MP7645B

FEATURES w w Greater than 2000 V ESD Protection Differential Linearity +1/2 LSB Tmin to Tmax Microprocessor Compatible Low Glitch Energy Gain Error Tempco (2 ppm/°C max) Low Sensitivity to Amplifier Offset a D . w S a t e e h U 4 t m o .c MP7645B CMOS Buffered Multiplying 12-Bit Digital-to-Analog Converter Four Quadrant Multiplication Latch-Up Free TTL/5 V CMOS Compatible Guaranteed Monotonic GENERAL DESCRIPTION The MP7645B is an improved precision, monolithic 12-bit CMOS 4-quadrant multiplying DAC with an on-board data latch. The latch is loaded by a single 12-bit wide word. Data is loaded into the input latch under the control of CS and WR inputs. These control inputs are level triggered; tying these inputs low makes the input latch transparent allowing direct unbuffered operation of the DAC. – Stability – The MP7645B incorporates a unique decoding technique yielding excellent accuracy and stability over tem- SIMPLIFIED BLOCK DIAGRAM w Rev. 2.00 w .D w VREF CS WR t a VDD S a e h perature. Monotonicity is guaranteed over the entire temperature range including the industrial and military ranges. The gain error specification of 2 ppm/°C over a 100°C temperature range equals 0.8 LSB of error. – Digital Feedthrough – The MP7645B has 5 to 8 times less digital feedthrough than similar buffered DACs. – Low Sensitivity to Output Amplifier Offset – The additional linearity error incurred by amplifier offset is reduced by a factor of at least 3 ...