VMIVME-4150 Isolated 12-Channel 12-bit Analog Output Board with Voltage or Current Outputs • 12 fully isolated analog outputs • Up to ±1,000 V isolation, channel-to-channel, and channel-to-VMEbus • 12-bit resolution • Voltage output ranges selectable as ±2.5, ±5, ±10 V; 0 to +2.5 V, 5 V, or 10 V • Voltage outputs protected to ±20 V indefinitely; transients to ±50 V • 10 mA load capacity for voltage outputs over full ±10 V range • Available with 4 to 20, 0 to 20, or 5 to 25 mA current loop outputs • 0.05 percent accuracy for voltage outputs, 0.08 percent for current loop outputs • 4-, 8-, and 12-channel configurations • Optical data coupling provides full galvanic isolation • Static readback data registers simplify program control • Front panel access • Program-controlled connect/disconnect operation of voltage outputs facilitates system testing • Overvoltage protection: IEEE-472 compatibility when used with companion VMIVME-3456 board APPLICATIONS • Isolated analog subsystems • Analog current loops • Nuclear facility instrumentation either the short I/O (A16) space or the standard (A24) • Automatic test equipment (ATE) memory space. Channel data is 12 bits, right-justified, • Supervisory control systems and can be either two’s complement or offset binary. • High interference environments • Intersystem analog data transmission • Ground loop elimination ADDR REGISTER DESIGNATION BYTES ACCESS GENERAL DESCRIPTION — The VMIVME-4150 0000h Board Identification (BIR) 4 R D16,D8 provides 12 isolated high quality 12-bit analog output channels 0004h Control and Status (CSR) 2 R/W on a single 6U form factor VMEbus board. Each channel is D16,D8 electrically isolated from all other channels and from the 0008h Channel 00 Data Register 2 R/W D16 VMEbus, as illustrated in the functional block diagram as --- --------- -- -- shown in Figure 1, and will operate with sustained isolation 001Eh Channel 11 Data Register 2 R/W D16 voltages as high as 1,000 V. Output voltage ranges are selectable as ±2.5, ±5, and ±10 V, or 0 to +2.5 V, 5 V, 10 V, Board Access: Short I/O (A16) address bits A05 and full 10 mA loading is supported throughout these ranges. through A15, or Standard (A24) address bits A05 Four-, eight-, and twelve-channel configurations are available. through A23, are compared with field-configurable jumpers for board selection. Address modifiers are Outputs can be disconnected or placed in a minimal state decoded to support supervisory or user access, or both under program control during system testing, and are privileges. The BIR and CSR support both D8 and D16 disconnected or placed in a minimal state automatically at data transfers. Channel 00 to 11 Data Register transfers reset. are 16-bit (D16) words. Optional current-mode outputs support applications which require standard 4 to 20, 0 to 20, or 5 to 25 mA analog Ordering Options current loops. Compliance of the current mode outputs is 9 V Nov. 19, 1996 800-004150-000 D ABC – D E F if the loop supply originates on the board, or 27 V with an VMIVME-4150 – – external loop power supply. A = Number of Channels 0 = 4 Channels 1 = 8 Channels A front panel Fail LED is provided. The LED light is 2 = 12 Channels turned ON during system reset and can be turned OFF under B = Voltage or Current Output Options 0 = Voltage Outputs, Bipolar user software control. 1 = 4 to 20 mA Current Loop Outputs 2 = 0 to 20 mA Current Loop Outputs 3 = 5 to 25 mA Current Loop Outputs FUNCTIONAL CHARACTERISTICS 4 = Voltage Outputs, Unipolar C = Outputs 0 = Reserved Control: Control of the VMIVME-4150 board takes 1 = On-Line/Off-Line or Minimal State Capable place through the following Control and Data Register For Ordering Information, Call: group, which can be located on any 16-word boundary in 1-800-322-3616 or 1-256-880-0444 • FAX (256) 882-0859 E-mail: info@vmic.com Web Address: www.vmic.com Copyright © August 1991 by VMIC Specifications subject to change without notice. VMIC • 12090 South Memorial Parkway • Huntsville, Alabama 35803-3308 1 VMIVME-4150 