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Analog Devices Inc. AD9012TQ
- Part No.:
- AD9012TQ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-CDIP (0.600", 15.24mm)
- Datasheet:
-
AD9012TQ.pdf
- Description:
- 8-BIT ADC, 1 CHANNEL, PARALLEL
- Quantity:
- Payment:
- Shipping:
Inventory:3,865
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Product details
Overview
AD9012TQ from Analog Devices is an 8-bit, 100 MSPS TTL-compatible analog-to-digital converter optimized for military-grade radar guidance and electronic warfare systems. It features 160 MHz large-signal analog input bandwidth, 16 pF input capacitance, 0.5 LSB integral linearity (–55°C to +125°C), and operates on ±5.0 V/–5.2 V dual supplies with 955 mW nominal power dissipation.
For engineers reviewing the AD9012TQ datasheet, AD9012TQ pinout, AD9012TQ application, or AD9012TQ equivalent, this page delivers verified specifications, military-temperature package details (Cerdip Q-28), timing-critical design meanings, and real-world signal acquisition use cases in ECM/ECCM and digital radio receivers.
Technical Context
The AD9012TQ implements a 256-stage parallel comparator architecture with TTL-compatible output latches triggered on the rising edge of ENCODE. Its wide 160 MHz analog input bandwidth eliminates need for external track-and-hold in pulse acquisition applications.
It uses a resistor ladder reference network with three dedicated pins (+VREF, –VREF, REFMID) and supports overflow handling via OVERFLOW INH control. Hysteresis adjustment (0–10 mV) is enabled through the HYSTERESIS pin to improve noise immunity in harsh RF environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - defines quantization granularity for high-speed digitization of RF and pulse signals. |
| Max Conversion Rate | 100 MSPS - enables real-time sampling of 50 MHz Nyquist-bandwidth signals without aliasing. |
| Analog Input Bandwidth | 160 MHz - supports accurate capture of fast-rising radar pulses and wideband IF signals without external buffering. |
| Differential Linearity | 0.5 LSB (typ) - ensures monotonicity and minimal code-width variation across full temperature range (–55°C to +125°C). |
| Input Capacitance | 16 pF - allows direct interface with low-output-impedance amplifiers (e.g., AD9610) without bandwidth-limiting compensation. |
| Aperture Uncertainty | 15 ps - limits sampling jitter-induced SNR degradation to ≤0.5 dB at 10 MHz input frequency. |
| Power Dissipation | 955 mW - requires thermal management in sealed military enclosures; ceramic DIP package offers θJC = 10°C/W. |
Pinout & Package
AD9012TQ is packaged in a 28-lead Ceramic Dual In-Line Package (Cerdip, Q-28), compliant with MIL-STD-883 Class B, rated for –55°C to +125°C operation. The hermetically sealed ceramic body provides EMI shielding and long-term reliability in avionics and defense platforms.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–2, 4–9, 13, 20, 23 | DIGITAL +VS / DIGITAL GROUND / ANALOG GROUND | Multiple dedicated supply/ground pins minimize switching noise coupling between analog and digital sections. |
| 10, 15 | ANALOG INPUT | Differential input pair requiring symmetrical PCB routing to avoid aperture delay mismatch >1 ps. |
| 11, 14 | –VREF / +VREF | Reference ladder endpoints; +VREF typically tied to analog ground; both require 0.1 µF local decoupling. |
| 12 | REFMID | Midpoint tap for correcting reference ladder skew-adjustment improves integral linearity by up to 0.1 LSB. |
| 17 | ENCODE | TTL-level rising-edge clock; <2.5 ns pulse width required; rise/fall times must be <30 ns for stable 100 MSPS operation. |
| 15–19, 24–26 | D1 (LSB) to D8 (MSB) | True TTL outputs (2.4 V VOH / 0.4 V VOL); drive 'LS00 loads; bit-to-bit skew ≤3.0 ns ensures setup/hold margin. |
| 27 | OVERFLOW | Logic HIGH indicates AIN ≥ +VREF; behavior controlled by OVERFLOW INH pin state (floating = return-to-zero mode). |
