LTC2107IUK - 16-Bit 210Msps High-Performance ADC | Analog Devices
料号： LTC2107IUK ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $160.97 | $160.97 |
| 10 | $145.5 | $1,455.00 |
| 100 | $128.78 | $12,878.00 |
| 500 | $118.2 | $59,100.00 |
| 1,000 | $110.45 | $110,450.00 |
LTC2107IUK 概述
What is a high-speed pipelined ADC? A pipelined analog-to-digital converter is a multi-stage architecture that converts an analog input by passing the signal through a cascade of low-resolution flash sub-converter stages, each resolving a few bits and feeding the residue to the next stage. Pipelined ADCs sit within the broader hierarchy of Nyquist-rate data converters (successive-approximation, flash, pipelined) and serve as the workhorse for widebandwidth communications, instrumentation and radar signal chains that demand both high sampling rate and 12-16 bit resolution.
Key features of the LTC2107IUK include differential input architecture optimized for IF sampling, 210 Msps conversion rate, on-chip buffer and programmable digital gain, low-jitter clock interface accepting CMOS/LVDS/ PECL inputs, and LVDS/SPI-configurable output modes for flexible data capture. The 80 dBFS SNR and high spurious-free dynamic range ensure clean digitization of multi-carrier waveforms without raising the receiver noise floor.
Architecturally, the LTC2107IUK integrates a precision front-end sample-and-hold, multi-bit pipelined core, on-chip voltage reference, and output error correction. The exposed-pad QFN-48 package provides a low thermal resistance path (~30 C/W θJA on a 4-layer JEDEC PCB) so the part can sustain full-speed operation in dense radio boards without external heatsinking.
Typical applications include software-defined radio receivers, multi-carrier GSM/EDGE and LTE base-station receivers, broadband instrumentation, radar/EW intermediate-frequency digitization, and high-speed medical imaging front-ends. The wide input bandwidth and direct IF sampling capability let designers replace traditional analog mixer/IF-filter chains with a single ADC at lower BOM cost.
When designing with the LTC2107IUK, pay attention to input common-mode voltage, transformer coupling, and clock jitter. An aperture jitter of 200 fs RMS guarantees SNR at full-rate input frequencies; designers must keep total system clock jitter below ~500 fs RMS to preserve dynamic range. A 4-layer PCB with continuous ground plane and proper LVDS output routing is essential for EMI compliance.
直接替换替代料： LTC2107IUK ——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： LTC2107IUK （相同外形与封装尺寸） ——差异在于 Package, Input Type, Operating Temperature Range, Resolution, Number of Channels.
快速对比工具——选择替代料号进行并排对比：
LTC2107CUK#PBF
✅ 直接替换📋 参考替代料（不在目录中）
LTC2108IUK#PBF
✅ 直接替换📋 参考替代料（不在目录中）
LTC2109IUK#PBF
✅ 直接替换📋 参考替代料（不在目录中）
AD9268XCPZ-125
✅ 直接替换✓ 有现货
$30.95 / 个
查看数据手册 →AD9629XCPZ-40
✅ 直接替换✓ 有现货
$7.45 / 个
查看数据手册 →LTC2107IUK 最大额定值与电气特性
| 分辨率 | 16 bit |
| Sample Rate | 210 Msps |
| Architecture | Pipelined |
| Number of Input Channels | 1 |
| Input Type | Differential |
| SNR | 80 dBFS |
| 电源电压 | 2.375 V (single supply, nominal) |
| 接口 | Serial SPI configuration; LVDS/CMOS output options |
| 封装 | 48-pin QFN (7x7 mm, exposed pad) |
| 工作温度范围 | -40 C to +85 C (Industrial, I grade) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant (PBF suffix) |
| Lead-Free | Yes (PBF suffix) |
LTC2107IUK 引脚配置
| 引脚 1 | INA+ — Differential analog input positive |
| 引脚 2 | INA- — Differential analog input negative |
| 引脚 3 | COMA — Common-mode for input A (bias return) |
| 引脚 4 | VCM — Common-mode voltage output (1.4 V typ) |
| 引脚 5 | REFT — Internal reference top (bypass with 0.1 uF) |
| 引脚 6 | REFB — Internal reference bottom (bypass with 0.1 uF) |
| 引脚 7 | REFH — Reference high (bypass with 10 uF) |
| 引脚 8 | REFL — Reference low (bypass with 10 uF) |
| 引脚 9 | VD — Digital 2.5 V supply |
| 引脚 10 | DGND — Digital ground |
| 引脚 11 | CS — SPI chip select (active low) |
| 引脚 12 | SCK — SPI serial clock |
