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Texas Instruments ADC12J2700NKE10
- Part No.:
- ADC12J2700NKE10
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- -
- Datasheet:
-
ADC12J2700NKE10.pdf
- Description:
- ADC, PROPRIETARY METHOD, 12-BIT
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Product details
Overview
ADC12J2700NKE10 from Texas Instruments is a 12-bit, 2.7 GSPS RF-sampling analog-to-digital converter with integrated digital down-converter (DDC), operating over –40°C to +85°C. It delivers –147.3 dBFS/Hz noise spectral density, 46 dB peak NPR, and 54.9 dBFS SNR at 350 MHz input in DDC-bypass mode. It targets direct RF sampling in microwave backhaul and radar systems requiring wide instantaneous bandwidth.
For engineers reviewing the ADC12J2700NKE10 datasheet, ADC12J2700NKE10 pinout, ADC12J2700NKE10 application, or ADC12J2700NKE10 equivalent, key selection criteria include JESD204B Subclass 1 lane count optimization, DDC decimation factor configuration (4–32), embedded signal range indication, 3.2 GHz full-power bandwidth, and thermal management for VQFN-68 package operation at 2.7 GSPS.
Technical Context
The ADC12J2700NKE10 implements a giga-sample interleaved pipeline architecture with on-chip DDC comprising NCOs, decimators, and complex baseband output formatting. Its DDC supports configurable decimation (4× to 32×) yielding 15-bit complex (30-bit total) outputs, while bypass mode delivers 12-bit offset-binary data at full 2.7 GSPS rate across up to 8 JESD204B lanes.
It uses dual-supply operation: 1.9 V for analog core (VA19) and 1.2 V for analog/digital domains (VA12/VD12), with dedicated VNEG supply for internal negative voltage generation. The device integrates temperature diode (TDIODE±), over-range detection (OR_T0/OR_T1), and low-latency signal range monitoring for real-time AGC control in SDR and radar front ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Sampling Rate | 2.7 GSPS - enables direct RF sampling up to 3.2 GHz FPBW without external mixing |
| DDC Output Format | 15-bit complex (I/Q) - reduces downstream processing load and interface bandwidth by 2× vs real data |
| Noise Spectral Density | –147.3 dBFS/Hz - determines minimum detectable signal level in 540 MHz usable bandwidth at 4× decimation |
| Peak NPR | 46 dB - validates linearity under multi-tone wideband conditions typical in DOCSIS and microwave backhaul |
| Full-Power Bandwidth | 3.2 GHz - supports high-frequency IF sampling (e.g., 2.14 GHz ±30 MHz) with <–64 dBc IMD3 |
| JESD204B Interface | Subclass 1, 1–5 lanes (DDC mode) or 8 lanes (bypass) - enables deterministic latency and lane alignment for FPGA synchronization |
| Power Consumption | 1.8 W at 2.7 GSPS bypass - defines thermal design requirements for VQFN-68 package with 2.7°C/W junction-to-case resistance |
Pinout & Package
The ADC12J2700NKE10 is housed in a 10.0 mm × 10.0 mm, 68-pin VQFN package with exposed thermal pad. Thermal pad must be soldered to PCB ground plane using multiple vias for electrical integrity and thermal dissipation (RθJCbot = 2.7°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN+, VIN– | Differential analog input | Accepts AC-coupled RF input up to 3.2 GHz; full-scale range set by register; requires 50 Ω termination |
| DEVCLK+, DEVCLK– | Differential sampling clock input | AC-coupled 2.7 GHz clock input; sampled on rising edge; 0.4–2 VPP amplitude required |
| SYSREF+, SYSREF– | JESD204B subclass 1 synchronization | Provides deterministic multi-device alignment; required for lane sync and initial calibration coordination |
| DS0+ to DS7+/NCO_2b | High-speed serialized data outputs | Configurable CML outputs supporting 1–8 lanes; require 100 Ω differential termination at receiver |
| RBIAS+, RBIAS– | Reference bias resistor connection | 3.3 kΩ ±0.1% external resistor sets internal reference for linearity-critical analog blocks |
