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Analog Devices Inc. AD9023AQ
- Part No.:
- AD9023AQ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-CDIP (0.600", 15.24mm)
- Datasheet:
-
AD9023AQ.pdf
- Description:
- 12-BIT ADC, PARALLEL WORD ACCESS
- Quantity:
- Payment:
- Shipping:
Inventory:106
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Product details
Overview
AD9023AQ from Analog Devices is a monolithic 12-bit, 20 MSPS analog-to-digital converter with on-chip track-and-hold (T/H), internal ±1.024 V reference, ECL-compatible digital I/O, and 110 MHz analog input bandwidth. It delivers 74 dB SFDR at 1.2 MHz input and 72 dB SFDR at 9.6 MHz, targeting undersampling applications such as direct IF digitization in radar and communications receivers.
For engineers reviewing the AD9023AQ datasheet, AD9023AQ pinout, AD9023AQ application, or AD9023AQ equivalent, key selection criteria include ECL logic compatibility, –25°C to +85°C industrial temperature rating, 20 ns transient response settling time, DNL < 0.75 LSB (typ), and ceramic DIP (Q-28) package suitability for high-dynamic-range signal acquisition systems.
Technical Context
The AD9023AQ implements a three-pass subranging architecture with digital error correction to achieve 12-bit accuracy at 20 MSPS while maintaining low power (1.5 W). Its internal T/H features 110 MHz bandwidth and is optimized for analog inputs above Nyquist-enabling direct IF sampling up to 70 MHz when paired with external Samplifier™ devices like the AD9100.
All timing is generated internally; conversion initiates on the rising edge of the ENCODE signal (Pin 8), with output data available after two pipeline delays plus propagation delay (tOD = 8.5–19.5 ns). The device requires dual supplies (+5 V and –5.2 V) and uses offset binary coding with ECL-compatible outputs referenced to –2.0 V across 100 Ω loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - defines quantization step size of ~499 µV over ±1.024 V full-scale range |
| Sampling Rate | 20 MSPS maximum - supports real-time digitization of IF signals up to ~10 MHz without aliasing under Nyquist criterion |
| Analog Bandwidth | 110 MHz - enables undersampling of RF/IF signals beyond first Nyquist zone (e.g., 9.6 MHz input) |
| SFDR | 74 dBc @ 1.2 MHz input - indicates spurious-free dynamic range sufficient for radar pulse detection and digital comms symbol recovery |
| DNL | 0.75 LSB typical - ensures monotonicity and absence of missing codes critical for precision measurement systems |
| Power Dissipation | 1.5 W - reflects trench-isolated bipolar process efficiency for high-speed ADCs operating at 20 MSPS |
| Input Impedance | 300 Ω - mandates low-impedance drive (e.g., AD96xx buffers) to minimize reflection and distortion |
| Aperture Jitter | 5 ps rms - limits SNR degradation at high input frequencies; requires low-jitter encode clock source |
Pinout & Package
AD9023AQ is supplied in a 28-pin ceramic dual-in-line package (Q-28), rated for –25°C to +85°C operation. The package features gullwing-compatible leads, hermetic sealing, and thermal impedance θJA = 35°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–3, 4, 18–25 (D1–D3, D0, D11–D4) | Digital output bits (ECL) | 12-bit parallel offset binary data bus; each output drives 100 Ω to –2.0 V; MSB = Pin 18, LSB = Pin 4 |
| 5, 8 (ENCODE) | Complementary encode clock input | Rising edge triggers T/H hold and conversion start; minimum pulse width 22.5 ns; jitter ≤5 ps rms required for optimal SFDR |
| 6 | No Connect | Must remain unconnected; no internal circuitry attached |
| 7, 9, 11, 16, 28 (GND) | Analog/digital ground reference | Multiple dedicated GND pins reduce ground bounce; all must connect to low-impedance analog ground plane |
| 10, 14, 26 (+VS) | +5 V power supply | Three separate +VS pins require individual 0.1 µF ceramic bypass capacitors to GND near each pin |
| 12 (AIN) | Analog input (noninverting) | ±1.024 V full-scale differential input; 300 Ω input resistance; 110 MHz bandwidth; must be driven from low-Z source |
