ADC12J4000NKE10 - 12-Bit 4 GSPS RF-Sampling ADC | Texas Instruments
料号： ADC12J4000NKE10 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $245 | $245.00 |
| 10 | $226.5 | $2,265.00 |
| 100 | $208 | $20,800.00 |
| 500 | $187 | $93,500.00 |
| 1,000 | $165.5 | $165,500.00 |
ADC12J4000NKE10 概述
An RF-sampling ADC is a high-speed converter designed to directly digitize wideband radio-frequency analog signals at the carrier or intermediate frequency, eliminating the need for traditional analog mixer-based downconversion stages. The ADC12J4000 belongs to the hierarchy of analog-to-digital converters -> data converters -> signal chain ICs -> semiconductor devices, and supports direct RF digitization where IF or RF signals are sampled at GHz rates without an analog mixer.
Key features include a 12-bit resolution with 4.0 GSPS minimum sample rate, 3.2 GHz input bandwidth, integrated 64-tap DDC block with complex decimation ratios, 8 configurable JESD204B serial-output lanes up to 8 Gbps, a 1.2/1.3/1.8V core supply with 2.5V analog supply, and an LVDS-compatible clock input. The folding-interpolating architecture provides very low latency and deterministic aperture delay suitable for radar and instrumentation systems.
The ADC12J4000 uses a differential bipolar front-end combined with on-chip dithering to maintain spurious-free dynamic range (SFDR) performance above 65 dBFS at high input frequencies. The integrated DDC includes a numerically controlled oscillator (NCO) and programmable decimation filters supporting divide ratios from 4 to 65536, reducing downstream FPGA fabric requirements by 10-100x in real-time spectral analysis.
Typical applications include wideband digital oscilloscopes, spectrum analyzers, electronic warfare (EW) receivers, radar pulse-Doppler processing, L-band and S-band direct-IF sampling, software-defined radio (SDR) platforms, and 5G massive-MIMO base-station digitizers. Designers typically pair the ADC with TI's LMK04828 clock conditioner and a Kintex/Virtex-class FPGA implementing JESD204B decoders.
When designing with the ADC12J4000, ensure the analog supply (VA) is decoupled with at least 10uF bulk and 0.1uF ceramic capacitors within 1 cm of the supply pins, and that differential analog inputs are transformer-coupled (e.g., TC1-1-13M+) with 100-ohm external terminations. The JESD204B link requires an 8B/10B-encoded subclass-1 deterministic-latency link with a SYSREF pulse aligned to the device clock.
直接替换替代料： ADC12J4000NKE10 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ADC12J4000NKE10 （相同外形与封装尺寸） ——差异在于 Architecture, Package, Resolution, Operating Temperature Range, RoHS Status.
快速对比工具——选择替代料号进行并排对比：
ADC12J4000NKE
✅ 直接替换📋 参考替代料（不在目录中）
ADC12J4000NKET
✅ 直接替换📋 参考替代料（不在目录中）
ADC12J2700NKE
✅ 直接替换📋 参考替代料（不在目录中）
ADC08D1500CIYB
✅ 直接替换✓ 有现货
$54 / 个
ADC081000CIYB
✅ 直接替换✓ 有现货
$26.8 / 个
查看数据手册 →ADC12J4000NKE10 最大额定值与电气特性
| 分辨率 | 12 bits |
| Sample Rate | Up to 4.0 GSPS (minimum) |
| Number of Input Channels | 1 differential input |
| Architecture | Folding-Interpolating with Integrated DDC |
| Input Bandwidth | 3.2 GHz |
| Integrated DDC | Yes (64-tap complex mixer/decimator) |
| Decimation Range | 4 to 65536 (programmable) |
| Digital Interface | JESD204B (8 configurable lanes, up to 8 Gbps) |
| Analog Supply Voltage (VA) | 2.5 V |
| Digital Supply Voltage (VD) | 1.2 V (core) / 1.3 V (optional) / 1.8 V (DRVDD) |
| Linearity Error (typical) | 0.0732 % |
| 工作温度范围 | -40 C to +85 C |
| 封装 | 68-VQFN (10x10 mm, HVQCCN) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
ADC12J4000NKE10 68-vqfn (10x10 mm, hvqccn) 引脚配置指南
ADC12J4000NKE10（68-vqfn (10x10 mm, hvqccn) 封装）的引脚配置。 该模拟元件具有输入、输出和电源引脚。请参阅制造商数据手册以了解失调调零、补偿和使能引脚配置。适用于信号调理和放大器电路。
暂无详细引脚数据： ADC12J4000NKE10.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ADC12J4000NKE10 适用于 6 应用s: Wideband Digital Oscilloscope, Spectrum Analyzer / Real-Time Spectrum Analyzer, Electronic Warfare Receiver, Radar Pulse-Doppler Processing, 5G Massive-MIMO Base Station Digitizer, Software Defined Radio (SDR).
