Standard Products Datasheet RadHard-by-Design RHD5958 8-Channel Multiplexed 14-Bit Analog-to-Digital Converter www.aeroflex.com/RHDseries March 6, 2014 FEATURES Single power supply operation 5.0V or Dual power supply for 3.3V I/O Radiation performance - Total dose: > 1 Mrad(Si); Dose rate = 50 - 300 rads(Si)/s - ELDRS Immune - SEL Immune > 100 MeV-cm2/mg - Neutron Displacement Damage > 1014 neutrons/cm2 8-Channel Input Multiplexer Successive Approximation A-to-D Level Shifting Digital Output Drivers allow interfaces to 5.0 or 3.3 volt logic Tri-State digital outputs Power Down (Sleep) mode Single or continuous conversion 20us conversion period (20 clocks @ 1MHz Clock rate) Multiplexer address is latched on first clock rising edge of a cycle Busy and End-of-Conversion status outputs 2000V Input/Output ESD protection Full military temperature range Designed for aerospace and high reliability space applications Packaging – Hermetic Ceramic - 40 leads, 0.600"Sq x 0.120"Ht quad flat pack - Weight - 6 grams max Aeroflex Plainview’s Radiation Hardness Assurance Plan is DLA Certified to MIL-PRF-38534, Appendix G. GENERAL DESCRIPTION Aeroflex’s RHD5958 is a radiation hardened, single supply, 8-Channel Multiplexed Analog-to-Digital converter in a 48-pin Ceramic Quad Flat Package. The RHD5958 design uses specific circuit topology and layout methods to mitigate total ionizing dose effects and single event latchup. These characteristics make the RHD5958 especially suited for the harsh environment encountered in Deep Space missions. It is guaranteed operational from -55°C to +125°C. Available screened in accordance with MIL-PRF-38534 Class K, the RHD5958 is ideal for demanding military and space applications. ORGANIZATION AND APPLICATION The RHD5958 takes 8 analog sensor signals and using 3 address inputs and an enable input, selects one of the 8 analog inputs and performs a 14-bit successive approximation analog-to-digital conversion in a nominal period of 20uS. The 14-bit digital output has a tri-state control allowing the connection of multiple RHD5958s. This provides the ability to interface many sensor voltage readings to the digital processor data bus. The full-scale range is determined by reference input voltages. The input impedance of the reference/span terminals is typically a constant 4K ohms. SCD5958 Rev A Gain compression will occur near either power supply extremes but can be avoided if the references are more than 200mV away from the respective supply terminals. The input span can be less than 4 volts at the expense of ultimate resolution The analog channels input impedance is primary capacitance (20pF typical). The input voltage charges a track-and-hold hold capacitor through transmission gates. The input bandwidth is determined by the slew rate of the hold amplifier and is adequate to allow input sampling in three clock periods (3uS nominal). The ultimate bandwidth is determined by the aperture uncertainty associated with the closing of the sample gate (approximately 5nS). The converter bandwidth is then determined by the sampling Nyquist frequency rather than the input signal; change rate (dv/dt) and the LSB weight in volts as would be the case if there were no sample and hold. Start-Convert (STCNV_H), Busy (BUSY_L) and End-Of-Convert (EOC_H) status and control