| VNEG, VNEG_OUT | Negative supply generation | VNEG_OUT provides –1 V to +1 V regulated output; VNEG pins must be low-impedance connected to VNEG_OUT |
Key Features
| Feature | Design Value |
|---|---|
| Integrated DDC with NCOs | Enables frequency-selective digitization of 540 MHz bandwidth at 4× decimation, reducing FPGA resource usage |
| Embedded signal range indicator | Provides real-time 3-bit output indicating input level relative to full scale-enables closed-loop AGC without host processor latency |
| Automatically optimized lane count | Reduces JESD204B lane count based on DDC decimation setting-lowers FPGA I/O count and PCB routing complexity |
| Bypass mode with full Nyquist output | Delivers raw 12-bit data at 2.7 GSPS across 8 lanes-supports applications requiring maximum instantaneous bandwidth |
| Low power consumption | 1.8 W at 2.7 GSPS bypass enables air-cooled designs in dense RF modules without forced convection |
Applications
| Wireless Infrastructure | RF-Sampling SDR |
|---|---|
Use Scenario: Direct RF sampling of 3GPP LTE-A carrier aggregation bands up to 3.5 GHz in macro base stations. IC Role / Device Role / Timing Role: ADC12J2700NKE10 serves as the front-end digitizer, replacing mixer + IF ADC stages with single-chip RF sampling and digital tuning. Use Value: Eliminates image-reject filters and local oscillator synthesis, reducing BOM cost and board area while enabling flexible multi-band support via DDC reconfiguration. | Use Scenario: Wideband spectrum monitoring across 100 MHz–3 GHz in SIGINT receivers with real-time channelization. IC Role / Device Role / Timing Role: ADC12J2700NKE10 captures instantaneous bandwidth and feeds complex baseband data to FPGA-based FFT and demodulation engines. Use Value: 540 MHz usable bandwidth at 4× decimation allows simultaneous capture of 12× 40-MHz LTE carriers, accelerating threat identification latency. |
| Military Communications | RADAR/LIDAR |
Use Scenario: High-dynamic-range digitization of encrypted wideband waveforms (e.g., MIL-STD-188-110D) in tactical radios. IC Role / Device Role / Timing Role: ADC12J2700NKE10 operates in DDC bypass mode to preserve full 2.7 GSPS sample rate for pulse compression and matched filtering. Use Value: –64 dBc IMD3 at 2140 MHz ±30 MHz ensures fidelity of wideband modulated signals under high input power conditions. | Use Scenario: FMCW radar digitization of 77–81 GHz IF signals down-converted to 2–4 GHz band in automotive ADAS sensors. IC Role / Device Role / Timing Role: ADC12J2700NKE10 samples IF output from mixer with 3.2 GHz FPBW, feeding time-domain chirp analysis in real time. Use Value: 46 dB peak NPR enables accurate detection of weak return signals amid strong clutter, improving object resolution at long range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RF-sampling ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADC12J1600NKE | 1.6 GSPS max sampling rate; –145 dBFS/Hz NSD; 320 MHz usable bandwidth at 4× decimation | Lower power (1.6 W) and reduced bandwidth suit cost-sensitive 5G small cells and portable test equipment | Select when system Nyquist bandwidth ≤ 800 MHz and power budget < 1.7 W |
| HMCAD1511-EBZ | Analog Devices 12-bit, 1.5 GSPS ADC with 2.5 GHz FPBW; JESD204B Subclass 0; no integrated DDC | Requires external FPGA-based DDC logic; better suited for custom waveform generation where deterministic latency is less critical | Select when DDC flexibility outweighs power/area benefits of integrated solution |
Compared with ADC12J1600NKE and HMCAD1511-EBZ, the ADC12J2700NKE10 uniquely combines 2.7 GSPS sampling, on-chip DDC, and 3.2 GHz FPBW-making it optimal for next-generation microwave backhaul and wideband electronic warfare systems where bandwidth, integration, and deterministic latency are co-constrained.
