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Analog Devices Inc. AD9200KST
- Part No.:
- AD9200KST
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-LQFP
- Datasheet:
-
AD9200KST.pdf
- Description:
- IC ADC 10BIT CMOS 20MSPS 48-LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:25,042
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Product details
Overview
AD9200KST from Analog Devices is a 10-bit, 20 MSPS CMOS analog-to-digital converter with on-chip sample-and-hold amplifier, internal adjustable voltage reference (1 V or 2 V), and built-in clamp function-specifically enabled in the AD9200KST variant. It operates from 2.7 V to 5.5 V, consumes 80 mW at 3 V, and delivers ±0.5 LSB DNL over 0°C to +70°C. Used in video digitization and IF undersampling up to 135 MHz.
For engineers reviewing the AD9200KST datasheet, AD9200KST pinout, AD9200KST application, or AD9200KST equivalent, key selection criteria include its 48-lead LQFP package, 3-cycle pipeline latency, out-of-range (OTR) flag, three-state digital outputs, and clamp-enabled DC restoration for AC-coupled video signals.
Technical Context
The AD9200KST implements a multistage differential pipeline architecture optimized for 20 MSPS throughput with guaranteed no-missing-codes performance. Its sample-and-hold supports both single-ended and differential input configurations, with configurable reference modes (1 V/2 V internal or external) selected via MODE and REFSENSE pin strapping.
Clamp functionality-exclusive to AD9200ARS and AD9200KST-is implemented via dedicated CLAMP and CLAMPIN pins, enabling DC restoration of video waveforms with ±20 mV clamp error and 2 µs clamp pulsewidth. The OTR output flags overflow conditions independently of MSB polarity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - defines quantization step size of ~1 mV at 1 V full-scale, enabling precise amplitude capture in imaging and comms systems. |
| Sampling Rate | 20 MSPS - supports Nyquist-limited baseband sampling up to 10 MHz or IF undersampling up to 135 MHz. |
| Differential Nonlinearity | ±0.5 LSB (typ) - ensures monotonic transfer function critical for distortion-sensitive video and instrumentation applications. |
| Power Dissipation | 80 mW at 3 V - enables low-power portable designs; drops to <4 mW in STBY mode for battery-aware systems. |
| Input Bandwidth | 300 MHz (–3 dB) - preserves high-frequency signal integrity for fast transients and wideband IF signals. |
| Clamp Error | ±20 mV - maintains DC level accuracy during video sync pulse clamping, directly supporting NTSC/PAL compliance. |
| SINAD @ 3.58 MHz | 54.5 dB (typ) - corresponds to ~9.1 effective bits, suitable for broadcast-quality video digitization. |
Pinout & Package
AD9200KST is housed in a 48-lead LQFP (ST-48) package with exposed thermal pad, rated for 0°C to +70°C operation. Pin assignments are identical to AD9200JST and differ from the 28-lead SSOP variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN | Analog Input | Single-ended or differential input node; accepts 0.5 V to 2.5 V span with switched-capacitor topology and 1 pF input capacitance. |
| CLAMP / CLAMPIN | DC Restoration Control | CLAMP enables internal switch; CLAMPIN sets target DC level (0.5–2.7 V) for video signal clamping-functionality exclusive to AD9200KST and AD9200ARS. |
| REFTS / REFBS | Reference Sense Inputs | Define top/bottom voltage boundaries of input range; decoupled externally via REFTF/REFBF for noise immunity. |
| VREF / REFSENSE | Internal Reference Control | VREF outputs 1 V or 2 V; REFSENSE tied to AVDD/AGND selects mode-enables flexible input scaling without external components. |
| OTR | Out-of-Range Indicator | Active-high flag signaling input overflow beyond REFTS/REFBS bounds; used with D9 to distinguish high/low saturation. |
| THREE-STATE / STBY | Digital Interface Control | THREE-STATE disables D0–D9/OTR outputs; STBY reduces power to <4 mW-both support system-level power management. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in clamp circuit | Enables DC restoration of AC-coupled video signals with ±20 mV accuracy and 2 µs pulsewidth-eliminates need for external clamping ICs in broadcast receivers. |
| Adjustable on-chip voltage reference | 1 V or 2 V output selectable via REFSENSE pin strapping-reduces BOM count and layout complexity versus external reference solutions. |
| IF undersampling capability | Supports input frequencies up to 135 MHz at 20 MSPS-allows direct digitization of intermediate frequencies without analog downconversion. |
| Low-power 3 V operation | 80 mW consumption at 3 V supply-meets portable medical and handheld test equipment power budgets while maintaining 54.5 dB SINAD. |
| Pin compatibility with AD876 | Same pinout as AD876 in LQFP package-enables drop-in upgrade path to lower supply voltage and improved dynamic performance. |
Applications
| Video Digitization | IF Sampling Receiver |
|---|---|
|
Use Scenario: Digitizing composite NTSC video signals after AC coupling and sync separation. IC Role / Device Role / Timing Role: ADC front-end capturing luminance/chrominance at 13.5 MHz pixel clock with DC restoration via CLAMP/CLAMPIN. Use Value: ±0.1° differential phase and ±0.05% differential gain meet broadcast video fidelity requirements without external clamping circuitry. |
Use Scenario: Direct sampling of 70 MHz IF output from RF mixer in SDR receiver. IC Role / Device Role / Timing Role: High-speed ADC acquiring undersampled IF waveform with 300 MHz input bandwidth and 20 MSPS timing resolution. Use Value: 54 dB SINAD at 10 MHz and –61 dBc SFDR enable clean demodulation of QPSK signals in narrowband channels. |
| Portable Ultrasound Imaging | Industrial Data Acquisition |
|
Use Scenario: Capturing echo return signals from piezoelectric transducers in handheld ultrasound probes. IC Role / Device Role / Timing Role: Low-power ADC converting analog beamformed RF returns with 20 MSPS rate and 10-bit resolution for real-time B-mode rendering. Use Value: 80 mW power draw at 3 V extends battery life; ±0.5 LSB DNL ensures accurate tissue contrast representation. |
