RHD5958-7 [AEROFLEX]
RadHard-by-Design RHD5958 8-Channel Multiplexed 14-Bit Analog-to-Digital Converter;
| 型号： | RHD5958-7 |
| 厂家： | 
AEROFLEX CIRCUIT TECHNOLOGY |
| 描述： | RadHard-by-Design RHD5958 8-Channel Multiplexed 14-Bit Analog-to-Digital Converter 转换器 |
| 文件： | 总8页 (文件大小：470K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Datasheet
Standard Products
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:
- ELDRS Immune
- SEL Immune
> 1 Mrad(Si); Dose rate = 50 - 300 rads(Si)/s
> 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
Aeroflex Plainview
2
FIGURE 1: BLOCK DIAGRAM
SCD5958 Rev A 3/6/14
Aeroflex Plainview
3
ABSOLUTE MAXIMUM RATINGS
Parameter
Range
Units
Case Operating Temperature Range
Storage Temperature Range
Junction Temperature
-55 to +125
-65 to +150
+150
°C
°C
°C
Supply Voltage
VCC - GND
+6.0
V
V
VCC +0.4
GND -0.4
Input Voltage, PREF, NREF
Lead Temperature (soldering, 10 seconds)
300
3.5
°C
°C/W
V
Thermal Resistance, Junction to Case,jc
ESD Rating (per MIL-STD-883, Method 3015, Class 2)
2,000 - 3,999
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
+DvCC
DRVP
DRVN
PREF
NREF
Analog Power Supply Voltage
Digital Power Supply Voltage
5.0
5.0
V
V
V
V
V
V
Digital Output High Reference Level
Digital Output Low Reference Level
High Analog Reference Voltage
Low Analog Reference Voltage
3.3 to 5.0
0
4.5
0.5
ELECTRICAL PERFORMANCE CHARACTERISTICS
(TC = -55°C TO +125°C, +AVCC = +5.0V, +DVCC = +5.0V, +DRVP = +5.0V)
Parameter
Symbol
Conditions
VEN = DvCC, CLK = 0V
Min
Max
Units
Analog Supply Current Quiescent
Analog Supply Current Active
Analog Supply Current Sleep
Digital Supply Current Quiescent
Digital Supply Current Active
Digital Supply Current Sleep
Digital Output Supply Current Quiescent
Digital Output Supply Current Active
Digital Output Supply Current Sleep
Full-scale Input Range
AICCQ
AICCA
AICCS
DICCQ
DICCA
DICCS
IDRVPQ
IDRVPA
IDRVPS
VIN
-
10
mA
mA
mA
mA
mA
mA
mA
mA
mA
V
VEN = DvCC
-
10
VEN = DGND
-
4
VEN = DvCC, CLK = 0V
VEN = DvCC
-
1
-
2
VEN = DGND
-
1
0.1
1
VEN = DvCC, CL = 50pF, CLK = 0V
VEN = DvCC, CL = 50pF
VEN = DGND, CL = 50pF
-
-
-
VNREF
-
1
VPREF
50
6
Input Capacitance 2/
CIN
TC = +25°C
pF
Analog Reference Impedance
High Analog Reference Current
ZREF
PREF to NREF
PREF - NREF = 4V
DVRP = 5.0 V
2
KΩ
mA
IPREF
0.67
VNREF
2
5.0
High Analog Reference Voltage
Low Analog Reference Voltage
VPREF
VNREF
DVRP = 3.3 V
DVRP = 5.0 V
DVRP = 3.3 V
VNREF
5.0
V
0
0
VPREF
VPREF
SCD5958 Rev A 3/6/14
Aeroflex Plainview
4
ELECTRICAL PERFORMANCE CHARACTERISTICS
(TC = -55°C TO +125°C, +AVCC = +5.0V, +DVCC = +5.0V, +DRVP = +5.0V)
Parameter
Symbol
Conditions
PREF-NREF = 4.5V
Min
Max
Units
Integral Nonlinearity
Differential Nonlinearity
Offset Error
INL
DNL
OE
-
0.25
0.05
0.012
0.006
-
%FSR
%FSR
%FSR
%FSR
dB
PREF-NREF = 4.5V
PREF-NREF = 4.5V
PREF-NREF = 4.5V
TC = +25°C
-
-
-0.006
80
Gain Error
AE
Channel Isolation 2/
Clock Frequency
ISO
fC
PREF-NREF = 4.5V
-
1
MHz
fSAMPLE
(MAX)
Maximum Sampling Rate
fC = 1 MHZ, 20 clocks per conversion
-
50
kSPS
nA
+25°C
-5
-50
-5
5
50
5
High Input Leakage Current
(AIN00-AIN07) 3/
Input under test = AvCC,
VEN = DVCC
IINLK
HI
+125°C
+25°C
Low Input Leakage Current
(AIN00-AIN07) 3/
Input under test = AGND,
VEN = DVCC
IINLK
LO
+125°C
-50
3.0
50
-
Digital High Level Input Voltage
EN_H, STCNV_H, OE_H, CLK,
(AD00-AD02)
DVRP = 5.0 V
DVRP = 3.3 V
DVRP = 5.0 V
DVRP = 3.3 V
VIH
VIL
IIH
2.2
-
-
V
Digital Low Level Input Voltage
EN_H, STCNV_H, OE_H, CLK,
(AD00-AD02)
2.0
1.2
5
-
DVRP = 5.0 V
Digital input under test = 5.0 V
All other digital inputs = DGND
