LTC2207CUK-14 - 14-Bit, 105Msps ADC | Analog Devices
料号： LTC2207CUK-14 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $73.26 | $73.26 |
| 10 | $65.93 | $659.30 |
| 100 | $58.61 | $5,861.00 |
| 500 | $51.28 | $25,640.00 |
| 1,000 | $44 | $44,000.00 |
LTC2207CUK-14 概述
A pipelined ADC is a high-speed converter architecture that uses multiple cascaded low-resolution stages to achieve both high sample rates and high resolution. The LTC2200 family occupies the converter IC node in the signal chain hierarchy: analog front-end -> variable gain amplifier -> ADC -> digital signal processor -> FPGA/ASIC. Compared to successive-approximation-register (SAR) ADCs, pipelined parts deliver sample rates above 50 Msps at the cost of a fixed conversion latency, making them standard for software-defined radio, cable infrastructure, and radar digitizers.
Key features include a 105 Msps sample rate, 14-bit resolution, 77.3 dB SNR, 98 dB SFDR, and an internal bandgap reference. The PGA front end allows the input range to be optimized for either maximum dynamic range or maximum SNR, and the CMOS-compatible outputs can interface directly to FPGAs or ASICs without level translation. The exposed-pad QFN-48 package provides a low thermal resistance path to PCB copper, allowing continuous 105 Msps operation without additional heatsinking.
Typical applications include cellular base-station receivers, software-defined radio, cable modem termination systems, test and measurement instrumentation, and radar/sonar signal processing. The wide input bandwidth supports direct IF sampling, eliminating the need for an analog downconversion stage in many communications receivers.
When designing with this device, dedicate a continuous ground plane on layer 2 beneath the QFN exposed pad and stitch vias to the inner ground plane to achieve the specified 98 dB SFDR. Decouple AVDD33, DVDD, and OV_DD separately with 0.1 uF ceramic capacitors within 100 mils of the supply pins, and route the 105 MHz DDR clock trace with controlled 50 ohm impedance and length matching to within 50 ps of the data bit lanes.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives from the LTC2207/LTC2206 ADC family, and practical PCB layout notes that complement the manufacturer datasheet's numerical and engineering specifications.
直接替换替代料： LTC2207CUK-14 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
LTC2207IUK-14
✅ 直接替换📋 参考替代料（不在目录中）
LTC2207IUK-14#PBF
✅ 直接替换📋 参考替代料（不在目录中）
LTC2206CUK-14
✅ 直接替换📋 参考替代料（不在目录中）
LTC2205CUK-14
✅ 直接替换✓ 有现货
$19.9 / 个
查看数据手册 →LTC2206IUK-14#PBF
✅ 直接替换📋 参考替代料（不在目录中）
LTC2207CUK-14 最大额定值与电气特性
| 分辨率 | 14-bit |
| Sample Rate | 105 Msps |
| Architecture | Pipelined |
| Number of Channels | 1 |
| Input Type | Differential (PGA front end) |
| Input Frequency Range | Up to 700 MHz |
| SNR | 77.3 dB |
| SFDR | 98 dB |
| Output Interface | Parallel CMOS, DDR |
| 封装 | 48-pin QFN (7x7 mm) with exposed pad |
| 工作温度范围 | 0C to +70C (Commercial) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant (PBF suffix) |
| Screening Level | Commercial |
LTC2207CUK-14 引脚配置
| 引脚 1 | AIN+ — Differential analog input (positive) |
| 引脚 2 | AIN- — Differential analog input (negative) |
| 引脚 3 | SENSE — Reference mode select (internal vs external) |
| 引脚 4 | GND — Analog ground |
| 引脚 5 | VREF — Reference voltage bypass |
| 引脚 6 | REFT — Reference top decoupling |
| 引脚 7 | REFB — Reference bottom decoupling |
| 引脚 8 | CMODE — Common-mode voltage bypass |
| 引脚 9 | AVDD33 — Analog 3.3 V supply |
| 引脚 10 | AVDD33 — Analog 3.3 V supply |
| 引脚 11 | GND — Analog ground |
| 引脚 12 | OGND — Output driver ground |
| 引脚 13 | OV_DD — Output driver supply |
| 引脚 14 | D0 — CMOS data output bit 0 (LSB) |
| 引脚 15 | D1 — CMOS data output bit 1 |
| 引脚 16 | D2 — CMOS data output bit 2 |
| 引脚 17 | D3 — CMOS data output bit 3 |
| 引脚 18 | D4 — CMOS data output bit 4 |
| 引脚 19 | D5 — CMOS data output bit 5 |
| 引脚 20 | D6 — CMOS data output bit 6 |
| 引脚 21 | D7 — CMOS data output bit 7 |
| 引脚 22 | D8 — CMOS data output bit 8 |
| 引脚 23 | D9 — CMOS data output bit 9 |
| 引脚 24 | D10 — CMOS data output bit 10 |
| 引脚 25 | D11 — CMOS data output bit 11 |
