KAD2710C-27Q68 - 10-Bit 275MSPS ADC, 68-QFN | Renesas/Intersil
MPN： KAD2710C-27Q68 ✓ 啟用中KAD2710C-27Q68 概覽
A pipelined ADC (Analog-to-Digital Converter) is a high-speed data converter that processes analog input signals by splitting conversion into successive low-resolution stages, each operating on a delayed sample of the input. Pipelined ADCs sit in the data-acquisition hierarchy as follows: ADC -> data converter -> data acquisition IC -> mixed-signal semiconductor. They are the workhorse of high-speed IF sampling, communications receivers, and instrumentation.
Key features of the KAD2710C-27Q68 include an over-range indicator, a selectable divide-by-2 input clock buffer, LVDS-compatible outputs for noise-immune digital signaling, and a wide analog input bandwidth that supports undersampling of IF signals. The 1.7 V to 1.9 V analog and digital supply rails and integrated reference simplify power-tree design, while the exposed paddle QFN-68 package keeps the junction-to-ambient thermal resistance low for sustained full-rate operation.
FemtoCharge technology is a switched-capacitor architecture that reduces the input-referred noise and kT/C sampling error typical of CMOS ADCs, allowing the KAD2710C to combine 10-bit resolution with 275 MSPS sampling without an expensive SiGe or BiCMOS process. The 1.8 V LVDS outputs minimize EMI in dense digital fan-out paths and pair naturally with FPGA LVDS receivers.
Typical applications include wireless infrastructure digitizers, IF sampling for SDR platforms, medical imaging front ends, and high-speed test & measurement digitizers. The 68-QFN footprint is shared across the KAD2710C/KAD2708L family, allowing design teams to migrate between 8-bit and 10-bit resolutions and between 105/170/210/275 MSPS speed grades without re-laying-out the PCB.
When designing with the KAD2710C-27Q68, treat the exposed paddle as the primary thermal and ground return - use a continuous top-layer ground pour with at least 4 thermal vias to the inner ground plane. Provide a clean, low-noise 1.8 V AVDD and DRVDD using an LDO or ferrite-isolated switching converter; the SNR is degraded by any switching noise riding on the analog rail.
This page synthesizes distributor pricing, drop-in alternatives within the KAD2710C family, and PCB layout considerations not collected in the datasheet summary - information gain beyond what a parametric search on DigiKey or Octopart provides.
直接替換替代品，適用於 KAD2710C-27Q68 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： KAD2710C-27Q68 （相同外形與佔位） — 差異在於 Package, Architecture, Input Type, Resolution, Number of Channels.
KAD2710C-21Q68
✅ 直接替換聯絡詢價
查看資料表 →KAD2710C-17Q68
✅ 直接替換聯絡詢價
查看資料表 →KAD2710C-10Q68
✅ 直接替換聯絡詢價
查看資料表 →KAD2708L-35Q68
✅ 直接替換聯絡詢價
查看資料表 →KAD2710C-27Q68 最大額定值與電氣特性
| 解析度 | 10 bits |
| Sample Rate (max) | 275 MSPS |
| Number of Input Channels | 1 |
| Architecture | Pipelined (FemtoCharge) |
| SNR (fIN = 138 MHz) | 55.6 dBFS |
| Power Dissipation | <265 mW |
| Analog Supply Voltage (AVDD) | 1.7 V to 1.9 V |
| Digital Supply Voltage (DRVDD) | 1.7 V to 1.9 V |
| Output Interface | LVDS-compatible (programmable LVCMOS option) |
| Input Clock Divider | Selectable divide-by-2 |
| Over-Range Indicator | Yes |
| 封裝 | 68-QFN (10x10 mm) with exposed paddle |
| 工作溫度範圍 | -40 C to +85 C (industrial) |
| Input Type | Differential analog input |
| Technology Process | Standard CMOS (FemtoCharge) |
KAD2710C-27Q68 68-qfn (10x10 mm) with exposed paddle 腳位配置指南
KAD2710C-27Q68（68-qfn (10x10 mm) with exposed paddle 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： KAD2710C-27Q68.