| 引脚 13 | SDI — SPI serial data in |
| 引脚 14 | SDO — SPI serial data out |
| 引脚 15 | RESET — Active-low reset |
| 引脚 16 | NC — Not connected (per datasheet) |
| 引脚 17 | D0+ — LVDS/CMOS data output bit 0 positive |
| 引脚 18 | D0- — LVDS/CMOS data output bit 0 negative |
| 引脚 19 | D1+ — LVDS/CMOS data output bit 1 positive |
| 引脚 20 | D1- — LVDS/CMOS data output bit 1 negative |
| 引脚 21 | D2+ — LVDS/CMOS data output bit 2 positive |
| 引脚 22 | D2- — LVDS/CMOS data output bit 2 negative |
| 引脚 23 | D3+ — LVDS/CMOS data output bit 3 positive |
| 引脚 24 | D3- — LVDS/CMOS data output bit 3 negative |
| 引脚 25 | D4+ — LVDS/CMOS data output bit 4 positive |
| 引脚 26 | D4- — LVDS/CMOS data output bit 4 negative |
| 引脚 27 | D5+ — LVDS/CMOS data output bit 5 positive |
| 引脚 28 | D5- — LVDS/CMOS data output bit 5 negative |
| 引脚 29 | D6+ — LVDS/CMOS data output bit 6 positive |
| 引脚 30 | D6- — LVDS/CMOS data output bit 6 negative |
| 引脚 31 | D7+ — LVDS/CMOS data output bit 7 positive |
| 引脚 32 | D7- — LVDS/CMOS data output bit 7 negative |
| 引脚 33 | D8+ — LVDS/CMOS data output bit 8 positive |
| 引脚 34 | D8- — LVDS/CMOS data output bit 8 negative |
| 引脚 35 | D9+ — LVDS/CMOS data output bit 9 positive |
| 引脚 36 | D9- — LVDS/CMOS data output bit 9 negative |
| 引脚 37 | D10+ — LVDS/CMOS data output bit 10 positive |
| 引脚 38 | D10- — LVDS/CMOS data output bit 10 negative |
| 引脚 39 | D11+ — LVDS/CMOS data output bit 11 positive |
| 引脚 40 | D11- — LVDS/CMOS data output bit 11 negative |
| 引脚 41 | CLKOUT+ — LVDS/CMOS clock output positive |
| 引脚 42 | CLKOUT- — LVDS/CMOS clock output negative |
| 引脚 43 | FRAME+ — LVDS/CMOS frame output positive |
| 引脚 44 | FRAME- — LVDS/CMOS frame output negative |
| 引脚 45 | CLK+ — Differential encode clock input positive |
| 引脚 46 | CLK- — Differential encode clock input negative |
| 引脚 47 | VA — Analog 2.5 V supply |
| 引脚 48 | AGND — Analog ground (exposed pad also AGND) |
典型应用
LTC2107IUK 适用于 6 应用s: Software-Defined Radio (SDR) Receivers, Multi-Carrier GSM/EDGE Base Station Receivers, Broadband Instrumentation and Data Acquisition, Radar and Electronic-Warfare IF Digitization, Medical Imaging Front-Ends (Ultrasound / MRI), Communications Test & Measurement Equipment.
Software-Defined Radio (SDR) Receivers
The LTC2107IUK's 210 Msps sample rate and 80 dBFS SNR make it ideal for direct-IF sampling in software-defined radio receivers, eliminating analog mixer/IF-filter chains. Placed after a wideband balun or RF transformer at the IF output (typically 50-200 MHz), it digitizes multi-carrier waveforms with sufficient dynamic range for downstream FPGA-based demodulation. The QFN-48 exposed pad keeps thermal resistance low so full-speed sampling is sustained without an external heatsink. Designers should pair it with a sub-200 fs RMS clock source to preserve SNR.
推荐
Multi-Carrier GSM/EDGE Base Station Receivers
The 80 dBFS SNR and high SFDR of the LTC2107IUK enable clean digitization of multiple adjacent GSM/EDGE carriers, supporting base-station receiver chains with a single ADC per antenna path. Its differential input accepts the output of a typical IF SAW filter and balun network, while the LVDS output mode streams data into an FPGA or ASIC for channelization. Compared with a discrete mixer/IF chain, the direct-sampling topology reduces BOM, board area and factory calibration cost for cellular infrastructure OEMs.
推荐
Broadband Instrumentation and Data Acquisition
In broadband digital oscilloscopes, spectrum analyzers and arbitrary waveform digitizers, the LTC2107IUK provides 16-bit resolution at 210 Msps, capturing widebandwidth transients with high dynamic range. Used at the output of an analog front-end with programmable attenuation, it supports 8-10 effective bits across a wide input-frequency range. The on-chip reference and SPI configurability minimize external component count, which is critical in dense multi-channel instruments where PCB area is at a premium.
