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Analog Devices Inc. AD7576TQ/883B
- Part No.:
- AD7576TQ/883B
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 18-CDIP (0.300", 7.62mm)
- Datasheet:
-
AD7576TQ/883B.pdf
- Description:
- 8-BIT SAR ADC, PARALLEL ACCESS
- Quantity:
- Payment:
- Shipping:
Inventory:3,203
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Product details
Overview
AD7576TQ/883B from Analog Devices is a monolithic LC2MOS 8-bit successive-approximation analog-to-digital converter with 10 µs conversion time, µP-compatible parallel interface, and 18-pin CERDIP glass-seal package rated for −55°C to +125°C military temperature operation. It interfaces directly with 8-bit microprocessors and supports single-supply operation with on-chip reference.
For engineers reviewing the AD7576TQ/883B datasheet, AD7576TQ/883B pinout, AD7576TQ/883B application, or AD7576TQ/883B equivalent, key selection criteria include military-grade temperature range, 10 µs conversion speed, 8-bit resolution, µP-compatible parallel data bus timing, and CERDIP hermetic packaging for high-reliability systems.
Technical Context
The AD7576TQ/883B implements a successive-approximation register (SAR) architecture with internal track-and-hold and reference, requiring no external clock or timing components beyond standard µP control signals (RD, WR, CS). It operates from a single +5 V supply and includes an internal 2.5 V reference with ±0.5% initial accuracy.
Conversion is initiated by a WR pulse followed by RD readback; data appears on the 8-bit bidirectional data bus in byte-wide format. The device supports three operating modes-standby, conversion, and data hold-with power dissipation of 15 mW typical in active mode and 10 µW in standby.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit SAR architecture delivers 256 discrete output codes with monotonic transfer function. |
| Conversion Time | 10 µs maximum - enables sampling rates up to 100 kSPS in burst-mode µP systems. |
| Supply Voltage | +5 V ±5% - compatible with standard TTL/CMOS logic rails and eliminates dual-supply design complexity. |
| Reference | Internal 2.5 V bandgap reference (±0.5% initial accuracy) - removes need for external precision reference IC or resistor divider. |
| Temperature Range | −55°C to +125°C - qualified per MIL-STD-883 Class B for sustained operation in avionics, missile guidance, and space-qualified electronics. |
| Power Dissipation | 15 mW active / 10 µW standby - supports low-duty-cycle sensing in battery-backed or thermally constrained military platforms. |
Pinout & Package
AD7576TQ/883B is housed in an 18-pin hermetically sealed CERDIP (ceramic dual in-line package) with glass-to-metal seal, designed for long-term reliability under thermal cycling, humidity, and radiation exposure.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DB0–DB7 | Bidirectional data bus | 8-bit parallel I/O lines shared between µP write (conversion start) and read (data output) cycles. |
| CS | Chip select input | Active-low enable that gates WR and RD signals; allows multiple ADCs on same data bus. |
| WR | Write strobe input | Edge-triggered command initiating conversion upon falling edge while CS active. |
| RD | Read strobe input | Falling edge transfers converted result to DB0–DB7 after BUSY goes low. |
| BUSY | Open-collector status output | Active-high signal indicates conversion in progress; used for polling or interrupt-driven timing. |
| VREF | Reference voltage input/output | Internally connected to 2.5 V reference; can be overdriven or bypassed for external reference use. |
| AGND/DGND | Analog/digital ground pins | Separate ground returns minimize digital switching noise coupling into analog conversion path. |
Key Features
| Feature | Design Value |
|---|---|
| LC2MOS process technology | Enables low-power operation and high noise immunity in harsh EMI environments common in military platforms. |
| µP-compatible timing | Eliminates need for external timing logic or clock generators - integrates seamlessly with 8080/8085/Z80-style bus cycles. |
| On-chip track-and-hold | Supports accurate sampling of signals up to 50 kHz without external sample-hold circuitry. |
| Single +5 V supply | Reduces board-level power regulation complexity and improves system-level MTBF in field-deployed equipment. |
| MIL-STD-883B qualification | Validated for mechanical shock, vibration, temperature cycling, and burn-in - meets screening requirements for Class B military applications. |
Applications
| Avionics Sensor Interface | Missile Guidance Feedback |
|---|---|
Use Scenario: Monitoring analog outputs from inertial measurement units (IMUs), pressure transducers, and temperature sensors in flight control computers. IC Role / Device Role / Timing Role: Primary 8-bit ADC converting conditioned sensor voltages into µP-readable digital words with deterministic 10 µs latency. Use Value: Hermetic CERDIP package ensures stable performance across −55°C to +125°C ambient extremes encountered during high-altitude flight and re-entry. | Use Scenario: Digitizing gyroscope and accelerometer feedback signals in real-time guidance loop hardware. IC Role / Device Role / Timing Role: High-reliability ADC providing time-critical position and attitude updates to flight controller FPGA or microcontroller. Use Value: MIL-STD-883B qualification guarantees functional integrity under 20 g vibration and rapid thermal transients during launch and maneuvering. |
| Tactical Radio Front-End | Spacecraft Power Monitor |
Use Scenario: Converting RF detector outputs and bias voltage telemetry in SDR-based manpack radios operating in desert or arctic conditions. IC Role / Device Role / Timing Role: Low-power ADC supporting duty-cycled monitoring of PA temperature and supply rail health. Use Value: 10 µW standby power enables extended battery life during receive-only standby modes without compromising readiness. | Use Scenario: Measuring solar array current, battery voltage, and thermal sensor outputs in satellite power distribution units (PDUs). IC Role / Device Role / Timing Role: Radiation-tolerant ADC performing periodic housekeeping measurements in fault-tolerant onboard computers. Use Value: LC2MOS process provides inherent resistance to total ionizing dose (TID), supporting mission durations exceeding 5 years in LEO orbit. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit µP-compatible ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7575TQ/883B | 10-bit resolution, 25 µs conversion time, same CERDIP-18 package and MIL-STD-883B screening. | Higher resolution required for precision telemetry; slower throughput acceptable in non-real-time monitoring. | Select when >256 code granularity is needed and 10 µs latency is not critical. |
| MAX160BCJ/883B | 8-bit, 12 µs conversion, CMOS process, 20-pin CERDIP, different pinout and control protocol (no BUSY, uses EOC). | Legacy system redesign where footprint change is acceptable and EOC-based handshaking preferred over BUSY polling. | Choose only if existing layout accommodates 20-pin spacing and µP firmware supports EOC-driven readback. |
Compared with AD7576TQ/883B, AD7575TQ/883B trades speed for resolution while maintaining identical packaging and screening, whereas MAX160BCJ/883B requires PCB and firmware adaptation due to differing pin count, interface signaling, and timing behavior.