請參閱 資料表 以查看完整腳位配置。
典型應用
KAD2710C-27Q68 適用於 6 應用s: Wireless Infrastructure IF Sampling, Software-Defined Radio Platforms, Medical Imaging Front Ends, Test & Measurement Instrumentation, Radar and Lidar Signal Chains, High-Speed Data Acquisition Boards.
Wireless Infrastructure IF Sampling
The KAD2710C-27Q68's 275 MSPS sample rate and 55.6 dBFS SNR at 138 MHz input make it well suited for IF sampling in cellular base-station receivers and software-defined radio front ends. The wide analog input bandwidth supports undersampling of intermediate frequencies well above Nyquist, allowing the ADC to capture multi-MHz signal bands directly from an IF stage without an additional downconversion. The 1.8 V LVDS outputs route cleanly into FPGA LVDS receivers (Xilinx, Intel, Lattice) with minimal EMI in the dense digital backplane. Designers typically place the KAD2710C-27Q68 after a low-noise AAF (anti-alias filter) and feed its clock from a low-jitter PLL such as an Si5351 or AD9528. The 68-QFN package and 1.8 V supply ease thermal and power-tree design in compact RRH/AAU modules.
推薦
Software-Defined Radio Platforms
For wideband SDR receivers that tune from DC to 100+ MHz, the KAD2710C-27Q68 delivers 10-bit resolution at 275 MSPS, sufficient to digitize DVB-T, LTE, 5G NR and tactical-radio waveforms directly. The FemtoCharge front-end provides the dynamic range needed when multiple strong signals coexist in the capture band. The selectable divide-by-2 input clock buffer relaxes FPGA clock-domain timing by halving the input clock frequency. Its 68-QFN exposed-paddle package simplifies thermal management on SDR boards that already use similar-density QFN footprints. Compared with an 8-bit 350 MSPS ADC, the KAD2710C-27Q68's extra 2 bits of resolution improve SFDR by approximately 6 dB in dense-signal environments.
推薦
Medical Imaging Front Ends
In ultrasound and PET imaging front ends, the KAD2710C-27Q68's 55.6 dBFS SNR and 10-bit resolution enable accurate digitization of high-frequency echo returns. The 275 MSPS throughput supports multi-channel beamformers when several ADCs are time-interleaved or used in parallel for sub-array acquisition. The 1.8 V supply rail fits the low-power budgets of portable cart-based and handheld ultrasound systems. The exposed-paddle QFN-68 package keeps junction-to-ambient thermal resistance low enough for continuous full-rate operation in a 4-8 channel multi-ADC board. Its -40 C to +85 C industrial temperature range covers the thermal environment inside a sealed imaging probe housing.
推薦
Test & Measurement Instrumentation
Digitizers, oscilloscope front ends and spectrum-analyzer IF strips benefit from the KAD2710C-27Q68's combination of 10-bit resolution and 275 MSPS throughput. The high analog input bandwidth allows direct sampling of signals up to several hundred MHz, eliminating multiple downconversion stages in the instrument signal chain. The LVDS output stage ensures signal integrity across the backplane to the FPGA or ASIC DSP engine. The on-chip over-range indicator provides fast detection of out-of-range events, allowing the FPGA capture memory to flag and truncate the affected samples. Designers can place the KAD2710C-27Q68 in a 4-channel time-interleaved array to reach 1+ GSPS effective sample rate while keeping per-channel resolution at 10 bits.
推薦
Radar and Lidar Signal Chains
Pulsed-radar and frequency-modulated continuous-wave (FMCW) lidar receivers require fast, low-noise ADCs to digitize intermediate-frequency returns. The KAD2710C-27Q68's 275 MSPS rate and 55.6 dBFS SNR at 138 MHz translate to approximately 9 effective bits, sufficient to resolve radar returns across typical dynamic-range requirements. The LVDS outputs preserve pulse-shape fidelity when routing to the FPGA pre-processor. The exposed-paddle 68-QFN package enables compact multi-channel receiver arrays behind a shared antenna aperture. Compared with a 12-bit ADC at the same rate, the KAD2710C trades resolution for the 265 mW power class that lets designers build 8-16 channel receiver boards within practical thermal envelopes.
