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Analog Devices Inc. AD9020KE
- Part No.:
- AD9020KE
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 68-CLCC
- Datasheet:
-
AD9020KE.pdf
- Description:
- 10-BIT FLASH ADC, PARALLEL
- Quantity:
- Payment:
- Shipping:
Inventory:4,269
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Product details
Overview
AD9020KE from Analog Devices is a 10-bit, 60 MSPS monolithic flash analog-to-digital converter (ADC) with TTL-compatible outputs, ±1.75 V bipolar analog input range, 45 pF input capacitance, and 56 dB SNR at 2.3 MHz - deployed in digital oscilloscopes and radar warning systems requiring high-speed digitization of wideband signals.
For engineers reviewing the AD9020KE datasheet, AD9020KE pinout, AD9020KE application, or AD9020KE equivalent, this page delivers verified electrical specifications, package-validated pin functions, real-world timing behavior (aperture uncertainty: 5 ps rms), and alternative options for 10-bit/60 MSPS sampling in industrial and defense-grade signal acquisition.
Technical Context
The AD9020KE implements a modified flash architecture using 512 comparators - half the count of a conventional 10-bit flash - reducing input capacitance and improving linearity. Its internal resistor ladder (37 Ω nominal) is tapped at 1/4REF, 1/2REF, and 3/4REF to optimize integral linearity when driven at precise voltage ratios.
Conversion is triggered by the TTL-compatible ENCODE input; output data (D0–D9) and OVERFLOW are TTL-level, with configurable coding via MSB INVERT and LSBs INVERT pins. Aperture delay is 1 ns, aperture uncertainty is 5 ps rms, and output delay ranges from 6–13 ns - all production-tested at 25°C per MIL-STD-883-compliant test level VI.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - delivers 1024 discrete quantization levels for precision amplitude digitization. |
| Max Conversion Rate | 60 MSPS - supports real-time sampling of signals up to 175 MHz analog bandwidth without aliasing in baseband applications. |
| SNR @ 2.3 MHz | 49.5–56 dB - defines usable dynamic range for low-distortion digitization of medium-frequency waveforms. |
| Input Capacitance | 45 pF - enables stable interface with low-output-impedance drivers (e.g., AD9617) without excessive peaking or ringing. |
| Analog Input Range | ±1.75 V (at ±VSENSE) - sets full-scale differential input window compatible with standard op-amp output rails. |
| Power Dissipation | 2.8–3.3 W - requires thermal management in ceramic LCC (E-68A) package due to high current draw (+VS: 440–530 mA; –VS: 140–170 mA). |
| Aperture Uncertainty | 5 ps rms - limits jitter-induced noise floor degradation when sampling >10 MHz signals. |
Pinout & Package
AD9020KE is housed in a 68-terminal ceramic leadless chip carrier (LCC), designated E-68A per Analog Devices' ordering guide - optimized for low thermal impedance (θJC = 2.6°C/W) and high-reliability operation from 0°C to +70°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1/2REF (Pin 1) | Reference ladder midpoint | Provides access to 50% of reference voltage; driving at 0 V improves linearity and reduces offset error. |
| +VS (Pins 3,6,15,18,25,30,33,34,37,40,45,52,55,65,68) | Positive supply rail | Nominally +5 V ±5%; powers comparator array and output buffers; 15 pins minimize IR drop and ground bounce. |
| GROUND (Pins 4,5,13,17,27,31,32,36,38,39,43,53,66,67) | Common return path | All 14 ground pins must connect to low-impedance analog ground plane to suppress digital switching noise coupling. |
| ANALOG IN (Pins 8,9) | Differential analog input | Accepts ±1.75 V signal; 45 pF input capacitance and 2–7 kΩ resistance require careful driver selection and series termination. |
| ENCODE (Pin 14) | Sampling clock input | TTL-compatible trigger; rising edge latches comparators; 6 ns minimum pulse width required for reliable conversion. |
| D0–D9 (Pins 19–23,46–50) | Digital output data bus | 10-bit parallel TTL outputs; D0 (LSB) to D9 (MSB); output skew ≤5 ns ensures synchronous capture across all bits. |
| OVERFLOW (Pin 51) | Overrange indicator | Active-high TTL signal indicating ANALOG IN > +VSENSE; not production-tested for accuracy or delay. |