Wideband Digital Oscilloscope
The ADC12J4000NKE10's 4.0 GSPS sample rate and 3.2 GHz analog input bandwidth enable direct RF sampling of oscilloscope input bandwidths up to 2 GHz without analog mixer pre-conditioning, simplifying the analog front end. The 12-bit vertical resolution provides 4096 quantization levels, suitable for 8-ENOB class oscilloscope designs targeting transient capture of high-speed serial and RF signals. The integrated DDC enables on-FPGA-real-time spectrum analysis viewing modes while still capturing time-domain waveforms in parallel.
推荐
Spectrum Analyzer / Real-Time Spectrum Analyzer
For real-time spectrum analyzer (RTSA) digitizers, the ADC12J4000NKE10's integrated 64-tap DDC with configurable decimation from 4x to 65536x enables continuous RF streaming with no gaps in capture, essential for detecting short-burst transient signals. The 12-bit dynamic range combined with 65 dBFS SFDR supports sub-1 Hz RBW analysis of modulated RF signals across L-band and S-band carrier frequencies. This dramatically reduces downstream FPGA fabric requirements by handling the heaviest filtering and decimation on-chip.
推荐
Electronic Warfare Receiver
Electronic warfare (EW) systems require instantaneous wideband capture of radar and communication threats in hostile bands; the ADC12J4000NKE10's 3.2 GHz input bandwidth covers typical C-band/S-band EW signal environments in a single converter. Its folding-interpolating architecture delivers deterministic aperture delay so channelization to multiple narrowband processors via the integrated DDC preserves phase coherence for direction-finding receivers. Low latency under 100 ns makes this ADC suitable for time-critical jamming and electronic protection tasks.
推荐
Radar Pulse-Doppler Processing
Radar pulse-Doppler receivers require wide instantaneous bandwidth for high range resolution combined with sample rates sufficient to capture the full pulse-Doppler envelope; the ADC12J4000NKE10's 4.0 GSPS enables direct sampling of X-band and Ku-band radar IFs. The ADC's deterministic latency and stable sample clock alignment support coherent integration across pulses, essential for Doppler bin processing. Its integrated DDC handles clutter rejection filtering, freeing FPGA resources for MTD (Moving Target Detection) algorithms.
推荐
5G Massive-MIMO Base Station Digitizer
5G massive-MIMO base stations require hundreds of direct-conversion RF channels sampled at GHz rates; the ADC12J4000NKE10's integrated DDC and JESD204B-compliant output enable multi-channel tile designs where one ADC per antenna element feeds a shared FPGA processing fabric. The 12-bit resolution at GHz sample rates delivers the dynamic range needed for digital pre-distortion (DPD) and crest-factor reduction (CFR) on wideband OFDM signals. The 8-lane JESD204B output cleanly tiles onto a single Kintex UltraScale RFSoC-class device.
