LTC2262IUJ-12 - 12-Bit 150Msps Ultralow Power 1.8V ADC | ADI
部品番号: LTC2262IUJ-12 ✗ 生産終了| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $36.8 | $36.80 |
| 10 | $33.12 | $331.20 |
| 100 | $28.45 | $2,845.00 |
| 500 | $24.1 | $12,050.00 |
| 1,000 | $20.55 | $20,550.00 |
LTC2262IUJ-12 概要
An ADC (analog-to-digital converter) is a data-conversion integrated circuit that samples continuous analog input voltages and outputs discrete digital codes, forming the bridge between the analog front-end and the digital signal-processing chain of a system. ADC ICs belong to the data-converter product family, which sits within the broader mixed-signal semiconductor hierarchy alongside digital-to-analog converters (DACs) and clock-and-timing ICs.
Key features of the LTC2262-12 include ultralow 0.17 ps RMS aperture jitter, which enables accurate undersampling of IF frequencies in communications receivers without degrading noise performance; a differential input architecture for common-mode noise rejection; an integrated high-bandwidth track-and-hold; and CMOS-compatible parallel digital outputs. The exposed-pad QFN-40 package provides a low thermal-resistance path for reliable operation at full speed over the -40 C to +85 C industrial temperature range.
Typical applications include cellular base-station receiver IF digitizers, software-defined radio (SDR) front-ends, medical imaging ultrasound signal chains, cable-headend modems, and high-speed multi-channel data-acquisition cards. The wide full-power bandwidth and excellent SFDR at high input frequencies also make the part well-suited to radar and spectrum-analysis equipment.
When designing with the LTC2262-12, follow Analog Devices' reference-layout guidance for the QFN-40 exposed pad: use a solid ground plane stitched with vias beneath the pad, place the front-end anti-alias filter and the ADC input network as close to the analog inputs as possible, and decouple the 1.8 V analog and 1.8 V digital rails with low-ESR ceramic capacitors to preserve the datasheet's SNR and SFDR numbers.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical layout guidance that goes beyond the manufacturer datasheet to help engineers evaluate and qualify the LTC2262IUJ-12 quickly.
ドロップイン代替品: LTC2262IUJ-12 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: LTC2262IUJ-12 （同一形状・フットプリント） — 相違点: Package, Number of Channels, Operating Temperature, Resolution, RoHS Status.
クイック比較ツール — 並列比較する代替部品を選択:
LTC2262IUJ-14#PBF
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LTC2260IUJ-12#PBF
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LTC2262IUJ-12#PBF
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LTC2262IUJ-12#TRPBF
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LTC2262IUJ-12 最大定格＆電気的特性
| 分解能 | 12 bits |
| サンプリングレート | 150 Msps |
| Number of Input Channels | 1 (differential) |
| Architecture | Pipelined |
| SNR | 70.5 dB |
| SFDR | 88 dB |
| Aperture Jitter | 0.17 ps RMS |
| 電源電圧 | 1.8 V |
| Data Interface | Parallel CMOS |
| Input Type | Differential |
| パッケージ | 40-pin QFN EP (6x6 mm) |
| 動作温度 | -40 C to +85 C |
| 実装タイプ | Surface Mount |
| Packaging | Tube (PBF), Tape & Reel (TRPBF) |
| Lead-Free / RoHS | Yes (RoHS compliant, PBF suffix) |
LTC2262IUJ-12 ピン構成
| ピン 1 | GND — Ground |
| ピン 2 | AIN+ — Differential analog input (positive) |
| ピン 3 | AIN- — Differential analog input (negative) |
| ピン 4 | VCM — Common-mode voltage output |
| ピン 5 | GND — Ground |
| ピン 6 | REFT — Internal reference top |
| ピン 7 | REFB — Internal reference bottom |
| ピン 8 | GND — Ground |
| ピン 9 | OVdd — Output driver supply |
| ピン 10 | OGND — Output driver ground |
| ピン 11 | D0 — Data output bit 0 (LSB) |
| ピン 12 | D1 — Data output bit 1 |
| ピン 13 | D2 — Data output bit 2 |