Gain Drift: ±30 PPM/°C ±75 PPM/1,000 hr Compatibility: This product complies with the VMEbus Specification ANSI/IEEE STD 1984-1987 IEC Offset Voltage Drift: ±10 μV/°C ±25 μV/1,000 hr 821 and 297: A16:D16/D08 (EO) DTB Slave Common-Mode Rejection: CMRR = 128 dB (DC); A24:D16/D08 (EO) 115 dB (60 Hz); relative to VMEbus power supply return 6U form factor Settling Time: 10 μs to 0.01 percent; time from ELECTRICAL CHARACTERISTICS (At 25 °C with rated power supply, unless otherwise DTACK assertion indicated.) Noise: ±6 mV full-scale, peak-to-peak, maximum, 1 GENERAL CHARACTERISTICS (ALL OUTPUTS) 10 Hz to 10 kHz, at 3 s Number of Output Channels: 4, 8, or 12; See the Interchannel Crosstalk: -80 dB at DC-1 kHz Ordering Options Output Protection: ±20 V indefinitely; ±50 V for 1 s Resolution: 12 bits CURRENT-MODE OUTPUTS Configuration: Differential, isolated Channel-to-Channel, Channel-to-VMEbus Current Range: 4 to 20, 0 to 20, or 5 to 25 mA; See the Ordering Options Common-Mode Voltage Range: CMV = ±1,000 V, Channel-to-Channel, Span: 16 or 20 mA, depending on current range Channel-to-VMEbus Compliance: 9 V with internal supply; 27 V with ISOLATION BARRIER external loop power supply Resistance: 50 MW minimum, Channel-to-Channel, Output Impedance: Greater than 10 MW, 0 to 25 V Channel-to-VMEbus Span Error: ±0.06 percent Capacitance: 100 pF maximum, Channel-to-Channel. 150 pF, Channel-to-VMEbus. Offset Current: ±4 μA Withstand Voltage: 1,000 Vpk (700 VRMS) Nonlinearity: 0.035 percent VOLTAGE OUTPUTS Span Drift: ±50 PPM/°C ±70 PPM/1,000 hr Voltage Ranges: Jumper-selectable as ±2.5, ±5, and Offset Current Drift: ±80 nA/°C ±10 V with the bipolar option, 0 to +2.5 V, +5 V, and ±250 nA/1,000 hr 10 V with the unipolar option Common-Mode Rejection: CMRR = 128 dB (DC); Output Drive: ±10 mA over full ±10 V dynamic range; 113 dB (60 Hz); relative to VMEbus power supply return 3,000 pF, no oscillation Settling Time: 30 μs to 0.01 percent Output Impedance: Connected Mode: Less than 0.8 WInterchannel Crosstalk: -80 dB at DC-1 kHz Disconnected Mode: Greater than 1 MW External Loop Supply: +30 VDC maximum Gain Error: ±0.04 percent maximum Voltage Offset: ±4 mV . 1. Three standard deviations (3 s ) include 99.7 percent of all Nonlinearity: 0.025 percent noise in a normal distribution. 2 For Ordering Information, Call: 1-800-322-3616 or 1-256-880-0444 • FAX (256) 882-0859 VMIVME-4150 PHYSICAL/ENVIRONMENTAL Power Requirements: 6.5 A maximum at +5 VDC, all outputs fully loaded Temperature: 0 to +65 °C, operating -20 to +85 °C, storage RELATED PRODUCTS AND APPLICATIONS — VMIC offers a broad range of Analog Input/Output (AIO) Humidity: 10 to 80 percent, relative noncondensing products for VMEbus systems, and supports these products with comprehensive applications information. Contact Altitude: Operation to 3,000 m VMIC for a description of current products and a list of application guides. Cooling: Forced air convection (Standard VME slot) For IEEE-472 transient protection, refer to the Dimensions: Double height Eurocard (6U), VMIVME-3456 specification. 160 x 233.35 mm TRADEMARKS Weight (Mass): 0.7 kgm maximum The VMIC logo is a registered trademark of VMIC. System Cable Connectors: Front panel P3 and P4 Other registered trademarks are the property of their connectors; standard subminiature D 37-pin male respective owners. connectors OUTPUT CHANNEL 00 (1 OF 12 IDENTICAL CHANNELS) FRONT PANEL P3 (VOLTAGE OUTPUT) 4-CHANNEL BUFFER OPTO-ISOLATOR SHIFT SERIAL DATA REGISTER 12-bit 1 OUT 00 1 D/A VOLTAGE CLK/LOAD OR 2 CURRENT 12 2 CONNECT/ DISCONNECT DATA RANGE RANGE LATCH VREF ON-LINE 2.5, 5, 10 V 1 1 ISOLATED 12 (CURRENT OUTPUT) +5 V DC-TO-DC ±15 V CONV E-EXT 00 V/I CONV ISOLATION ISOLATED BARRIER GROUND-00 INT EXT LOOP SUPPLY CHANNEL ISOLATED INTERNAL CONTROL GROUND COMM 00 DATA BUS PLANE VMEbus P1 ISOLATED GROUND-00 (N/C) GUARD 3 VME COMPATIBILITY INTERFACE TO CHANNELS 01 TO 11 +5 V Figure 1. VMIVME-4150 Functional Block Diagram VMIC • 12090 South Memorial Parkway • Huntsville, Alabama 35803-3308 3