Use Scenario: High-fidelity acquisition of sensor outputs (e.g., strain gauges, thermocouples) in programmable logic controller I/O modules. IC Role / Device Role / Timing Role: Precision ADC interfacing with op-amp signal conditioning chain, using internal 2 V reference for optimal SNR. Use Value: 57 dB SNR and ±0.75 LSB INL support 9+ ENOB for 16-bit-equivalent measurement accuracy in noisy industrial environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog-to-digital conversion applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9200JST | Identical electrical specs and pinout; rated for same 0°C to +70°C range but lacks clamp circuitry. | Not suitable for AC-coupled video requiring DC restoration; appropriate for IF sampling or general-purpose digitization where clamp is unused. | Select AD9200JST only if clamp functionality is unnecessary-reduces cost and simplifies reference configuration. |
| ADS5271IPFP | 12-bit, 40 MSPS, 1.8 V core supply; higher resolution and speed but requires external reference and separate analog/digital supplies. | Targets high-end medical imaging and radar; incompatible pinout and power architecture-requires PCB redesign. | Choose ADS5271IPFP when >10-bit resolution and >20 MSPS rate are mandatory; not a drop-in replacement for AD9200KST. |
Compared with AD9200JST, AD9200KST adds clamp functionality at no pinout or timing penalty-making it the sole choice for video DC restoration. Compared with ADS5271IPFP, AD9200KST offers simpler power sequencing, integrated reference, and lower system-level BOM cost despite lower bit depth.
Availability
AD9200KST is available at Aetrix Electronics and suitable for video digitization, IF undersampling receivers, and portable medical imaging requiring stable component supply across commercial temperature range.
Supply support for AD9200KST 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 AD9200 product line delivers low-power, high-speed ADCs optimized for video, communications, and instrumentation-designed to replace discrete ADC + reference + clamp solutions with monolithic integration.
FAQ
What is the operating temperature range for AD9200KST?
The AD9200KST is specified for 0°C to +70°C operation-the commercial temperature grade. This matches the ordering row "AD9200KSTRL 0°C to +70°C" and distinguishes it from industrial-grade variants like AD9200ARS (–40°C to +85°C). All electrical specifications in the datasheet's "REV. E" document apply within this range.
Does AD9200KST include the clamp function, and how is it enabled?
Yes, AD9200KST includes the built-in clamp circuit-explicitly confirmed in the datasheet: "Built-In Clamp Function (DC Restore)" and "Available only in AD9200ARS and AD9200KST." It is enabled by driving the CLAMP pin high and applying the desired DC restoration level to CLAMPIN (0.5 V–2.7 V), with ±20 mV error typical.
What package type and pin count does AD9200KST use?
AD9200KST uses a 48-lead LQFP package (ST-48 footprint), as confirmed in the Ordering Guide table and Pin Configurations section. It shares pinout with AD9200JST but differs from the 28-lead SSOP variants (e.g., AD9200JRS). The LQFP provides better thermal dissipation and routing flexibility for high-speed analog layouts.
How does the internal voltage reference work on AD9200KST?
AD9200KST features a programmable internal bandgap reference outputting either 1 V or 2 V, selected by strapping REFSENSE to VREF (1 V mode) or AGND (2 V mode). The VREF pin must be bypassed with 1.0 µF tantalum + 0.1 µF ceramic capacitors to AVSS. This eliminates need for external references in most video and IF applications.
Is AD9200KST pin-compatible with AD876, and what does that mean for design migration?
Yes, AD9200KST is pin-compatible with AD876 in the 48-lead LQFP package-as stated in "PRODUCT HIGHLIGHTS" and Table I. This allows legacy AD876-based designs to migrate directly to AD9200KST for lower supply voltage (2.7–5.5 V vs. 5 V only), reduced power (80 mW vs. >150 mW), and added clamp functionality-without PCB changes.
AD9200KST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 48-LQFP
- Packaging:
- Bag
- Product Status:
- Obsolete
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 20M
- Number of Inputs:
- -
- Input Type:
- -
- Data Interface:
- Parallel
- Configuration:
- -
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- -
- Reference Type:
- -
- Voltage - Supply, Analog:
- -
- Voltage - Supply, Digital:
- -
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 48-LQFP (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD9200KST FAQ
1.How can I place an order for AD9200KST through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9200KST 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 AD9200KST reliable?
The price and inventory of AD9200KST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9200KST is usually 5 days.
3.What payment methods are accepted for AD9200KST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9200KST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9200KST?
AD9200KST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9200KST 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 AD9200KST?
For technical support, including AD9200KST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9200KST requirements.
6.How does Aetrix verify that AD9200KST is sourced from the original manufacturer or authorized distributors?
All AD9200KST 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 AD9200KST meets industry standards.
7.What is the process for return or replacement of AD9200KST?
All AD9200KST units undergo pre-shipment inspection (PSI). If there is an issue with AD9200KST, 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 AD9200KST part is unused and in its original packaging.
Return procedure for AD9200KST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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