+25°C
+125°C
+25°C
-5
-50
-5
-50
Digital High Level Input Current
EN_H, STCNV_H, OE_H, CLK,
(AD00-AD02) 3/
50
5
nA
Digital Low Level Input Current
EN_H, STCNV_H, OE_H, CLK,
(AD00-AD02) 3/
DVRP = 5.0 V
IIL
All digital inputs = DGND
+125°C
50
DVRP = 5.0 V, VEN = DvCC, IOH = -1.0mA
DVRP = 5.0 V, VEN = DvCC, IOH = -4.0mA
DVRP = 3.3 V, VEN = DvCC, IOH = -1.0mA
DVRP = 3.3 V, VEN = DvCC, IOH = -4.0mA
DVRP = 5.0 V, VEN = DvCC, IOH = +1.0mA
DVRP = 5.0 V, VEN = DvCC, IOH = +4.0mA
DVRP = 3.3 V, VEN = DvCC, IOH = +1.0mA
DVRP = 3.3 V, VEN = DvCC, IOH = +4.0mA
DVRP = 5.0 V, VEN > 3.0 V
4.6
4.2
3.0
2.7
-
-
-
Digital High Level Output Voltage
(B00-B13)
VOH
VOL
-
-
V
0.4
0.6
0.4
0.6
-4.0
-4.0
4.0
4.0
5
Digital Low Level Output Voltage
(B00-B13)
-
-
Digital High Level Output Current
(B00-B13)
IOH
(SOURCE)
DVRP = 3.3 V, VEN > 2.2 V
mA
nA
DVRP = 5.0 V, VEN > 3.0 V
-
Digital Low Level Output Current
(B00-B13)
IOL
(SINK)
DVRP = 3.3 V, VEN > 2.2 V
-
+25°C
-5
-50
-5
-50
High Output Leakage Current
(B00-B13) 3/
IOUTLK
VOE = DGND
+125°C
HI
50
5
+25°C
Low Output Leakage Current
(B00-B13) 3/
IOUTLK
VOE = DGND
+125°C
LO
50
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
Aeroflex Plainview
5
Pin #
Signal
Definition
Pin #
Signal
Definition
1
2
AVCC
DVCC
AD02
AD01
AD00
CASE
STCNV_H
EN_H
OE_H
CLK
Analog Supply Voltage
Digital Supply Voltage
Multiplexer Address 02
Multiplexer Address 01
Multiplexer Address 00
Case Ground
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
B10
B11
Digital Output 10
Digital Output 11
3
B12
Digital Output 12
4
B13
Digital Output 13
5
EOC_H
BUSY_L
DRVN
DRVP
DGND
AGND
PREF
AIN07
AIN06
AIN05
AIN04
AIN03
AIN02
AIN01
AIN00
NREF
End of Convert
6
Busy
7
Start Conversion
Multiplexer Enable
Output Enable
Digital Output Low Reference Level
Digital Output High Reference Level
Digital Supply Return
8
9
10
11
12
13
14
15
16
17
18
19
20
Clock Input
Analog Supply Return
B00
Digital Output 00
Digital Output 01
Digital Output 02
Digital Output 03
Digital Output 04
Digital Output 05
Digital Output 06
Digital Output 07
Digital Output 08
Digital Output 09
High Analog Reference Voltage
Analog Multiplexer Input 07
Analog Multiplexer Input 06
Analog Multiplexer Input 05
Analog Multiplexer Input 04
Analog Multiplexer Input 03
Analog Multiplexer Input 02
Analog Multiplexer Input 01
Analog Multiplexer Input 00
Low Analog Reference Voltage
B01
B02
B03
B04
B05
B06
B07
B08
B09
FIGURE 2: PACKAGE PIN-OUT AND SIGNAL DEFINITION
TRUTH TABLE (AIN00 – AIN07)
AD02
AD01
AD00
EN_H
"ON" CHANNEL
X
L
X
L
X
L
L
NONE
AIN00
AIN01
AIN02
AIN03
AIN04
AIN05
AIN06
AIN07
H
H
H
H
H
H
H
H
L
L
H
L
L
H
H
L
L
H
L
H
H
H
H
L
H
L
H
H
H
FIGURE 3: TRUTH TABLE
SCD5958 Rev A 3/6/14
Aeroflex Plainview
6
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
Aeroflex Plainview
7
ORDERING INFORMATION
Model
DLA SMD #
Screening
Package
RHD5958-7
Commercial Flow, +25°C testing only
-
Military Temperature, -55°C to +125°C
Screened in accordance with the individual Test Methods
of MIL-STD-883 for Space Applications
RHD5958-S
-
40-lead
CQFP
RHD5958-201-1S
RHD5958-901-1S
In accordance with DLA SMD
5962-1221101KXC
5962H1221101KXC
DLA SMD and Radiation Certification Pending
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.)
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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.
Our passion for performance is defined by three
attributes represented by these three icons:
solution-minded, performance-driven and customer-focused
SCD5958 Rev A 3/6/14
8
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