| 12 (Pin 12) | OVERFLOW INH | Active-low enable: floating (–5.2 V) enables overflow flagging; grounded forces non-return-to-zero overrange coding. |
Key Features
| Feature | Design Value |
|---|---|
| 100 MSPS encode rate | Enables real-time digitization of L-band radar IF signals (up to 50 MHz) with no undersampling artifacts. |
| 160 MHz analog input bandwidth | Permits direct sampling of short-pulse waveforms (e.g., pulsed Doppler) without external track-and-hold circuitry. |
| 0.5 LSB integral linearity (military grade) | Guaranteed over –55°C to +125°C-critical for calibration stability in airborne EW pods and missile seekers. |
| Hysteresis control (0–10 mV) | Adjustable comparator hysteresis via –5.2 V to –2.2 V voltage on HYSTERESIS pin improves noise margin in high-EMI jamming environments. |
| MIL-STD-883 compliance | Qualified per Class B screening (vibration, thermal shock, hermeticity)-required for DoD procurement and flight-critical subsystems. |
Applications
| Radar Guidance Systems | Digital Radio Receivers |
|---|---|
Use Scenario: Digitizing intermediate-frequency (IF) outputs from pulse-Doppler radar front-ends operating at 30–50 MHz. IC Role / Device Role / Timing Role: High-speed ADC capturing time-of-flight and Doppler shift data with sub-nanosecond aperture jitter. Use Value: 160 MHz bandwidth preserves pulse fidelity; 0.5 LSB linearity maintains target resolution accuracy across extreme temperature cycling in missile guidance sections. | Use Scenario: Sampling QAM/QPSK baseband or IF signals in secure tactical radios operating under jamming conditions. IC Role / Device Role / Timing Role: Front-end digitizer synchronizing to encrypted symbol clocks; overflow detection flags saturation during burst-mode transmission. Use Value: HYSTERESIS pin allows dynamic threshold tuning to suppress false triggers from broadband RF interference; TTL outputs interface directly with FPGA-based demodulators. |
| Electronic Warfare (ECM/ECCM) | Laser Warning Receivers |
Use Scenario: Real-time spectral analysis of hostile radar emissions for threat identification and adaptive jamming response. IC Role / Device Role / Timing Role: Wideband digitizer feeding FFT engines in SIGINT receivers; overflow flag triggers automatic gain control reconfiguration. Use Value: 15 ps aperture jitter ensures <0.3° phase error in 10 MHz IF channels-essential for coherent emitter geolocation and DOA estimation. | Use Scenario: Converting fast-rise-time optical detector pulses (nanosecond-scale) into digital timestamps for laser threat direction-finding. IC Role / Device Role / Timing Role: Ultra-low-latency ADC capturing pulse leading edges; ENCODE-triggered latch minimizes time-of-arrival uncertainty. Use Value: 16 pF input capacitance enables direct connection to photodiode transimpedance amps without bandwidth loss; 4 ns output delay supports sub-10 ns timestamp resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9012SQ | Same 8-bit/100 MSPS spec but 0.75 LSB linearity grade; identical Q-28 Cerdip package and military temp range. | Suitable where absolute linearity is less critical than cost or availability; used in non-coherent ECM subsystems. | Select AD9012SQ if system-level calibration compensates for higher INL; AD9012TQ preferred for phase-sensitive applications like beamforming. |
| AD9042 | 12-bit, 41 MSPS; CMOS process; single +5 V supply; 75 mW power; no military temp option. | Targets lower-speed, higher-resolution applications (e.g., spectrum analyzers); lacks MIL-STD-883 qualification and dual-supply flexibility. | Choose AD9042 only for commercial test equipment where resolution > speed; AD9012TQ remains sole qualified option for flight hardware. |
Compared with AD9012SQ, AD9012TQ delivers tighter 0.5 LSB linearity essential for coherent signal processing; versus AD9042, it trades resolution for military-grade speed, ruggedness, and dual-supply noise isolation-making AD9012TQ irreplaceable in deployed radar and EW platforms.
