latch to the DAC latch and updates the analog output. The AD7245A also has a CLR signal on the DAC latch which allows features such as power-on reset to be implemented. The on-chip 5 V buried Zener diode provides a low noise, tem- perature compensated reference for the DAC. 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 capa- ble of developing 10 V across a 2 kΩ load to GND. The AD7245A/AD7248A is fabricated in linear compatible CMOS (LC2 MOS), an advanced, mixed technology process that combines precision bipolar circuits with low power CMOS logic. The AD7245A is available in a small, 0.3" wide, 24-lead DIP and SOIC and in 28-terminal surface mount packages. The AD7248A is packaged in a small, 0.3" wide, 20-lead DIP and SOIC and in 20-terminal surface mount packages. DACPORT is a registered trademark of Analog Devices, Inc. AD7245A FUNCTIONAL BLOCK DIAGRAM DB0 DB11 DGND VSS AGND VDD REF OUT ROFS RFB VOUT AD7245A

Specifications

Resolution (Bits):
12bit
Sampling Rate:
142kSPS
Input Channel Type:
Parallel
Supply Voltage Range:
± 10.8V to ± 16.5V
ADC / DAC Case Style:
SOIC
No. of Pins:
20Pins
Data Interface:
Parallel
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Product Range:
-
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
Yes
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (07-Jul-2017)
Base Number:
7248
Conversion Time:
7µs
IC Case Style:
SOIC
Linearity Error ADC / DAC +:
0.75LSB
No. of Bits:
12bit
Operating Temperature Range:
-40°C to +85°C
Output Type:
Voltage
Sample Rate:
142kSPS
Settling Time:
7µs
Supply Current:
5mA
Supply Voltage Max:
16.5V
Supply Voltage Min:
10.8V
Termination Type:
Surface Mount Device

Alternate Descriptions

Richardson RFPD
CONVERTER - DAC