| MSB INVERT (Pin 61) | Data format control | DC logic input: grounded for standard binary/2's complement; tied to +VS to invert D9 for offset binary variants. |
Key Features
| Feature | Design Value |
|---|---|
| 512-comparator flash architecture | Reduces input capacitance to 45 pF vs. 1024-comparator equivalents - enabling higher analog bandwidth (175 MHz) and lower driver loading. |
| Quarter-point reference taps (1/4REF, 1/2REF, 3/4REF) | Allow external trimming of resistor ladder voltages to correct integral nonlinearity - improving ENOB by up to 0.5 bits at low frequencies. |
| Voltage sense lines (±VSENSE) | Enable remote sensing of top/bottom ladder nodes to null offset errors caused by PCB trace resistance - critical for ±0.5 mV dc accuracy. |
| Configurable output coding | Four formats (binary, inverted binary, 2's complement, inverted 2's complement) selectable via two DC pins - simplifies interface to FPGA or DSP logic. |
| MIL-STD-883-compliant versions available | AD9020KE meets commercial temperature grade (0°C to +70°C); military variants (e.g., AD9020SE/883) support –55°C to +125°C operation with full characterization. |
Applications
| Digital Oscilloscopes | Radar Warning Systems |
|---|---|
|
Use Scenario: Real-time waveform capture of fast transient signals up to 100 MHz bandwidth in benchtop and portable scopes. IC Role / Device Role / Timing Role: Primary digitizer sampling analog front-end at 60 MSPS; aperture uncertainty (5 ps rms) preserves time-domain fidelity. Use Value: 56 dB SNR at 2.3 MHz and 7.9-bit ENOB enable accurate amplitude measurement of low-level signals amid high-frequency noise. |
Use Scenario: Pulse-Doppler radar receiver digitizing IF signals in electronic warfare platforms operating under EMI-heavy environments. IC Role / Device Role / Timing Role: High-speed ADC capturing burst-mode radar returns; TTL outputs interface directly to FPGA-based pulse processing logic. Use Value: 175 MHz analog bandwidth and 60 MSPS rate support direct IF sampling of X-band radar signals without downconversion. |
| Medical Imaging (Ultrasound) | Professional Video Digitization |
|
Use Scenario: Beamforming subsystem in ultrasound machines digitizing echo return signals from phased-array transducers. IC Role / Device Role / Timing Role: Time-multiplexed ADC acquiring channel data from T/R switches; transient response <10 ns ensures clean capture after full-scale step transitions. Use Value: Low 45 pF input capacitance minimizes loading on high-Z transducer preamplifier outputs, preserving signal integrity. |
Use Scenario: Studio-grade video instrumentation digitizing composite NTSC/PAL or RGB component signals for frame analysis and color correction. IC Role / Device Role / Timing Role: Precision ADC converting analog video sync and luminance/chrominance components at pixel rates up to 60 MSPS. Use Value: Differential gain (1%) and phase (0.5°) specs meet SMPTE 170M broadcast standards for minimal color distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9020JE | Same die, 68-pin ceramic leaded (gull wing) package (Z-68); higher θJA (17°C/W vs. 15°C/W for LCC); identical electrical specs. | Better suited for prototyping with through-hole sockets; less optimal for high-density, thermally constrained PCBs. | Select AD9020JE if socket-based evaluation or manual rework is required; AD9020KE preferred for production LCC layouts. |
| AD9050KST | 10-bit, 60 MSPS, but uses pipelined architecture; lower power (1.8 W vs. 3.3 W); SNR 52 dB @ 2.3 MHz (vs. 56 dB); no overflow bit. | Targets battery-powered or thermally limited systems where moderate SNR suffices and latency tolerance allows pipeline delay. | Choose AD9020KE over AD9050KST when maximum SNR, flash-zero-latency response, and overflow indication are mandatory. |
Compared with AD9020JE, AD9020KE offers superior thermal performance in surface-mount LCC packaging; compared with AD9050KST, it delivers higher SNR and deterministic single-cycle latency at the cost of higher power and larger footprint - making AD9020KE optimal for mission-critical, high-fidelity digitization where jitter and linearity dominate design trade-offs.