| 引脚 26 | D12 — CMOS data output bit 12 |
| 引脚 27 | D13 — CMOS data output bit 13 (MSB) |
| 引脚 28 | DRO — Data ready output (clock-domain indicator) |
| 引脚 29 | OF — Overflow flag output |
| 引脚 30 | OGND — Output driver ground |
| 引脚 31 | OV_DD — Output driver supply |
| 引脚 32 | NC — Not connected (per datasheet) |
| 引脚 33 | CS — Chip select (active low) |
| 引脚 34 | SHDN — Shutdown (active low) |
| 引脚 35 | MODE — Output mode select (CMOS/LVDS) |
| 引脚 36 | GND — Digital ground |
| 引脚 37 | DVDD — Digital 1.8/2.5 V supply |
| 引脚 38 | GND — Digital ground |
| 引脚 39 | ENC+ — Encode clock input (positive) |
| 引脚 40 | ENC- — Encode clock input (negative) |
| 引脚 41 | ENC_GND — Encode clock ground |
| 引脚 42 | GND — Clock ground |
| 引脚 43 | AVDD33 — Analog 3.3 V supply |
| 引脚 44 | GND — Analog ground |
| 引脚 45 | PGA — PGA front-end bypass |
| 引脚 46 | PGA — PGA front-end bypass |
| 引脚 47 | BIAS — Bias current setting |
| 引脚 48 | GND — Analog ground |
典型应用
LTC2207CUK-14 适用于 6 应用s: Cellular Base-Station Receiver, Software Defined Radio (SDR), Cable Modem Termination System (CMTS), Radar and Sonar Signal Processing, Test and Measurement Instrumentation, Medical Imaging Ultrasound Receiver.
Cellular Base-Station Receiver
The LTC2207CUK-14's 105 Msps sample rate and 700 MHz input bandwidth enable direct IF sampling of cellular base-station signals at intermediate frequencies up to 70 MHz, eliminating a downconversion stage. With 77.3 dB SNR and 98 dB SFDR, it digitizes WCDMA and LTE signals with sufficient dynamic range to resolve adjacent-channel blockers. Place the part adjacent to the RF front-end mixer output and clock it from a low-jitter PLL to preserve SNR; use LVDS-like controlled-impedance traces and matched-length DDR clock-to-data routing to capture the full 105 Msps throughput.
推荐
Software Defined Radio (SDR)
The LTC2207CUK-14's 14-bit resolution at 105 Msps suits wideband SDR receivers digitizing HF through microwave bands. Direct sampling of 0-70 MHz intermediate outputs preserves dynamic range for software demodulation of multiple waveforms. The PGA front end scales the input range to maximize SNR for weak amateur-radio or tactical-radio signals. Use the part in conjunction with an FPGA such as a Xilinx Kintex or Altera Cyclone that captures the parallel CMOS/DDR data and performs channelization in DSP fabric.
推荐
Cable Modem Termination System (CMTS)
The LTC2207CUK-14's 98 dB SFDR allows digitizing full-bandwidth downstream cable modem channels (54-1000 MHz translated to IF) without intermodulation spurs. DOCSIS 3.0/3.1 head-end receivers demanding 14-bit linearity and 105 Msps capture the part. The single-channel differential input pairs cleanly with an upstream gain block; the CMOS output drives directly into an FPGA deserializer that performs upstream channelization and demodulation. Document selection notes: matched impedance routing is critical for 100 MHz bandwidth paths.
推荐
Radar and Sonar Signal Processing
The LTC2207CUK-14's wide analog input bandwidth (700 MHz) and 14-bit resolution capture pulsed-Doppler radar IF returns with adequate range resolution and dynamic range. Synchronous sampling at 105 Msps preserves phase information across the radar PRT, enabling coherent integration across multiple pulses. For sonar arrays, multiple 14-bit output lanes feed into beamforming FPGA logic that combines hydrophone channels. Plan PCB layout carefully: continuous ground beneath the exposed pad, separate analog/digital supply domains, and matched-length clock-to-data traces within 50 ps.
推荐
Test and Measurement Instrumentation
The LTC2207CUK-14's 77.3 dB SNR and 98 dB SFDR suit high-end oscilloscope and spectrum analyzer front-end channels. The 14-bit/105 Msps combination captures transient waveforms with 9.5 ns resolution and dynamic range sufficient for spectrum analysis up to 70 MHz. Use the part on the acquisition board of a digitizer card; the FPGA behind it performs waveform averaging and FFT processing. Document critical behavior: maintain SFDR anti-alias filtering; use the on-chip internal reference or an external low-noise reference for best DC accuracy.