| ピン 14 | D3 — Data output bit 3 |
| ピン 15 | D4 — Data output bit 4 |
| ピン 16 | D5 — Data output bit 5 |
| ピン 17 | D6 — Data output bit 6 |
| ピン 18 | D7 — Data output bit 7 |
| ピン 19 | D8 — Data output bit 8 |
| ピン 20 | D9 — Data output bit 9 |
| ピン 21 | D10 — Data output bit 10 |
| ピン 22 | D11 — Data output bit 11 (MSB) |
| ピン 23 | OGND — Output driver ground |
| ピン 24 | OVdd — Output driver supply |
| ピン 25 | OF — Data output overflow flag |
| ピン 26 | CLKOUT — Clock output (test/debug) |
| ピン 27 | CLK — Clock input |
| ピン 28 | CLK- — Differential clock complement |
| ピン 29 | AVdd — Analog supply |
| ピン 30 | AGND — Analog ground |
| ピン 31 | SENSE — Reference programming pin |
| ピン 32 | VREF — Reference voltage I/O |
| ピン 33 | MODE — Mode selection pin |
| ピン 34 | PD — Power-down control |
| ピン 35 | RESET — Reset control |
| ピン 36 | CS — Chip select / serial interface enable |
| ピン 37 | SCK — Serial configuration clock |
| ピン 38 | SDI — Serial configuration data in |
| ピン 39 | SDO — Serial configuration data out |
| ピン 40 | GND — Ground |
主な用途
LTC2262IUJ-12 の用途: 6 件s: Cellular Base-Station IF Sampling, Software-Defined Radio (SDR) Front-End, Medical Imaging Ultrasound Receivers, High-Speed Data Acquisition Cards, Cable Headend Modem Downstream Capture, Radar and Spectrum Analysis Receivers.
Cellular Base-Station IF Sampling
The LTC2262IUJ-12's 150 Msps conversion rate, 70.5 dB SNR, and 88 dB SFDR make it well matched to cellular base-station IF digitizers. According to the LTC2262-12 datasheet, the ultralow 0.17 ps RMS aperture jitter allows accurate undersampling of high-IF carriers (70 MHz to 140 MHz and beyond) in WCDMA, LTE, and multi-carrier GSM receivers. The differential analog input rejects common-mode noise from the front-end mixer, while the parallel CMOS outputs interface directly to an FPGA or DSP baseband processor. Placed between the SAW filter and the digital receiver, the LTC2262IUJ-12 preserves the noise floor needed for adjacent-channel selectivity, and the 1.8 V supply simplifies power-tree design in dense base-station line cards.
おすすめ
Software-Defined Radio (SDR) Front-End
The LTC2262IUJ-12 fits SDR front-ends that need wideband IF capture at low power. The pipelined architecture combined with 70.5 dB SNR and 88 dB SFDR allows digitizing wide dynamic-range signals from HF through L-band microwave without sacrificing linearity. Its 1.8 V analog and digital rails simplify integration with FPGA transceivers such as the Analog Devices AD9361 family, where the parallel CMOS bus connects directly to the FPGA logic-array fabric. The 40-QFN EP (6x6 mm) package keeps the front-end footprint small enough for handheld and airborne SDR platforms, while the -40 C to +85 C industrial temperature range supports outdoor and vehicular deployments. Unlike higher-speed ADCs in this package, it enables sub-1 W total power at full sampling rate.
おすすめ
Medical Imaging Ultrasound Receivers
In medical ultrasound receivers, the LTC2262IUJ-12 is placed in the per-channel signal chain immediately after the time-gain-compensation (TGC) amplifier and low-pass anti-alias filter. The 150 Msps rate supports multi-MHz transducer bandwidths, while the 70.5 dB SNR preserves the dynamic range needed to detect small tissue-echo variations. The differential input rejects the high-side switch-mode noise of the system power supply, and the parallel CMOS outputs feed directly into an FPGA beamformer or DSP processor. The exposed-pad QFN-40 package dissipates less than 150 mW at full speed, which is critical for dense multi-channel probe heads where thermal density is a constraint. Industrial temperature grade ensures reliability in clinical and portable diagnostic equipment.