| 13, 15, 27 (–VS) | –5.2 V power supply | Three dedicated –VS pins; COMP (Pin 17) must connect via 0.1 µF capacitor directly to Pin 15 (–VS) |
| 17 (COMP) | Internal T/H compensation node | Connects to –VS through 0.1 µF capacitor only; critical for T/H stability and dynamic performance |
Key Features
| Feature | Design Value |
|---|---|
| On-chip track-and-hold | 110 MHz bandwidth enables direct undersampling of IF signals up to 70 MHz when used with external Samplifier™ front-end |
| ECL-compatible I/O | Supports high-speed interfacing with ECL logic families; eliminates need for level-shifting circuitry in legacy radar/comms systems |
| Internal voltage reference | Stable ±1.024 V reference sets full-scale range; removes dependency on external precision references and associated layout complexity |
| Three-pass subranging + digital error correction | Guarantees 12-bit linearity (INL ≤2.5 LSB) and monotonicity without calibration, reducing system-level calibration overhead |
| Trench-isolated bipolar process | Enables high-speed operation with low thermal noise (0.57 LSB rms) and robustness against supply ripple (PSRR = 32 mV/V) |
| Industrial temperature grade | Specified from –25°C to +85°C (AD9023AQ/BQ), supporting deployment in base stations, test equipment, and avionics subsystems |
Applications
| Radar Receivers | Digital Communications |
|---|---|
Use Scenario: Digitizing pulsed IF signals from X-band radar front-ends operating at 9.6 MHz center frequency. IC Role / Device Role / Timing Role: High-speed ADC capturing radar return pulses with 72 dB SFDR to resolve weak targets amid strong clutter. Use Value: 20 ns transient response ensures accurate pulse shape capture; 110 MHz analog bandwidth supports wide instantaneous bandwidth processing. | Use Scenario: Sampling intermediate frequency outputs in microwave point-to-point radios using 16-QAM modulation. IC Role / Device Role / Timing Role: 12-bit digitizer converting analog IF to digital baseband for FPGA-based demodulation and channel equalization. Use Value: Offset binary ECL outputs interface directly with high-speed logic; 74 dB SFDR at 1.2 MHz preserves constellation integrity. |
| Medical Imaging | Digital Instrumentation |
Use Scenario: Acquiring ultrasound echo signals in portable imaging systems requiring compact, high-fidelity digitization. IC Role / Device Role / Timing Role: Precision ADC capturing time-of-flight echoes with low DNL (<0.75 LSB) to maintain spatial resolution. Use Value: On-chip T/H eliminates external sample-hold component count; ±1.024 V reference ensures consistent gain scaling across units. | Use Scenario: High-accuracy waveform digitization in automated test equipment measuring spectral purity of RF sources. IC Role / Device Role / Timing Role: Reference-grade ADC providing traceable 12-bit measurements with guaranteed no-missing-codes performance. Use Value: Thermal noise of 0.57 LSB rms supports >65 dB SNR; ceramic DIP package ensures long-term parameter stability in lab environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9022AQ | TTL-compatible digital I/O instead of ECL; otherwise identical pinout, specs, and architecture | Used where system logic is TTL-based; requires level translation if interfacing with ECL backplanes | Select AD9022AQ when interfacing with TTL/FPGA I/O banks; AD9023AQ remains preferred for legacy ECL systems. |
| AD9220AR | 12-bit, 10 MSPS, single +5 V supply, CMOS outputs; lower power (0.9 W), no on-chip T/H or reference | Targets cost-sensitive, lower-speed instrumentation; requires external T/H and reference design | Choose AD9220AR for new designs prioritizing power efficiency and single-supply simplicity; AD9023AQ retains advantage in ECL ecosystems and IF undersampling. |
Compared with AD9022AQ, AD9023AQ provides ECL timing compatibility essential for legacy radar hardware, while AD9220AR trades speed and integration for lower cost and power-making it suitable only where 10 MSPS and external support circuitry are acceptable.