line are provided. The converter will operate in either continuous or single conversion modes. To operate in continuous mode, STCNV_H should be tied to BUSY_L. The digital output register changes at the end of a conversion and is available when EOC_H is asserted High. The output circuitry operates from a voltage independent of the remainder of the chip such that I/O is compatible with digital systems from, less than 3.3 volts, to 5 volts. The converter divides the reference voltage into 16 segments with a linear weighted resistor network. The voltage on any segment is passed to a linear 10-bit DAC for interpolation. The architecture is inherently capable of monotonic operation. Typically INL is 0.12% FSR and DNL is < 0.03% FSR. The sampled input voltage is compared to the output of the two stage DAC for a 14-bit successive approximation conversion. All inputs are protected to both power supply rails by semiconductor diodes. Inputs should be constrained to VCC +0.4 and GND-0.4 to avoid forward biasing protection paths. The devices will not latch with SEU events to above 100 MeV-cm2/mg. Total dose degradation is minimal to above 1 Mrad(Si). Displacement damage environments to neutron fluence equivalents in the mid 1014 neutrons per cm2 range are readily tolerated. There is no sensitivity to low-dose rate (ELDRS) effects. SEU effects are application dependent. Notes: - The STCNV_H is a dynamic input (positive edge triggered) and should not be tied to a static voltage. - The input signals should be low pass filtered to reduce high frequency noise - If Sleep mode is enabled (EN_H=0), when waking up (EN_H=1), the unit has to complete an entire conversion cycle so the digital logic is in the proper state. Ex. If using a 1MHz clock; after EN_H=1 and 20us after STCNV_H is applied. SCD5958 Rev A 3/6/14 2 Aeroflex Plainview FIGURE 1: BLOCK DIAGRAM SCD5958 Rev A 3/6/14 3 Aeroflex Plainview ABSOLUTE MAXIMUM RATINGS Parameter Range Units Case Operating Temperature Range -55 to +125 °C Storage Temperature Range -65 to +150 °C Junction Temperature +150 °C Supply Voltage VCC - GND +6.0 V VCC +0.4 GND -0.4 V Lead Temperature (soldering, 10 seconds) 300 °C Thermal Resistance, Junction to Case,jc 3.5 °C/W 2,000 - 3,999 V Input Voltage, PREF, NREF ESD Rating (per MIL-STD-883, Method 3015, Class 2) NOTICE: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress rating only; functional operation beyond the “Operation Conditions” is not recommended and extended exposure beyond the “Operation Conditions” may affect device reliability. RECOMMENDED OPERATING CONDITIONS Symbol Parameter Typical Units +AvCC Analog Power Supply Voltage 5.0 V +DvCC Digital Power Supply Voltage 5.0 V DRVP Digital Output High Reference Level 3.3 to 5.0 V DRVN Digital Output Low Reference Level 0 V PREF High Analog Reference Voltage 4.5 V NREF Low Analog Reference Voltage 0.5 V ELECTRICAL PERFORMANCE CHARACTERISTICS (TC = -55°C TO +125°C, +AVCC = +5.0V, +DVCC = +5.0V, +DRVP = +5.0V) Parameter Symbol Conditions Min Max Units Analog Supply Current Quiescent AICCQ VEN = DvCC, CLK = 0V - 10 mA Analog Supply Current Active AICCA VEN = DvCC - 10 mA Analog Supply Current Sleep AICCS VEN = DGND - 4 mA Digital Supply Current Quiescent DICCQ VEN = DvCC, CLK = 0V - 1 mA Digital Supply Current Active DICCA VEN = DvCC - 2 mA