14-bit Multiplying Microprocessor-compatible D/a Converter

The ICL7134 combines a four-quadrant multiplying DAC using thin film resistor and CMOS circuitry with an on-chip PROM-controlled correction circuit to achieve true 14-bit linearity without laser trimming. Microprocessor bus interfacing is eased using standard memory WRITE cycle Timing and control signal use. Two input Buffer Registers are separately loaded with the 8 least significant bits (LS register) and the 6 most significant bits (MS register). Their contents are then transferred to the 14-bit DAC Register which controls the current switches. The DAC Register CAN also be loaded directly from the data inputs, in which case the MS and LS Registers are transparent. The ICL7134 is available in two versions. The ICL7134U is programmed for unipolar operation while the ICL7134B is programmed for bipolar applications. The VREF input to the most significant bit of the DAC is separated from the reference input to the remainder of the ladder. For unipolar use, the two reference inputs are tied together, while for bipolar operation, the polarity of the MSB reference is reversed, giving the DAC a true 2s complement input transfer function. Two resistors which facilitate the reference inversion are included on the chip, so only an external op-amp is needed. The PROM is coded to correct for errors in these resistors as well as the inversion of the MSB. By Intersil Corporation
ICL7134 's PackagesICL7134 's pdf datasheet
ICL7134BJCJI
ICL7134BJIJI
ICL7134BJMJI
ICL7134BKCJI
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ICL7134BKMJI
ICL7134BLCJI
ICL7134BLIJI
ICL7134BLMJI
ICL7134UJCJI
ICL7134UJIJI
ICL7134UJMJI
ICL7134UKCJI
ICL7134UKIJI
ICL7134UKMJI
ICL7134ULCJI
ICL7134ULIJI
ICL7134ULMJI




ICL7134 Pinout, Pinouts
ICL7134 pinout,Pin out
This is one package pinout of ICL7134,If you need more pinouts please download ICL7134's pdf datasheet.

ICL7134 Application circuits
ICL7134 circuits
This is one application circuit of ICL7134,If you need more circuits,please download ICL7134's pdf datasheet.


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