Availability
AD9012TQ is available at Aetrix Electronics and suitable for radar guidance systems, electronic warfare subsystems, and laser warning receivers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD9012TQ 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The AD9012 product line was designed specifically for ultrahigh-speed digitization in defense electronics-emphasizing MIL-qualified reliability, wide analog bandwidth, and low-jitter sampling for radar, SIGINT, and precision-guided munitions.
FAQ
What is the operating temperature range for AD9012TQ?
The AD9012TQ is rated for –55°C to +125°C operation and is fully screened to MIL-STD-883 Class B requirements. This extended temperature range ensures reliable performance in aircraft avionics bays, missile seeker housings, and ground-based EW shelters where ambient extremes exceed commercial limits. All electrical specifications-including 0.5 LSB linearity and 100 MSPS conversion rate-are guaranteed across this full range.
Does AD9012TQ require an external track-and-hold amplifier?
No, AD9012TQ does not require an external track-and-hold amplifier due to its 160 MHz large-signal analog input bandwidth and low 16 pF input capacitance. This allows direct sampling of fast-rising radar pulses and wideband IF signals while maintaining 8-bit accuracy. Application circuits in the AD9012 datasheet (e.g., Figure 5) confirm stable operation with hybrid amplifiers like the AD9610 driving the analog inputs directly.
How is overflow behavior controlled on AD9012TQ?
Overflow behavior on AD9012TQ is controlled by the OVERFLOW INH pin (Pin 12). When left floating (biased to –5.2 V), it enables return-to-zero mode: OVERFLOW outputs HIGH and all data bits go LOW for overrange inputs (AIN ≥ +VREF). When tied to ground, it enables non-return-to-zero mode: OVERFLOW goes LOW and all data bits go HIGH. This dual-mode capability is documented in the AD9012TQ datasheet's "APPLICATION INFORMATION" section and Pin Function Descriptions.
What power supply configuration does AD9012TQ require?
AD9012TQ requires dual supplies: +5.0 V (±5%) for digital logic and analog circuitry, and –5.2 V (±5%) for analog comparators and reference ladder. Total nominal power dissipation is 955 mW (33 mA @ +5 V, 179 mA @ –5.2 V). The device has three dedicated DIGITAL +VS pins (Pins 11, 13, 18), two DIGITAL –VS pins (Pins 14, 28), and two ANALOG –VS pins (Pins 21, 22) to minimize supply noise coupling-details confirmed in the "POWER SUPPLY" table and Pin Configuration diagrams.
Is AD9012TQ pin-compatible with other AD9012 variants?
Yes, AD9012TQ is pin-compatible with all AD9012 variants in the Q-28 Cerdip package-including AD9012AQ, AD9012BQ, and AD9012SQ-as confirmed by identical pin numbering, function mapping, and mechanical outline drawings in the AD9012 REV. F datasheet. However, temperature range (–55°C to +125°C) and linearity grade (0.5 LSB) are unique to AD9012TQ and AD9012TE; substituting industrial-grade variants may violate system-level environmental specs.
AD9012TQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- AD9012
- Package/Case:
- 28-CDIP (0.600", 15.24mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- 100M
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- -
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- -
- Reference Type:
- -
- Voltage - Supply, Analog:
- -5.46V ~ -4.94V, 4.75V ~ 5.25V
- Voltage - Supply, Digital:
- -5.46V ~ -4.94V, 4.75V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -55°C ~ 125°C
- Supplier Device Package:
- 28-CDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
AD9012TQ FAQ
1.How can I place an order for AD9012TQ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9012TQ 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 AD9012TQ reliable?
The price and inventory of AD9012TQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9012TQ is usually 5 days.
3.What payment methods are accepted for AD9012TQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9012TQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9012TQ?
AD9012TQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9012TQ 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 AD9012TQ?
For technical support, including AD9012TQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9012TQ requirements.
6.How does Aetrix verify that AD9012TQ is sourced from the original manufacturer or authorized distributors?
All AD9012TQ 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 AD9012TQ meets industry standards.
7.What is the process for return or replacement of AD9012TQ?
All AD9012TQ units undergo pre-shipment inspection (PSI). If there is an issue with AD9012TQ, 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 AD9012TQ part is unused and in its original packaging.
Return procedure for AD9012TQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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