Instrumentation Grade Performance 24-Bit ADC For PC/104 MPC624 Features Δ Δ24-bit Δ ΔΣ Δ A/D converter Multi-channel with single cycle settling Fault protection on analog/digital Direct connect to sensors Input range ±10.1Vdc or ±1.01Vdc Selectable Z per channel in Opto isolated digital I/O Excitation supply CC/CV Onboard temperature sensor Extended temperature range available The MPC624 PC/104 expansion board offers two Whether the application is for the measurement measurement functions for the A/D user: voltage of voltage from scientific instrumentation or sen- measurements with instrumentation grade accu- sors, the user connects into a 5-pin screw termi- racy, and direct connection to sensors. When nal, which provides measurement, shielding and mounted in a PC/104 stack, the MPC624 pro- excitation sourcing. vides voltage readings with instrumentation grade accuracy up to 6.5 digits. Screw terminals allow With an external shunt connected to the screw the board to connect directly to all common terminals, the MPC624 can measure all funda- sensors without any external signal conditioning. mental electrical parameters: voltage, current, For sensors that require excitation, the board and resistance. The MPC624 can also measure provides constant current (CC) and constant four onboard parameters: secondary reference, voltage (CV) through a matrix of jumpers to temperature, excitation current, and power all channels. supplies. Software Support Compatible Hardware Mounting/Packaging Example code for all Any Micro/sys CPU with PC/104 standard functions PC/104 expansion connector ™ C-code/Mathcad for [See Section 1] advanced algorithms RUN.EXE, GSDOS, MSDOS, Windows98/CE/NTe, Linux, ® VxWorks Micro/sys 3730 Park Place, Montrose, CA 91020 (818)244-4600 Fax (818)244-4246 email: info@embeddedsys.com DIO Analog Inputs: LEDs � 4 differential channels total, with selectable Isolation 11 Z of 10k, 100k, or 10 Ω IN � Input range of ±10.1V, ±1.01V with ±40V P CPLD EEPROM fault protection and CM/DM filters Read/Write C/ � Noise level on 1V range @ 6.875Hz: IRQ 1.2uVrms, 20.7-bits, .6ppm 1 Temperature � Noise level on 10V range @ 6.875Hz: Excitation 0 Ref #1 5.2uVrms, 21.9-bits, .26ppm Power 24-Bit Ref #2 Supply 4 � SFDR @ 6.875Hz: -130dB A/D Power Supply � Long term stability @ 6.9Hz ±3ppm � TC: uncompensated <10ppm/°C, software/ Excitation Fault Protection, MUX, Gain LPF CC/CV temp compensated <1ppm/°C Z in � CMRR: -95dB 4 Channels Ain � 50/60Hz rejection: -80dB � Channel to channel cross-talk: -145dB Specifications: � 10 conversion speeds (6.875Hz to 3.52Khz) with accuracy/speed trade-off Mechanical: � Monitoring of onboard secondary reference � PC/104 standard for system integrity check � 3.55" (plus I/O region) x 3.775" � Onboard temp sensor for calibration and thermocouple “CJ” compensation Power Requirements and switching: � Monitoring of onboard excitation current � +5v ±5% 120mA typical, 300mA max � Monitoring of onboard power supplies Environmental: External Connections: � 0° - +70°C operating � 5-pin screw terminal per analog input � -40 - +85°C operating, -ET version � 5-pin screw terminal for isolated I/O � 5%-95% relative humidity, non-condensing Ordering Information: Excitation Source: � Jumpers set board to CC or CV MPC624 24-bit, 2-channel analog � CC (1, 4, or 18mAdc) with Vdc limit input � CV (5, 6, or 9Vdc) with mAdc limit MPC624-ET 24-bit, 2-channel analog input, extended temperature PC/104 Interface: operation � 8-bit transfers 624OPT11 2 additional analog channels � IRQ 2-7 supported 624OPT21 Isolated I/O, 2in/2out � IRQ 10,11,12,14,15 supported if optional 624OPT90 Excitation CC/CV 16-bit connector installed MPCOPT16ST 16-bit PC/104 stackthrough connector Isolated Digital I/O: Add -ET to option for extended temp operation � 2 D , r 10Ω, sink 200mA @ 250V OUT ON PK � 2 D , source 3 – 32Vdc, 16mA Max IN Mathcad trademark MathSoft Engineering and Education, Inc. � Any/all inputs can generate an IRQ � Read-back function on outputs � 8 user LEDs Micro/sys 3730 Park Place, Montrose, CA 91020 (818)244-4600 Fax (818)244-4246 email: info@embeddedsys.com