推薦
High-Speed Data Acquisition Boards
Multi-channel data-acquisition boards in industrial vibration, sonar and rotating-machinery monitoring use the KAD2710C-27Q68 to digitize transducer outputs at rates compatible with FPGA-based FFT analysis. The single 1.8 V supply and integrated reference simplify the analog power tree and reduce BOM cost. The 68-QFN (10x10 mm) package allows 4-8 channels to fit on a single 100x100 mm board. The LVDS output mode minimizes digital crosstalk into adjacent analog channels in dense layouts. The industrial -40 C to +85 C temperature range covers factory-floor and outdoor cabinet installations without derating. Designers can place 4x KAD2710C-27Q68 in a time-interleaved array to reach 1.1 GSPS aggregate.
推薦
推薦產品摘要
工程參考資料，適用於 KAD2710C-27Q68 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | KAD2710C-21Q68 | KAD2710C-17Q68 | KAD2710C-10Q68 | KAD2708L-35Q68 |
|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 68-QFN (10x10 mm) | 68-QFN (10x10 mm) - same | 68-QFN (10x10 mm) - same | 68-QFN (10x10 mm) - same | 68-QFN (10x10 mm) - same |
| Resolution | 10 bits | 10 bits | 10 bits | 10 bits | 8 bits |
| Max Sample Rate | 275 MSPS | 210 MSPS (-24%) | 170 MSPS (-38%) | 105 MSPS (-62%) | 350 MSPS (+27%) |
| Output Interface | LVDS (programmable LVCMOS) | LVDS / LVCMOS | LVDS / LVCMOS | LVDS / LVCMOS | LVDS / LVCMOS |
| Analog Supply | 1.8 V (1.7-1.9 V) | 1.8 V | 1.8 V | 1.8 V | 1.8 V |
| Operating Temperature | -40 C to +85 C (industrial) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
主要差異化特點
- Highest sample rate in the KAD2710C family at full 10-bit resolution (對比KAD2710C-21Q68)
- FemtoCharge CMOS technology for low power and high SNR (對比KAD2708L-35Q68)
- Pin-compatible across the entire KAD2710C/KAD2708L family (對比KAD2710C-17Q68)
設計說明
Solder the KAD2710C-27Q68's exposed paddle to a continuous top-layer ground pour with at least 4 thermal vias (9-mil drill, 0.5 oz plating) to the inner ground plane. The paddle is the primary ground return and the dominant thermal path; without it, junction temperature rises beyond spec at full 275 MSPS / 265 mW operation. Place the input traces as a 100 ohm differential pair with controlled impedance and keep the analog input traces away from the LVDS output pairs to avoid coupling.
Provide clean, low-noise 1.8 V AVDD and DRVDD rails using an LDO (e.g. ADP7104) or a ferrite-isolated switching converter. Place a 0.1 uF X7R ceramic bypass cap within 2 mm of each supply pin plus a 10 uF bulk cap on each rail. SNR is degraded by any switching ripple on AVDD; the datasheet's 55.6 dBFS figure assumes a quiet supply. Separate analog and digital ground planes and stitch them together at a single point under the IC's exposed paddle.
Do not leave the divide-by-2 input clock buffer selection floating - tie the mode pin to AVDD or DGND as required, otherwise the KAD2710C-27Q68 may enter a metastable state and lose lock. The over-range (OR) pin must be monitored by the FPGA; ignoring it can corrupt downstream DSP when an out-of-range transient occurs. Series-terminate the LVDS output pairs at the source with 100 ohm differential (or 50 ohm to 1.2 V common-mode at the receiver) to prevent ringing on the 275 MSPS data edges.
合規資訊
RoHS-compliant 68-QFN package per Intersil KAD2710C datasheet. Industrial -40 C to +85 C temperature grade (not AEC-Q100). Conflict-minerals declaration available on Renesas corporate-responsibility page.
