ISPPAC81

www.DataSheet4U.com ispPAC81 In-System Programmable Analog Circuit October 2001 Data Sheet Features ■ In-System Programmable(ISP™) Analog Instrument Amplifier Gain Stage Precision Active Filtering (10kHz to 75kHz) Continuous-Time Fifth Order Low Pass Topology Dual, A/B Configuration Memory Non-Volatile E2CMOS® Cells IEEE 1149.1 JTAG Serial Port Programming Functional Block Diagram TMS TCK TDI TDO CS CAL ENSPI GND 1 2 IA OA 16 VS 15 TEST 14 OUT+ 5th Order LPF E2CMOS Cfg A Ref & Auto-Cal E2CMOS Cfg B ISP Control 3 4 5 6 7 8 13 OUT– 12 TEST 11 IN+ 10 IN– 9 VREFOUT ■ Unique Flexibility and Performance Programmable Gain Range (0dB to 20dB) Implements Multiple Filter Types: Elliptical, Chebyshev, Butterworth Low Distortion (THD < -80dB at 10kHz) Auto-Calibrated Input Offset Voltage ■ True Differential I/O High CMR Instrument Amplifier Input 2.5V Common Mode Reference on Chip Rail-to-Rail Voltage Outputs ispPAC81 Description The ispPAC81 is a member of the Lattice family of In-System Programmable analog circuits, digitally configured via nonvolatile E2CMOS technology. DataSheet4U.com Analog building blocks, called PACell™(s), replace traditional analog components such as opamps, eliminating the need for external resistors and capacitors. With no requirement for external configuration components, ispPAC81 expedites the design process, simplifying prototype circuit implementation and change, while providing high-performance integrated functionality. With...