Signal Chain Datasheets

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Signal Chain Datasheets — e2v HiRel Semiconductor

Teledyne HiRel Electronics supplies legacy components from a finite die bank.
For the most current data, visit the Standard Microcircuit Cross-Reference on the official DLA .mil site.
Please contact us or a Teledyne HiRel Electronics authorized distributor to verify a component's current status.

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Features

Logic ICs, PLDs, and PROMs for digital control, programmable logic, and non-volatile memory in defense system designs
Operational amplifiers for analog amplification, filtering, integration, and signal conditioning in defense and industrial systems
Comparators for threshold detection, zero-crossing detection, and analog-to-digital interface applications
Voltage regulators providing precision reference and regulated supply voltages in power conditioning applications
Multi-vibrators for clock generation, timing, and pulse generation functions in analog and mixed-signal circuits
Wafer bank inventory ensuring supply continuity for legacy signal chain and logic devices beyond commercial end-of-life

Benefits

QML qualification provides confidence in signal chain IC performance over the full temperature range and service lifetime
Wafer bank supply continuity protects programs from supply disruption when commercial signal chain manufacturers exit hi-rel markets
QML qualification provides the process documentation and traceability defense programs require
Custom SCD screening allows programs to balance qualification rigor with cost and schedule constraints
Single-source availability of logic, op-amp, comparator, regulator, and multi-vibrator types reduces supplier count
Platform extension services provide supply paths for legacy signal chain devices beyond commercial end-of-life

Applications

Defense avionics and guidance system analog sensor interface, logic control, and signal processing chains
Radar and electronic warfare analog front-end signal chain amplification and conditioning
Military platform digital logic, programmable logic, and PROM-based control and configuration systems
Launch vehicle and missile guidance analog control loop compensation and logic control circuits
Military platform instrumentation and measurement systems requiring qualified analog signal chain ICs
High-reliability industrial and nuclear control systems requiring precision analog and logic signal chain components

Specifications

Signal chain IC types: Logic ICs, op-amps, comparators, voltage regulators, multi-vibrators, PLDs, PROMs
Qualification levels: MIL-PRF-38535 Class B/Q, MIL-STD-883 Class B; custom SCD available
Supply model: Standard catalog and wafer bank inventory; platform extension sourcing
Packaging: Hermetic ceramic; plastic encapsulated; bare die formats available
Platform extension: Die repackaging, interposer fabrication, and IC resurrection for legacy devices
Certifications: AS9100C, ISO 9001:2015, ITAR Registered, DOD DMEA Trusted Supplier

FAQ

What signal chain IC types does the Teledyne HiRel portfolio cover?

• Operational amplifiers, comparators, voltage regulators, and multi-vibrators.

• These cover fundamental analog building blocks for space and defense sensor interface, signal conditioning, power management, and timing applications.

• Contact Teledyne HiRel for availability and qualification status of specific part numbers.

How does Teledyne HiRel ensure supply continuity for legacy signal chain ICs?

• Teledyne HiRel maintains a wafer bank of hard-to-find and obsolete signal chain ICs acquired from manufacturers exiting the hi-rel market.

• The platform extension model commits to continued availability of key military signal chain parts beyond commercial end-of-life.

• Platform extension services including die repackaging and IC resurrection extend supply paths beyond wafer bank inventory.

What radiation tolerance data is available for signal chain ICs?

• TID test data is available for applicable space-grade signal chain products and supports radiation assurance documentation.

• Custom radiation test steps can be incorporated into SCD-based qualification flows.

What qualification standards apply to Teledyne HiRel signal chain ICs?

• MIL-PRF-38535 Class B, Q, and V and MIL-STD-883 qualification available.

• Space COTS for commercial space constellation programs.

• Custom SCD flows to tailor screening to specific reliability and cost objectives.

What is the significance of op-amp input offset voltage in space applications?

• Input offset voltage is the differential input voltage required to produce zero output; it represents DC error in the amplifier.

• In precision instrumentation and sensor interfaces, input offset voltage contributes directly to measurement error.

• Radiation exposure can shift input offset voltage over mission lifetime; TID characterization documents this for space-grade devices.

What is a multi-vibrator and how is it used in space and defense systems?

• A multi-vibrator is an oscillator circuit producing a periodic output waveform, including astable (free-running), monostable (one-shot), and bistable configurations.

• In space and defense applications, multi-vibrators provide clock generation, timing, pulse stretching, and frequency division functions.

• High-reliability multi-vibrators maintain timing accuracy over wide temperature ranges and under radiation exposure.

What packaging options are available for signal chain ICs?

• Hermetic ceramic for space and high-reliability defense applications.

• Plastic encapsulated for commercial space and cost-sensitive applications.

• Bare die formats for hybrid and multi-chip module integration.

How does radiation affect op-amp and comparator performance?

• TID can shift input offset voltage, increase bias current, reduce open-loop gain, and increase supply current in bipolar op-amps.

• CMOS op-amps are more susceptible to threshold voltage shifts and increased leakage from TID than bipolar designs.

• Comparators can experience shifts in threshold voltage and increased propagation delay; TID data documents these effects for space-grade devices.

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Signal Chain IC Technology Overview for Space and Defense

Analog signal chain ICs form the interface between physical sensors, power supplies, and digital processing subsystems of space and defense electronics. Op-amps amplify and condition sensor signals. Comparators detect threshold crossings and trigger digital actions. Voltage regulators provide precision reference voltages. Multi-vibrators generate clock and timing signals.

Operational Amplifier Key Specifications

• Input offset voltage (uV or mV): DC error voltage; lower is better for precision applications

• Input bias current (pA or nA): current into input terminals; important for high-impedance sensor interfaces

• Gain-bandwidth product (MHz): determines usable bandwidth at a given closed-loop gain

• Slew rate (V/us): maximum rate of output voltage change; determines large-signal bandwidth

• CMRR (dB): common-mode rejection ratio; ability to reject power supply noise and interference

• Supply voltage range (V): must encompass the available supply in the target application

Voltage Regulator Selection for Space Power Subsystems

Voltage regulators in space must provide stable output over wide input voltage variation, wide temperature range, and full mission lifetime TID. Key parameters include input voltage range, output voltage accuracy, load regulation, line regulation, quiescent current, and radiation tolerance. TID can shift output voltage and increase quiescent current; TID data for space-grade regulators documents this behavior.

Signal Chain ICs and the Platform Extension Challenge

Many legacy defense platforms were designed with signal chain ICs from manufacturers who have since exited the hi-rel market. Teledyne HiRel's wafer bank preserves inventory of these devices and platform extension services provide paths to continue supply when wafer inventory is insufficient.