推荐
Software Defined Radio (SDR)
Software defined radio (SDR) platforms benefit from RF sampling at GHz rates to minimize analog downconversion stages; the ADC12J4000NKE10 covers typical tuners and direct-conversion transceivers from HF through S-band. The integrated DDC provides channelized IF extraction for software demodulation of cellular, WiFi, and satellite waveforms. Its 12-bit dynamic range approaches the performance of dedicated narrowband receivers while providing full-bandwidth visibility for cognitive radio research.
推荐
推荐产品汇总
工程参考数据： ADC12J4000NKE10 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ADC12J4000NKE | ADC12J4000NKET | ADC12J2700NKE | ADC08D1500CIYB | ADC081000CIYB |
|---|---|---|---|---|---|---|
| Package | 68-VQFN (10x10 mm) | 68-VQFN (10x10 mm) - same | 68-VQFN (10x10 mm) - same | 68-VQFN (10x10 mm) - same | QFP-EP (different VQFN) | QFP-EP (different VQFN) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 12 bits | 12 bits | 12 bits | 12 bits | 8 bits | 8 bits |
| Sample Rate | 4.0 GSPS | 4.0 GSPS | 4.0 GSPS | 2.7 GSPS | 1.5 GSPS (dual) | 1.0 GSPS |
| Input Bandwidth | 3.2 GHz | 3.2 GHz | 3.2 GHz | 2.7 GHz | 1.7 GHz | 1.2 GHz |
| Integrated DDC | Yes (64-tap) | Yes (64-tap) | Yes (64-tap) | Yes (64-tap) | No | No |
| Digital Interface | JESD204B (8 lanes) | JESD204B (8 lanes) | JESD204B (8 lanes) | JESD204B (8 lanes) | LVDS parallel | LVDS parallel |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Approx. Unit Price (qty 1) | $245.00 | $245.00 | $245.00 | $190.00 | $45.00 | $28.00 |
关键差异点
- Highest sample rate in TI's 12-bit RF-sampling portfolio （对比 ADC12J2700NKE)
- 12-bit resolution vs 8-bit competitors （对比 ADC08D1500CIYB)
- Integrated 64-tap DDC reduces FPGA fabric load （对比 ADC081000CIYB)
设计说明
The ADC12J4000 requires five separate power rails: VA 2.5V (analog supply), VD 1.2V (digital core), DRVDD 1.8V (JESD204B output driver), and optional VCM 1.2V (common-mode reference). Each rail should have 10 uF bulk and 0.1 uF ceramic decoupling within 1 cm of the supply pin, plus a ferrite bead isolating analog from digital domains. Power supply rejection can degrade SFDR by 10 dB or more if supplies are not properly isolated.
Differential analog inputs must be transformer-coupled (e.g., TC1-1-13M+) with 100-ohm external terminations to maintain 3.2 GHz input bandwidth. Match trace lengths of the differential pair within 0.5 mm to preserve common-mode rejection. Route the JESD204B output lanes as 100-ohm differential pairs on inner PCB layers with continuous reference plane - any impedance discontinuity above 5 ohm causes deterministic jitter that breaks link synchronization.
Estimated: at 4.0 GSPS continuous conversion, VA 2.5V supply, and VA current draw near 0.6 A, the device dissipates roughly 1.5 W which must be managed through the exposed thermal pad. Solder the VQFN thermal pad to a 100 mm x 100 mm copper pour on the top layer with thermal vias on a 1.2 mm pitch. Without this thermal management, junction temperature may exceed 110 C at 85 C ambient, triggering thermal shutdown.
JESD204B subclass 1 mode requires a SYSREF pulse aligned to the device clock (LMK04828 family provides this). Without proper SYSREF generation, link establishment fails and the FPGA receives no data. The ADC's internal DDC decimation filter must be configured BEFORE the link comes up - invalid decimation ratios (greater than 65536 or non-power-of-two entries) will lock the input FIFO but fail downstream data parsing.
合规信息
Industrial-grade -40C to +85C variant. Not AEC-Q100 qualified; for automotive ADAS consult TI automotive-grade ADC portfolio.