Digital Supply Current Sleep DICCS VEN = DGND - 1 mA Digital Output Supply Current Quiescent IDRVPQ VEN = DvCC, CL = 50pF, CLK = 0V - 0.1 mA Digital Output Supply Current Active IDRVPA VEN = DvCC, CL = 50pF - 1 mA Digital Output Supply Current Sleep IDRVPS VEN = DGND, CL = 50pF - 1 mA VNREF VPREF V TC = +25°C - 50 pF 2 6 KΩ 0.67 2 mA DVRP = 5.0 V VNREF 5.0 DVRP = 3.3 V VNREF 5.0 DVRP = 5.0 V 0 VPREF DVRP = 3.3 V 0 VPREF Full-scale Input Range VIN Input Capacitance 2/ CIN Analog Reference Impedance ZREF PREF to NREF High Analog Reference Current IPREF PREF - NREF = 4V High Analog Reference Voltage VPREF Low Analog Reference Voltage SCD5958 Rev A 3/6/14 VNREF 4 V Aeroflex Plainview ELECTRICAL PERFORMANCE CHARACTERISTICS (TC = -55°C TO +125°C, +AVCC = +5.0V, +DVCC = +5.0V, +DRVP = +5.0V) Parameter Symbol Conditions Min Max Units Integral Nonlinearity INL PREF-NREF = 4.5V - 0.25 %FSR Differential Nonlinearity DNL PREF-NREF = 4.5V - 0.05 %FSR Offset Error OE PREF-NREF = 4.5V - 0.012 %FSR Gain Error AE PREF-NREF = 4.5V -0.006 0.006 %FSR Channel Isolation 2/ ISO TC = +25°C 80 - dB PREF-NREF = 4.5V - 1 MHz fC = 1 MHZ, 20 clocks per conversion - 50 kSPS +25°C -5 5 +125°C -50 50 +25°C -5 5 +125°C -50 50 DVRP = 5.0 V 3.0 - DVRP = 3.3 V 2.2 - DVRP = 5.0 V - 2.0 DVRP = 3.3 V - 1.2 +25°C -5 5 +125°C -50 50 +25°C -5 5 +125°C -50 50 DVRP = 5.0 V, VEN = DvCC, IOH = -1.0mA 4.6 - DVRP = 5.0 V, VEN = DvCC, IOH = -4.0mA 4.2 - DVRP = 3.3 V, VEN = DvCC, IOH = -1.0mA 3.0 - DVRP = 3.3 V, VEN = DvCC, IOH = -4.0mA 2.7 - DVRP = 5.0 V, VEN = DvCC, IOH = +1.0mA - 0.4 Clock Frequency Maximum Sampling Rate fC fSAMPLE (MAX) High Input Leakage Current (AIN00-AIN07) 3/ IINLKHI Input under test = AvCC, VEN = DVCC Low Input Leakage Current (AIN00-AIN07) 3/ IINLKLO Input under test = AGND, VEN = DVCC Digital High Level Input Voltage EN_H, STCNV_H, OE_H, CLK, (AD00-AD02) VIH Digital Low Level Input Voltage EN_H, STCNV_H, OE_H, CLK, (AD00-AD02) VIL Digital High Level Input Current EN_H, STCNV_H, OE_H, CLK, (AD00-AD02) 3/ IIH DVRP = 5.0 V Digital input under test = 5.0 V All other digital inputs = DGND IIL DVRP = 5.0 V All digital inputs = DGND Digital Low Level Input Current EN_H, STCNV_H, OE_H, CLK, (AD00-AD02) 3/ Digital High Level Output Voltage (B00-B13) Digital Low Level Output Voltage (B00-B13) Digital High Level Output Current (B00-B13) Digital Low Level Output Current (B00-B13) High Output Leakage Current (B00-B13) 3/ Low Output Leakage Current (B00-B13) 3/ VOH VOL DVRP = 5.0 V, VEN = DvCC, IOH = +4.0mA 0.6 DVRP = 3.3 V, VEN = DvCC, IOH = +1.0mA 0.4 DVRP = 3.3 V, VEN = DvCC, IOH = +4.0mA 0.6 IOH DVRP = 5.0 V, VEN > 3.0 V - -4.0 (SOURCE) DVRP = 3.3 V, VEN > 2.2 V - -4.0 IOL DVRP = 5.0 V, VEN > 3.0 V - 4.0 (SINK) DVRP = 3.3 V, VEN > 2.2 V - 4.0 +25°C -5 5 +125°C -50 50 +25°C -5 5 +125°C -50 50 IOUTLKHI IOUTLKLO VOE = DGND VOE = DGND nA V nA V mA nA Notes: 1/ Specification derated to reflect Total Dose exposure to 1 Mrad(Si) @ +25°C. 2/ Not tested. Shall be guaranteed by design, characterization, or correlation to other test parameters. 