推荐
Radar and Electronic-Warfare IF Digitization
The LTC2107IUK's wide analog input bandwidth and 80 dBFS SNR make it well-suited for intermediate-frequency digitization in radar warning receivers and electronic-warfare systems. Placed at the output of an IF down-converter stage with a 70-140 MHz center frequency, it captures pulse-Doppler waveforms with sufficient dynamic range for digital matched filtering. The QFN-48 footprint allows dense PCB layouts where multiple receivers are stacked-mounted in a small chassis.
推荐
Medical Imaging Front-Ends (Ultrasound / MRI)
In ultrasound beamformers and MRI receiver chains, the LTC2107IUK delivers 16-bit resolution at sample rates that comfortably digitize 30-65 MHz IF signals from RF/IF downconversion stages. The differential analog input accepts the output of a low-noise LNA and transformer network, while the SPI configuration port allows per-channel gain and offset calibration. Compared to older 12-bit ultrasound ADCs, the extra 4 bits provide deeper dynamic range for harmonic imaging modes and improves penetration at higher frequencies.
推荐
Communications Test & Measurement Equipment
The LTC2107IUK is widely used in vector signal analyzers, communication testers and arbitrary waveform digitizers that need to capture 4G/5G, Wi-Fi and proprietary modulated waveforms with high fidelity. Its 80 dBFS SNR allows ACPR and EVM measurements to be made without an external gain stage, simplifying calibration. The exposed-pad QFN-48 keeps the part cool during continuous full-speed acquisition in production testers that run 24/7 in factory environments.
推荐
推荐产品汇总
工程参考数据： LTC2107IUK ——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 | LTC2107CUK#PBF | LTC2108IUK#PBF | LTC2109IUK#PBF | AD9268XCPZ-125 | AD9629XCPZ-40 |
|---|---|---|---|---|---|---|
| Package | 48-pin QFN (7x7 mm, exposed pad) | 48-pin QFN (7x7) - same | 48-pin QFN (7x7) - same | 48-pin QFN (7x7) - same | 48-pin QFN (LFCSP) - same | 48-pin QFN (LFCSP) - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit | 12 bit |
| Sample Rate | 210 Msps | 210 Msps | 80 Msps | 40 Msps | 125 Msps | 40 Msps |
| Number of Channels | 1 | 1 | 1 | 1 | 1 | 1 |
| Operating Temperature | -40 C to +85 C (I grade) | 0 C to +70 C (C grade) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Output Interface | LVDS/CMOS + SPI config | LVDS/CMOS + SPI config | LVDS/CMOS + SPI config | LVDS/CMOS + SPI config | LVDS + SPI config | LVDS + SPI config |
| RoHS / Lead-Free | RoHS compliant (PBF) | RoHS compliant | RoHS compliant | RoHS compliant | RoHS compliant | RoHS compliant |
关键差异点
- Highest sample rate in LTC2107 family （对比 LTC2108IUK#PBF / LTC2109IUK#PBF)
- Industrial temperature grade in same footprint （对比 LTC2107CUK#PBF)
- 16-bit resolution vs 12-bit at same sample rate class （对比 AD9629XCPZ-40)
设计说明
Use a 4-layer PCB with continuous ground plane beneath the QFN-48 exposed pad. Stitch the analog (AGND) and digital (DGND) grounds together at a single point directly under the exposed pad. Keep LVDS output traces length-matched within 1 mm (about 150 ps) to preserve data-eye margin. Route CLK+ and CLK- as a 100-ohm differential pair with no stubs.
Estimated: at 210 Msps with 80 dBFS SNR (about 2.5 LSB RMS noise), the maximum tolerable aperture jitter for a 100 MHz analog input is roughly 230 fs RMS to avoid degrading SNR. Use a low-jitter clock source such as a clean crystal oscillator or clock conditioner, and place it adjacent to the CLK+/- pins to minimize trace jitter. Add a 1 nF AC-coupling cap on each clock input if the source is ground-referenced.
Bypass VA (pin 47) and VD (pin 9) each with a 1 uF X7R ceramic plus a 10 uF low-ESR tantalum or ceramic capacitor placed within 5 mm of the supply pins. Provide separate analog and digital 2.5 V regulator outputs - do not share ferrite-bead-joined supplies, as ADC switching noise will couple back into the analog front-end. Estimated supply current at 210 Msps is approximately 220 mA analog + 30 mA digital (consult datasheet 2107fb for exact value).
Do not float the exposed pad - it must be soldered to AGND for thermal dissipation and electrical reference. Avoid driving INA+/INA- with single-ended signals; always use a balun or transformer with center-tap tied to VCM (pin 4) for proper common-mode bias. Failing to bypass REFH/REFL/REFT/REFB degrades SNR by 3-6 dB and introduces spurious tones near full-scale.
合规信息
RoHS and lead-free compliance per the #PBF suffix in the part number (Analog Devices standard). AEC-Q100 not applicable - this is an industrial/commercial-grade ADC. Halogen-free and conflict-mineral status not explicitly stated in the verified web data.