Availability
AD9020KE is available at Aetrix Electronics and suitable for digital oscilloscopes, radar warning systems, and medical ultrasound equipment requiring stable component supply across extended production lifecycles.
Supply support for AD9020KE 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, with design centers worldwide and ISO 9001-certified manufacturing.
The AD9020 product line was engineered for high-speed, high-fidelity digitization in defense, test & measurement, and imaging systems - emphasizing low aperture jitter, wide analog bandwidth, and robust dc accuracy under thermal stress.
FAQ
What is the operating temperature range for the AD9020KE?
The AD9020KE is rated for commercial temperature operation from 0°C to +70°C, as confirmed in the Analog Devices ordering guide and electrical specifications table. This range applies to both dc accuracy and dynamic performance parameters, with full production testing performed at 25°C and sample testing at temperature extremes per test level VI.
Does the AD9020KE include an internal voltage reference?
No, the AD9020KE does not include an internal voltage reference. It requires externally supplied +VREF and –VREF (nominally ±1.75 V) applied across its internal resistor ladder, plus optional drive signals to 1/4REF, 1/2REF, and 3/4REF taps to optimize linearity - as specified in the "Voltage References" section of the AD9020 datasheet REV. C.
What package type is used for the AD9020KE?
The AD9020KE uses a 68-terminal ceramic leadless chip carrier (LCC), designated E-68A in Analog Devices' ordering guide. This surface-mount package features low thermal impedance (θJC = 2.6°C/W) and is distinct from the gull-wing Z-68 variant used in AD9020JZ/KE.
Can the AD9020KE be used with a single-ended analog input?
The AD9020KE accepts a differential analog input (ANALOG IN pins 8 and 9), but the functional block diagram and theory of operation confirm it operates with a bipolar input range centered at ground (±1.75 V). While not designed for true differential signaling, it can digitize single-ended signals referenced to ground - provided common-mode voltage remains near 0 V and input swing stays within ±1.75 V at ±VSENSE.
Is the OVERFLOW output of the AD9020KE production-tested for timing accuracy?
No, the OVERFLOW output timing and transition accuracy are explicitly excluded from production testing and datasheet limits, as stated in Note 3 and the "DYNAMIC PERFORMANCE" footnote: "Accuracy of the overflow comparator is not tested and not included in linearity specifications." Its use is recommended only for coarse overrange indication, not precision threshold detection.
AD9020KE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- AD9020
- Package/Case:
- 68-CLCC
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 60M
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- Parallel
- Configuration:
- ADC
- Ratio - S/H:ADC:
- 0:1
- Number of A/D Converters:
- 1
- Architecture:
- Flash
- Reference Type:
- External
- Voltage - Supply, Analog:
- ±4.75V ~ ±5.25V
- Voltage - Supply, Digital:
- ±4.75V ~ 5.25V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 68-CLCC (24.13x24.13)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD9020KE FAQ
1.How can I place an order for AD9020KE through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9020KE 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 AD9020KE reliable?
The price and inventory of AD9020KE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9020KE is usually 5 days.
3.What payment methods are accepted for AD9020KE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9020KE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9020KE?
AD9020KE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9020KE 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 AD9020KE?
For technical support, including AD9020KE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9020KE requirements.
6.How does Aetrix verify that AD9020KE is sourced from the original manufacturer or authorized distributors?
All AD9020KE 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 AD9020KE meets industry standards.
7.What is the process for return or replacement of AD9020KE?
All AD9020KE units undergo pre-shipment inspection (PSI). If there is an issue with AD9020KE, 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 AD9020KE part is unused and in its original packaging.
Return procedure for AD9020KE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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