SMP04

a FEATURES Four Independent Sample-and-Holds Internal Hold Capacitors High Accuracy: 12 Bit Very Low Droop Rate: 2 mV/s typ Output Buffers Stable for C L ≤ 500 pF TTL/CMOS Compatible Logic Inputs Single or Dual Supply Applications Monolithic Low Power CMOS Design APPLICATIONS Signal Processing Systems Multichannel Data Acquisition Systems Automatic Test Equipment Medical and Analytical Instrumentation Event Analysis DAC Deglitching CMOS Quad Sample-and-Hold Amplifier SMP04* FUNCTIONAL BLOCK DIAGRAM VDD SMP04 VIN1 S/H1 VSS VIN2 S/H2 VSS VIN3 S/H3 VSS VIN4 S/H4 VSS VOUT4 VOUT3 VOUT2 VOUT1 VSS DGND GENERAL DESCRIPTION The SMP04 is a monolithic quad sample-and-hold; it has four internal precision buffer amplifiers and internal hold capacitors. It is manufactured in ADI’s advanced oxide isolated CMOS technology to obtain the high accuracy, low droop rate and fast acquisition time required by data acquisition and signal processing systems. The device can acquire an 8-bit input signal to ± 1/2 LSB in less than four microseconds. The SMP04 can operate from single or dual power supplies with TTL/CMOS logic compatibility. Its output swing includes the negative supply. The SMP04 is ideally suited for a wide variety of sample-andhold applications, including amplifier offset or VCA gain adjustments. One or more can be used with single or multiple DACs to provide multiple setpoints within a system. The SMP04 offers significant cost and size reduction over equivalent module or discret...