Availability
AD9023AQ is available at Aetrix Electronics and suitable for radar receivers, digital communications infrastructure, and medical ultrasound systems requiring stable component supply across extended product lifecycles.
Supply support for AD9023AQ 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 leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The AD9023AQ belongs to Analog Devices' high-speed precision ADC product line, engineered specifically for demanding RF/IF digitization in defense, communications, and instrumentation where ECL timing, wide analog bandwidth, and guaranteed 12-bit linearity are mandatory.
FAQ
What is the operating temperature range specified for the AD9023AQ?
The AD9023AQ is specified for industrial temperature operation from –25°C to +85°C. This rating is confirmed in the Ordering Guide and Absolute Maximum Ratings table of the official AD9023 datasheet Rev. A. The "AQ" suffix explicitly denotes this temperature grade, distinguishing it from the extended-range "SQ" variant (–55°C to +125°C). Operation outside this range may result in parametric drift or functional failure.
Does the AD9023AQ include an internal voltage reference, and what is its value?
Yes, the AD9023AQ integrates an internal voltage reference that sets the full-scale analog input range to ±1.024 V. This is explicitly stated in the PRODUCT DESCRIPTION and ANALOG INPUT section of the datasheet. The reference is trimmed and temperature-compensated, eliminating the need for external reference components and ensuring consistent scaling across units and temperatures within the –25°C to +85°C range.
What package type is used for the AD9023AQ, and how many pins does it have?
The AD9023AQ is packaged in a 28-pin ceramic dual-in-line package (Ceramic DIP), designated Q-28 in the Ordering Guide. This hermetically sealed package is mechanically defined in the Outline Dimensions section, with lead pitch of 0.100 inches and overall body dimensions of 1.490 × 0.620 inches. The "AQ" suffix correlates exclusively with the Q-28 package per Analog Devices' ordering nomenclature.
Can the AD9023AQ be used with TTL logic, or is ECL mandatory?
ECL logic is mandatory for the AD9023AQ. Its digital inputs and outputs are strictly ECL-compatible, with logic "1" at –1.1 V and logic "0" at –1.5 V, as specified in the ELECTRICAL CHARACTERISTICS table. Interfacing with TTL logic would require level-shifting circuitry. For TTL compatibility, Analog Devices offers the pin-compatible AD9022AQ-identical in function but with TTL I/O thresholds.
What is the recommended power supply configuration for stable operation of the AD9023AQ?
The AD9023AQ requires two dedicated supplies: +VS = +5.0 V (±2.5%) and –VS = –5.2 V (±2.5%), with separate bypassing for each of the six supply pins (three +VS, three –VS). A 0.1 µF ceramic capacitor must connect Pin 17 (COMP) directly to Pin 15 (–VS), and all GND pins must tie to a low-impedance analog ground plane. Linear regulators are strongly recommended to avoid switching noise coupling into the analog path.
AD9023AQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- AD9023
- Package/Case:
- 28-CDIP (0.600", 15.24mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 20M
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 2:3
- Number of A/D Converters:
- 1
- Architecture:
- Flash
- Reference Type:
- Internal
- Voltage - Supply, Analog:
- -5.45V ~ -4.95V, 4.75V ~ 5.25V
- Voltage - Supply, Digital:
- -5.45V ~ -4.95V, 4.75V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -25°C ~ 85°C
- Supplier Device Package:
- 28-CDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
AD9023AQ FAQ
1.How can I place an order for AD9023AQ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9023AQ 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 AD9023AQ reliable?
The price and inventory of AD9023AQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9023AQ is usually 5 days.
3.What payment methods are accepted for AD9023AQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9023AQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9023AQ?
AD9023AQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9023AQ 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 AD9023AQ?
For technical support, including AD9023AQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9023AQ requirements.
6.How does Aetrix verify that AD9023AQ is sourced from the original manufacturer or authorized distributors?
All AD9023AQ 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 AD9023AQ meets industry standards.
7.What is the process for return or replacement of AD9023AQ?
All AD9023AQ units undergo pre-shipment inspection (PSI). If there is an issue with AD9023AQ, 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 AD9023AQ part is unused and in its original packaging.
Return procedure for AD9023AQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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