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Data Converters

A/D Converters

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.

 

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.

 

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.

 

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.

 

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.

 

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.

 

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.

 

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.

 

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.

 

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.

 

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.

 

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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