推荐
Medical Imaging Ultrasound Receiver
The LTC2207CUK-14's single-channel, 14-bit, 105 Msps pipeline architecture enables beamformer-channel ultrasound receiver designs. Direct sampling of RF echo signals at intermediate frequencies preserves amplitude information for tissue characterization algorithms. With 77.3 dB SNR, the part captures small echoes from deep tissue without quantization-noise masking. Use the part in conjunction with a high-density FPGA that aggregates 32-128 parallel receive channels. Document PCB layout critical: matched-length routing and continuous ground plane for noise immunity.
推荐
推荐产品汇总
工程参考数据： LTC2207CUK-14 ——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 | LTC2207IUK-14 | LTC2207IUK-14#PBF | LTC2206CUK-14 | LTC2205CUK-14 | LTC2206IUK-14#PBF |
|---|---|---|---|---|---|---|
| Package | QFN-48 (7x7 mm) | QFN-48 (7x7) - same | QFN-48 (7x7) - same | QFN-48 (7x7) - same | QFN-48 (7x7) - same | QFN-48 (7x7) - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Sample Rate | 105 Msps | 105 Msps | 105 Msps | 80 Msps | 65 Msps | 80 Msps |
| Resolution | 14-bit | 14-bit | 14-bit | 14-bit | 14-bit | 14-bit |
| Temperature Grade | Commercial 0C to +70C | Industrial -40C to +85C | Industrial -40C to +85C | Commercial 0C to +70C | Commercial 0C to +70C | Industrial -40C to +85C |
| Lead-Free/RoHS | Standard (PBF variant for RoHS) | Standard (PBF variant for RoHS) | Lead-free/RoHS (PBF suffix) | Standard (PBF variant for RoHS) | Standard (PBF variant for RoHS) | Lead-free/RoHS (PBF suffix) |
| Architecture | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined |
| Output Type | Parallel CMOS, DDR | Parallel CMOS, DDR | Parallel CMOS, DDR | Parallel CMOS, DDR | Parallel CMOS, DDR | Parallel CMOS, DDR |
关键差异点
- Highest sample rate in the LTC2206/LTC2207 14-bit QFN-48 family （对比 LTC2206CUK-14)
- Commercial-grade pricing （对比 LTC2207IUK-14)
- Highest SFDR in the family for spectral-purity applications （对比 LTC2205CUK-14)
设计说明
Estimated: at 105 Msps, the LTC2207CUK-14's parallel CMOS DDR data outputs toggle at 210 MHz edges. Route the 14 data lanes (D0-D13), DRO, OF, and the encode clock pair (ENC+/ENC-) on the top layer with 50 ohm controlled impedance and length-matched within +/- 50 ps. Place the part adjacent to its companion FPGA on the same side of the PCB, and avoid routing any analog input traces across the digital output bus on inner layers.
Estimated: at full 105 Msps, the LTC2207CUK-14 draws approximately 230 mA from AVDD33 plus 50 mA from DVDD and OV_DD combined. Decouple AVDD33 with one 10 uF bulk cap and three 0.1 uF ceramics within 100 mils of each analog supply pin; isolate the analog and digital ground returns and join them only at the exposed pad. Use a ferrite bead on DVDD when the part shares a 3.3 V rail with other components to prevent digital switching noise coupling back into AVDD33.
Always specify the PBF (lead-free) suffix variant for new RoHS-compliant designs; the standard LTC2207CUK-14 may have SnPb lead finish that conflicts with lead-free assembly. Per the Analog Devices datasheet, the part supports both commercial (CUK) and industrial (IUK) temperature grades; do not substitute an IUK part on a board designed around CUK thermal envelopes without re-checking cold-start behavior. Avoid using the part with sample rates above 105 Msps - the on-chip PGA front end will introduce distortion.
Solder the exposed pad (EP) of the QFN-48 directly to a continuous ground plane on layer 2 with a via array (recommended 4x4 = 16 vias, 0.3 mm drill). Stitch the analog and digital grounds together only at this exposed pad to provide a single-star reference. Keep the input network (anti-alias filter and PGA bypass caps) within 50 mils of pins 1-8; keep the digital output bus (D0-D13, DRO, OF) clear of the analog input traces. Maintain 50 ohm termination on the ENC+/ENC- clock pair.
合规信息
Per the Analog Devices LTC2207/LTC2206 datasheet, the PBF suffix variant is lead-free/RoHS-compliant. The standard CUK package is commercial-temperature grade; the IUK suffix is the industrial variant. AEC-Q100 qualification status: not specifically listed - not recommended for automotive safety-critical applications.
