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A/D Converters
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5102ALP |
A/D Converter, 16-bit, 20kHz, Latch-Up Protected
The 5102ALPRP is a 16-bit monolithic CMOS analog-to-digital
converter capable of 20 kHz throughput. On-chip self-calibration achieves nonlinearity
of ±0.001%
of FS and guarantees 16-bit no missing codes over the entire specified temperature
range. Offset and full scale errors are minimized during the calibration cycle,
eliminating the need for external trimming. The 5102ALPRP consists of a 2-channel
input multiplexer, DAC, conversion and calibration microcontroller, clock generator,
comparator, and serial communications port. The inherent sampling architecture
of the device eliminates the need for an external track and hold amplifier. The
converters’ 16-bit data is output in serial form with either binary or
2’s complement coding. Three output timing modes are available for easy
interfacing to microcontrollers and shift registers. Unipolar and bipolar input
ranges and digitally selectable. This device is latch-up protected by Maxwell
Technologies’ Latch-up Protection Technology (LPT™) technology.
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7672 |
A/D Converter, 12-bit, 5 µs
Conversion Time
The 7672 high-speed 12-bit analog-to-digital converter
microcircuit features a greater than 100 krad (Si) total dose tolerance, depending
upon space mission. The 7672 uses an accurate high-speed DAC and comparator to
achieve conversion time as low as 5 µs while dissipating only 110 mW of
power. The 7672 is designed to be used with an external reference voltage. This
allows the user to choose a reference whose performance suits the application
or to drive multiple 7672s from a single system reference, since the reference
input is buffered and draws very little current. For digital signal processing
applications where absolute accuracy and temperature coefficients may be unimportant,
a low cost reference can be used. For optimal precision, a high accuracy reference
where an absolute 12-bit accuracy can be obtained over a wide temperature range
may be used. Analog input range is pin-selectable for 0 to +5V, 0 to +10V, or ±5V,
making the ADC ideal for data acquisition and analog input/output cards. A high-speed
digital interface (125 ns data access time) with three state data outputs is
compatible with most microprocessors.
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7805ALP |
A/D Converter, 16-bit, Parallel, Latch-Up Protected
The 7805ALP high-speed analog-to-digital converter features
a greater than 50 krad (Si) total dose tolerance, depending upon space mission.
Using Maxwell’s radiation-hardened RAD-PAK® packaging technology, the
7805ALP incorporates the commercial ADS 7805 from Burr Brown. This device is
latch-up protected by Maxwell Technologies’ Latch-up
Protection Technology (LPT™) technology. The 7805ALP, 16-bit sampling A/D
using state-of-the-art CMOS structure. The device contains a complete 16-bit
capacitor-based SAR A/D with S/H, reference, clock, interface for microprocessor
use, and three state output drivers. The 7805ALP is specified at a 100 kHz sampling
rate, and guaranteed over the full temperature range. Laser-trimmed scaling resistors
provide an industry-standard ± 10V input range, while the innovative design
allows operation from a single 5V supply, with power dissipation of under 132
mW.
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7809LP |
A/D Converter, 16-bit, Serial, Latch-Up Protected
The 7809LP high-speed 16-bit analog to digital converter
features a greater than 100 kilorad (Si) total dose tolerance depending upon
space mission. Using Maxwell’s radiation-hardened RAD-PAK® packaging
technology, the 7809LP has the same footprint as ADS7809 and is latch-up protected
by Maxwell Technologies’ Latch-up
Protection Technology (LPT™). It is a 24 pin, 16-bit sampling analog-to-digital
converter using state-of-the-art CMOS structures. The 7809LP contains a 16-bit
capacitor based SAR A/D with S/H, reference, clock, interface for microprocessor
use, and serial output drivers. The 7809LP is specified at a 100kHz sampling
rate, and guaranteed over the full temperature range. Laser trimmed scaling resistors
provide various input ranges include ±10 V and 0 to 5 V, while the innovative
design allows operation from a single +5 V supply, with power dissipation of
under 132 mW.
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7820 |
A/D Converter, 8-bit, 1.36 µs Conversion Time
The 7820 is a microprocessor compatible 8-bit Analog-to-Digital Converter with a 0V to +5V input supply range with a single +5 Volt supply. The 7820 incorporates internal sample-and-hold circuitry which eliminates the need for an external S/H for signals with slew rates less than 100 mV/µs. The 7820 was designed to be easily interfaced with microprocessors, appearing as either a memory location or I/O port without the need for external interfacing. All outputs are latched and tri-state buffered.
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7872 |
A/D Converter, 14-bit, 10 µs Conversion Time
The 7872 high-speed 14-bit ADC microcircuit features
a greater than 100 krad (Si) total dose tolerance; depending upon orbit. The
7872 consists of a track/hold amplifier, successive-approximation ADC, 3V buried
Zener reference and versatile interface logic. It features a self-contained,
laser- trimmed internal clock, so no external clock timing components are required.
For minimum noise possible, the on-chip clock may be overridden to synchronize
the device operation to the digital system. The 7872 is a serial output device.
It is capable of interfacing to all modern microprocessors and digital signal
processors. The 7872 operates from ±5V power supplies, accepts bipolar
input signals of ±3V and is able to convert full power signals up to 41.5
kHz. It is also fully specified for dynamic performance parameters including
distortion and signal-to-noise ratio.