Availability
AD7576TQ/883B is available at Aetrix Electronics and suitable for avionics sensor interface, missile guidance feedback, and spacecraft power monitor applications requiring stable component supply across extended product lifecycles and obsolescence-sensitive programs.
Supply support for AD7576TQ/883B includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation and mission-critical systems.
The AD7576 series was developed specifically for military and aerospace applications demanding high reliability, wide temperature operation, and µP-compatible digital interfacing without external timing components.
FAQ
What is the full military specification compliance status of the AD7576TQ/883B?
The AD7576TQ/883B is fully qualified per MIL-STD-883B, including Method 1014 (temperature cycling), Method 2007 (vibration), Method 2015 (mechanical shock), and Method 1008 (burn-in). It meets Class B screening requirements for high-reliability military electronics and carries the full 883B suffix designation confirming compliance documentation and test records are available per purchase order.
Does the AD7576TQ/883B require an external clock source for conversion timing?
No, the AD7576TQ/883B does not require an external clock. Conversion timing is controlled entirely by the µP's WR and RD strobes - a falling edge on WR initiates conversion, and BUSY goes high until completion, after which RD reads the result. This eliminates clock generation circuitry and simplifies integration with legacy 8-bit microprocessor buses.
Can the internal reference of the AD7576TQ/883B be disabled or overdriven with an external reference?
Yes, the AD7576TQ/883B's VREF pin is bidirectional: it sources the internal 2.5 V reference by default, but accepts an external reference voltage (1.0 V to 5.0 V) when driven externally. Doing so disables the internal reference and scales full-scale input range proportionally - for example, a 4.096 V external reference yields 16 mV/LSB resolution.
What is the maximum recommended sampling rate achievable with the AD7576TQ/883B in continuous operation?
The AD7576TQ/883B achieves a maximum sustained sampling rate of 100 kSPS under ideal conditions - determined by its 10 µs conversion time plus minimum inter-conversion setup/hold overhead. In practice, µP bus turnaround and BUSY polling delay reduce this to ~70–85 kSPS depending on processor speed and interface implementation.
Is the AD7576TQ/883B pin-compatible with other members of the AD757x family such as the AD7575TQ/883B?
Yes, the AD7576TQ/883B is pin-compatible with the AD7575TQ/883B and AD7574TQ/883B in the same CERDIP-18 package. All share identical pin functions, electrical interface timing, and DC specifications - enabling direct substitution where resolution and conversion speed requirements align with the 8-bit/10 µs profile of the AD7576TQ/883B.
AD7576TQ/883B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- AD7576
- Package/Case:
- 18-CDIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- -
- Number of Inputs:
- 8
- Input Type:
- Single Ended
- Data Interface:
- -
- Configuration:
- ADC
- Ratio - S/H:ADC:
- 0:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 4.75V ~ 5.25V
- Voltage - Supply, Digital:
- 4.75V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -55°C ~ 125°C
- Supplier Device Package:
- 18-CERDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
AD7576TQ/883B FAQ
1.How can I place an order for AD7576TQ/883B through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7576TQ/883B on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AD7576TQ/883B reliable?
The price and inventory of AD7576TQ/883B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7576TQ/883B is usually 5 days.
3.What payment methods are accepted for AD7576TQ/883B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7576TQ/883B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7576TQ/883B?
AD7576TQ/883B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7576TQ/883B order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AD7576TQ/883B?
For technical support, including AD7576TQ/883B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7576TQ/883B requirements.
6.How does Aetrix verify that AD7576TQ/883B is sourced from the original manufacturer or authorized distributors?
All AD7576TQ/883B products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AD7576TQ/883B meets industry standards.
7.What is the process for return or replacement of AD7576TQ/883B?
All AD7576TQ/883B units undergo pre-shipment inspection (PSI). If there is an issue with AD7576TQ/883B, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AD7576TQ/883B part is unused and in its original packaging.
Return procedure for AD7576TQ/883B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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