3/ These parameters for Tc = -55°C are guaranteed by design, characterization, or correlation to other test parameters. SCD5958 Rev A 3/6/14 5 Aeroflex Plainview Pin # Signal Definition Pin # Signal Definition 1 AVCC Analog Supply Voltage 21 B10 Digital Output 10 2 DVCC Digital Supply Voltage 22 B11 Digital Output 11 3 AD02 Multiplexer Address 02 23 B12 Digital Output 12 4 AD01 Multiplexer Address 01 24 B13 Digital Output 13 5 AD00 Multiplexer Address 00 25 EOC_H End of Convert 6 CASE Case Ground 26 BUSY_L Busy 7 STCNV_H Start Conversion 27 DRVN Digital Output Low Reference Level 8 EN_H Multiplexer Enable 28 DRVP Digital Output High Reference Level 9 OE_H Output Enable 29 DGND Digital Supply Return 10 CLK Clock Input 30 AGND Analog Supply Return 11 B00 Digital Output 00 31 PREF High Analog Reference Voltage 12 B01 Digital Output 01 32 AIN07 Analog Multiplexer Input 07 13 B02 Digital Output 02 33 AIN06 Analog Multiplexer Input 06 14 B03 Digital Output 03 34 AIN05 Analog Multiplexer Input 05 15 B04 Digital Output 04 35 AIN04 Analog Multiplexer Input 04 16 B05 Digital Output 05 36 AIN03 Analog Multiplexer Input 03 17 B06 Digital Output 06 37 AIN02 Analog Multiplexer Input 02 18 B07 Digital Output 07 38 AIN01 Analog Multiplexer Input 01 19 B08 Digital Output 08 39 AIN00 Analog Multiplexer Input 00 20 B09 Digital Output 09 40 NREF Low Analog Reference Voltage FIGURE 2: PACKAGE PIN-OUT AND SIGNAL DEFINITION TRUTH TABLE (AIN00 – AIN07) AD02 AD01 AD00 EN_H "ON" CHANNEL X X L L X L NONE L H AIN00 L L L H H AIN01 H L H AIN02 L H H H H AIN03 L L H AIN04 H L H H AIN05 H H L H AIN06 H H H H AIN07 FIGURE 3: TRUTH TABLE SCD5958 Rev A 3/6/14 6 Aeroflex Plainview FIGURE 4: BASIC TIMING DIAGRAM Note: Outside ceramic tie bars not shown for clarity. Contact factory for details. FIGURE 5: PACKAGE OUTLINE SCD5958 Rev A 3/6/14 7 Aeroflex Plainview ORDERING INFORMATION Model DLA SMD # Screening RHD5958-7 - Commercial Flow, +25°C testing only RHD5958-S - Military Temperature, -55°C to +125°C Screened in accordance with the individual Test Methods of MIL-STD-883 for Space Applications RHD5958-201-1S 5962-1221101KXC In accordance with DLA SMD RHD5958-901-1S 5962H1221101KXC DLA SMD and Radiation Certification Pending Package 40-lead CQFP EXPORT CONTROL: EXPORT WARNING: This product is controlled for export under the International Traffic in Arms Regulations (ITAR). A license from the U.S. Department of State is required prior to the export of this product from the United States. Aeroflex’s military and space products are controlled for export under the International Traffic in Arms Regulations (ITAR) and may not be sold or proposed or offered for sale to certain countries. (See ITAR 126.1 for complete information.) PLAINVIEW, NEW YORK Toll Free: 800-THE-1553 Fax: 516-694-6715 INTERNATIONAL Tel: 805-778-9229 Fax: 805-778-1980 NORTHEAST Tel: 603-888-3975 Fax: 603-888-4585 SE AND MID-ATLANTIC Tel: 321-951-4164 Fax: 321-951-4254 WEST COAST Tel: 949-362-2260 Fax: 949-362-2266 CENTRAL Tel: 719-594-8017 Fax: 719-594-8468 www.aeroflex.com [email protected] Aeroflex Microelectronic Solutions reserves the right to change at any time without notice the specifications, design, function, or form of its products described herein. All parameters must be validated for each customer's application by engineering. No liability is assumed as a result of use of this product. No patent licenses are implied. SCD5958 Rev A 3/6/14 Our passion for performance is defined by three attributes represented by these three icons: solution-minded, performance-driven and customer-focused 8