Document
Standard Products
RadHard-by-Design
Preliminary
RHD5911 Quad Comparator
Clocked
www.aeroflex.com/RHDseries
March 2, 2012
FEATURES
❑ Single power supply operation at 3.3V or 5.0V
❑ Radiation performance
- Total dose:
>1Mrad(Si); Dose rate = 50 - 300 rads(Si)/s
- ELDRS Immune - SEL Immune - Neutron Displacement Damage
>100 MeV-cm2/mg >1014 neutrons/cm2
❑ Ultra low power ❑ Short Circuit Tolerant ❑ Full military temperature range ❑ Designed for aerospace and high reliability space applications ❑ Packaging – Hermetic ceramic SOIC
- 16-pin, .411"L x .293"W x .090"Ht
- Weight - 0.8 grams max
❑ Aeroflex Plainview’s Radiation Hardness Assurance Plan is DLA Certified to MIL-PRF-38534, Appendix G.
GENERAL DESCRIPTION
Aeroflex’s RHD5911 is a radiation hardened, single supply, quad clocked comparator in a 16-pin SOIC package. The RHD5911 design uses specific circuit topology and layout methods to mitigate total ionizing dose effects and single event latchup. These characteristics make the RHD5911 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 RHD5911 is ideal for demanding military and space applications.
ORGANIZATION AND APPLICATION
The RHD5911 quad clocked comparator is intended for operation with dynamic signals on either or both inputs. Comparison is ’clocked’, that is the circuit functions as a regenerative clocked latch with a digital output. For slow input signals with small input differences the comparators can be expected to respond to small noise signals at the inputs. Feedback hysteresis is the responsibility of the user to avoid ’chattering’ on system noise.
The comparators will accept signals from (GND + 0.8V) to VCC. The max clocked frequency is 50MHz. The max clock-to-output delay is 10ns.
CMOS device drives have a negative temperature coefficient and the devices are therefore inherently tolerant to momentary shorts, although on chip thermal shutdown is not provided. All inputs and outputs are diode protected.
The devices will not latch with SEU events above 100 Mev-cm2/mg. Total dose degradation is minimal to above 1Mrad(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 dependant.
The RHD5911 16-pin clocked comparator allow pairs of comparators to access and hold data until needed.
SCD5911 Rev C
OUT_B OUT_A CLK_AB
VCC -IN_A +IN_A -IN_B +IN_B
1 16 2 15 3 14
4 5911 13
5 12 6 11 7 10 89
16-Pin SOIC
OUT_C OUT_D CLK_CD GND +IN_D -IN_D +IN_C -IN_C
+IN_A
-IN_A CLK_AB
+IN_B -IN_B
VCC
4 6
5A
2 OUT_A
3 8 7B
1 OUT_B
+IN_C -IN_C CLK_CD +IN_D -IN_D
10 9C
16 OUT_C
14
12 11 D
15 OUT_D
13
Notes: 1. Package and lid are electrically isolated from signal pads. 2. CLK_AB clocks comparator A & B. CLK_CD clocks comparator C & D.
RHD5911: QUAD CLOCKED COMPARATOR
Power Supply Alarm
+5V
PSSENSE-1
PSSENSE-2 PSSENSE-3
R1 R2 R3
PS1 PS2 PS3
PSSENSE-4
R4 R5
PS4 CPU_CLK
RHD5911: QUAD CLOCKED COMPARATOR
SCD5911 Rev C Preliminary 3/2/12
2
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
+6.0 V
Input Voltage
VCC +0.4 GND -0.4
V V
Lead Temperature (soldering, 10 seconds)
300 °C
ESD Rating
2.0 KV
Power @ 25°C
250 mW
NOTICE: Stresses above those listed under "Absolute Maximums Rating" 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.
Symbol +VCC VCM
RECOMMENDED OPERATING CONDITIONS
Power Supply Voltage Input Common Mode Range
Parameter
Typical 3.3 to 5.0 VCC to GND
Units V V
ELECTRICAL PERFORMANCE CHARACTERISTICS
(TC = -55°C TO +125°C, +VCC = +5.0V -- UNLESS OTHERWISE SPECIFIED)
Parameter
Symbol
Conditions
Min
Input Offset Voltage 1/ Input Offset Current 2/ Input Bias Current 2/ Input Offset TempCo 2/
VOS IOS IB VIOST
-2 -1 -2
Common Mode Rejection Ratio 1/ Power Supply Rejection Ratio 1/ Output Voltage High 1/ Output Voltage Low 1/
CMRR
PSRR VOH VOL
IOUT = 5mA IOUT = 5mA
70 70 4.9
Input Voltage - Clock (CLK_AB, CLK_CD) 2/
VHI
High
70% VCC
Input Voltage - Clock (CLK_AB, CLK_CD) 2/
VLO
Low
Input Current - Clock (CLK_AB, CLK_CD) 2/
ICLK
Quiescent Supply Current 1/
ICCQ
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.
Typ
Max Units 2 mV 1 pA 2 pA 10 V/C
dB
0.1
30% VCC
1
dB V V V
V nA
10 A
SCD5911 Rev C Preliminary 3/2/12
3
Aeroflex Plainview
SWITCHING CHA.