16-bit Multiplying Microprocessor-compatible D/a Converter16-bit Multiplying Microprocessor-compatible D/A Converter Corporation,The ICL7121 achieves 0.003% linearity without laser
trimming by combining a four quadrant multiplying DAC
using thin film resistors with an on-chip PROM-controlled
correction circuit. Silicon-gate CMOS circuitry keeps the
power dissipation very low.
Microprocessor bus interfacing is eased using standard
memory WRITE cycle Timing and control. The input Buffer Register is loaded with the 16-bit input and directly controls
the output switches. The Register is transparent if WR and
CS are held low.
The ICL7121 is designed and programmed for bipolar
operation. There is an offset resistor to the output which
should be connected to -VREF and an inverter on the MSB
line, giving the DAC a 2s complement bipolar transfer
function. Two extra resistors are included on the chip to
facilitate the reference inversion, so that only an external op-
amp is needed. By Intersil Corporation
|
|
ICL7121 Pb-Free | ICL7121 Cross Reference | ICL7121 Schematic | ICL7121 Distributor |
ICL7121 Application Notes | ICL7121 RoHS | ICL7121 Circuits | ICL7121 footprint |