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9042 |
A/D Converter, 12-bit, 41 MSPS
The 9042RP 12-Bit monolithic analog-to-digital converter
microcircuit features a typical 100 kilorad (Si) total dose tolerance; dependent
upon orbit. Using Maxwell’s radiation-hardened RAD-PAK® packaging technology,
the 9042RP realizes a higher performance, and low power consumption. All necessary
functions, including track-and-hold (T/H) and reference are included on chip
to provide a complete conversion solution. The 9042RP runs off of a single +5V
supply and provides CMOS-compatible digital outputs at 41 MSPS. Designed specifically
to address the needs of wideband, multichannel receivers, the 9042RP maintains
80 dB spurious-free dynamic range (SFDR) over a bandwidth of 20 MHz. Noise performance
is also exceptional; typical signal to noise ratio is 68 dB. Capable of surviving
space environments, the 9042RP is ideal for satellite, spacecraft, and space
probe missions.
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9240LP |
A/D Converter, 14-bit, 10Mhz, Latch-Up Protected
The 9240LP is a 14-bit, analog-to-digital
converter that operates at a 10 MSPS rate. Manufactured with a high speed CMOS
process, this monolithic ADC contains an on-chip, high performance, low noise,
sample-and-hold amplifier and programmable voltage reference. The 9240LP offers
single supply operation and dissipates only 230mW with a 5 volt supply. This
device provides no missing codes and excellent temperature drift performance
over the full operating temperature range. The 9240LP utilizes Maxwell Technologies’ Latch-up
Protection Technology (LPT™) technology.
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D/A Converters
7545A |
D/A Converter, 12-bit, Multiplying
The 7545A is a 12-bit
CMOS-buffered multiplying DAC with internal
data latches, which features a greater than
100 krad (Si) total dose tolerance, depending
upon space mission. The 7545A features a WR
pulse width of 100 ns which allows interfacing
to a much wider range of fast 8-bit and 16-bit
microprocessors. It is loaded by a single 12-bit
wide word under the control of the CS and WR
inputs; tying these control inputs low makes
the input latches transparent allowing unbuffered
operation of the DAC. The 7545A is particularly
suitable for single supply operations and applications
with wide temperature variations.
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7846A |
D/A Converter, 16-bit
The 7846A 16-Bit DAC converter microcircuit
features a greater than 100 krad (Si) total dose tolerance, depending
upon space mission. The 7846A has VREF+ and VREF- reference inputs
and an on-chip output amplifier which gives the option of unipolar
or bipolar output. The 7846A uses a segmented architecture. The 4
MSBs in the DAC latch select one of the segments in a 16-resistor
string. Both taps of the segment are buffered by amplifiers and fed
to a 12-bit DAC, which provides a further 12 bits of resolution.
This architecture ensures 16-bit monotonicity. Excellent integral
linearity results from tight matching between the input offset voltages
of the two buffer amplifiers. In addition to the excellent accuracy
specifications, the 7846A also offers a comprehensive microprocessor
interface. There are 16 data I/O pins, plus control lines (CS, R/W,
LDAC and CLR). R/W and CS have readback function which allows writing
to and reading from the I/O latch.
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8143 |
D/A Converter, 12-bit, Serial
The 8143 is a 12-bit
serial-input daisy-chain CMOS digital-to-analog
converter (DAC) that features serial data input
and buffered serial data output and a greater
than 50 krad (Si) total dose tolerance, dependent
upon space mission. It was designed for multiple
serial DAC systems, where serially daisy-chaining
one DAC after another is greatly simplified.
The 8143 also minimizes address decoding lines
enabling simpler logic interfacing. It allows
three-wire interface for any number of DACs:
one data line, one CLK line and one load line.
Serial data in the input register (MSB first)
is sequentially clocked out to the SRO pin
as the new data word (MSB first) is simultaneously
clocked in from the SRI pin. The strobe inputs
are used to clock in/out data on the rising
or falling (user selected) strobe edges (STB1,
STB2, STB3, STB4). When the shift register’s
data has been updated, the new data word is
transferred to the DAC register with use of
LO1 and LD2 inputs.
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8408 |
D/A Converter, Quad 8-bit, Multiplying
The 8408 is a monolithic
quad 8-bit multiplying digital-to-analog CMOS
converter. Each DAC has its own reference input,
feedback resistor, and onboard data latches
that feature read/write capability. The readback
function serves as memory for those systems
requiring self-diagnostics. A common 8-bit
TTL/CMOS compatible input port is used to load
data into any of the four DAC data-latches.
Control lines DS1, DS2 and A/B determine which
DAC will accept data. Data loading is similar
to that of a RAMs write cycle. Data can be
read back onto the same bus with control line
R/W. The 8408 is a bus compatible with most
8-bit microprocessors, including the 6800,
8080, 8085, and Z80. The 8408 operates on a
single +5 volt supply and dissipates less than
20 mW. The 8408 is manufactured using highly
stable, thin-film resistors on an advanced
oxide-isolated, silicon-gate, CMOS process.
The improved latch-up resistant design eliminates
the need for external protective Schottky diodes.
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