Availability
ADC12J2700NKE10 is available at Aetrix Electronics and suitable for wireless infrastructure, military communications, and radar systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADC12J2700NKE10 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
Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in high-speed data converters and RF signal chain solutions.
The ADC12Jxx00 product line was designed for direct RF sampling in software-defined radio, radar, and broadband communications-emphasizing integration of DDC, JESD204B interface, and thermal efficiency in compact VQFN packaging.
FAQ
What is the maximum input frequency supported by the ADC12J2700NKE10?
The ADC12J2700NKE10 has a full-power bandwidth (FPBW) of 3.2 GHz, meaning it maintains specified dynamic performance (e.g., SNR, SFDR) for input frequencies up to 3.2 GHz. This enables direct sampling of L/S/C-band RF signals without downconversion. Performance validation at 3 GHz is explicitly documented in the datasheet, confirming usability beyond 2.7 GHz Nyquist limit due to undersampling capability.
Does the ADC12J2700NKE10 require external decimation filtering before the JESD204B interface?
No. The ADC12J2700NKE10 integrates a fully configurable digital down-converter (DDC) with programmable NCOs and decimation filters (4× to 32×). All decimation and complex baseband formatting occur internally; the JESD204B interface outputs ready-to-process 15-bit I/Q data. External filtering is unnecessary unless specific anti-aliasing is needed prior to analog input.
What power supply sequencing is required for reliable startup of the ADC12J2700NKE10?
The ADC12J2700NKE10 requires the 1.9 V (VA19) supply to be ≥1.2 V before applying 1.2 V supplies (VA12/VD12). Violating this sequence risks latch-up or parametric degradation. All supplies must be ramped monotonically with <100 ms rise time. The VNEG supply must be established after VA19 and before VA12/VD12, as VNEG_OUT is derived from VA19.
How many JESD204B lanes does the ADC12J2700NKE10 use in 4× decimation mode?
In 4× decimation mode, the ADC12J2700NKE10 automatically configures its JESD204B Subclass 1 interface to use 3 lanes at 10.8 Gbps per lane (2.7 GSPS × 30 bits ÷ 4 ÷ 3), delivering 15-bit complex output. Lane count is dynamically optimized-no manual lane assignment is required. Bypass mode increases lane count to 8 for full-rate 12-bit data.
Can the ADC12J2700NKE10 operate without the external RBIAS resistor?
No. The ADC12J2700NKE10 requires a 3.3 kΩ ±0.1% resistor between RBIAS+ and RBIAS– pins. This resistor sets the reference for internal bias networks affecting INL and DNL. Omitting or mis-sizing this resistor degrades linearity beyond datasheet specifications-typical INL shifts from ±2 LSB to >±5 LSB. TI explicitly states these pins "must be isolated from all other signals and grounds" to maintain precision.
ADC12J2700NKE10 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- -
- Sampling Rate (Per Second):
- -
- Number of Inputs:
- -
- Input Type:
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- Data Interface:
- -
- Configuration:
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- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- -
- Architecture:
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- Reference Type:
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- Voltage - Supply, Analog:
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- Voltage - Supply, Digital:
- -
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ADC12J2700NKE10 FAQ
1.How can I place an order for ADC12J2700NKE10 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC12J2700NKE10 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 ADC12J2700NKE10 reliable?
The price and inventory of ADC12J2700NKE10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC12J2700NKE10 is usually 5 days.
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ADC12J2700NKE10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC12J2700NKE10 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 ADC12J2700NKE10?
For technical support, including ADC12J2700NKE10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC12J2700NKE10 requirements.
6.How does Aetrix verify that ADC12J2700NKE10 is sourced from the original manufacturer or authorized distributors?
All ADC12J2700NKE10 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 ADC12J2700NKE10 meets industry standards.
7.What is the process for return or replacement of ADC12J2700NKE10?
All ADC12J2700NKE10 units undergo pre-shipment inspection (PSI). If there is an issue with ADC12J2700NKE10, 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 ADC12J2700NKE10 part is unused and in its original packaging.
Return procedure for ADC12J2700NKE10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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