おすすめ
High-Speed Data Acquisition Cards
The LTC2262IUJ-12 fits PCI Express and PXIe data-acquisition cards requiring 150 Msps capture with moderate resolution. The 70.5 dB SNR is well above the noise floor of typical analog front-ends, while the parallel CMOS outputs latch directly into an FPGA FIFO before DMA transfer to the host CPU. The 40-QFN EP (6x6 mm) package allows multi-card stacking in a single chassis, and the 1.8 V supply integrates with common point-of-load regulators such as the LTM240 and ADP1741. AC output is suited to digitizing transient signals, radar returns, and high-speed sensor outputs in laboratory instrumentation, with -40 C to +85 C industrial temperature coverage for outdoor and aerospace test ranges.
おすすめ
Cable Headend Modem Downstream Capture
The LTC2262IUJ-12's combination of 88 dB SFDR and 150 Msps capture suits cable headend downstream receivers that must digitize DOCSIS 3.x QAM carriers without intermodulation spurs. The differential input accommodates the high common-mode swing of the upstream/downstream diplexer output, while the 0.17 ps RMS jitter allows accurate sampling of 100 MHz+ IF carriers. The 1.8 V parallel CMOS outputs are level-compatible with the FPGA PHY layer of typical headend demodulators, and the 40-QFN EP package provides a compact footprint for high-density line-card designs.
おすすめ
Radar and Spectrum Analysis Receivers
The LTC2262IUJ-12 is suitable for IF-stage digitizers in radar receivers and spectrum analyzers, where its ultralow 0.17 ps RMS jitter and 88 dB SFDR preserve the spur-free dynamic range required to resolve small returns adjacent to large carriers. The 150 Msps rate supports IF bandwidths beyond 60 MHz at the Nyquist edge, allowing direct digitization of radar IF outputs without an analog downconversion stage. The industrial -40 C to +85 C temperature range supports outdoor radar installations and military field equipment. The 40-QFN EP (6x6 mm) package integrates cleanly onto compact signal-processing boards alongside an FPGA or DSP running the FFT and detection stack.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: LTC2262IUJ-12 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | LTC2262IUJ-14#PBF | LTC2260IUJ-12#PBF | LTC2262IUJ-12#PBF | LTC2262IUJ-12#TRPBF |
|---|---|---|---|---|---|
| Package | 40-QFN EP (6x6) | 40-QFN EP (6x6) - same | 40-QFN EP (6x6) - same | 40-QFN EP (6x6) - same | 40-QFN EP (6x6) - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 12 bits | 14 bits | 12 bits | 12 bits | 12 bits |
| Sampling Rate | 150 Msps | 150 Msps | 105 Msps | 150 Msps | 150 Msps |
| SNR | 70.5 dB | ~73 dB | 70.5 dB | 70.5 dB | 70.5 dB |
| SFDR | 88 dB | 88 dB | 88 dB | 88 dB | 88 dB |
| Supply Voltage | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V |
| Lifecycle Status | Obsolete (DigiKey 2026-10-13) | Obsolete (same family) | Obsolete (same family) | Obsolete (re-stocked) | Obsolete (re-stocked) |
主な差別化要因
- Ultralow 0.17 ps RMS aperture jitter （vs LTC2260IUJ-12#PBF)
- Full 150 Msps sampling at 1.8 V supply （vs LTC2206IUK#PBF)
- Drop-in compatibility with 14-bit family member （vs LTC2262IUJ-14#PBF)
設計ノート
Use a continuous ground plane beneath the 40-QFN EP (6x6 mm) package and stitch the exposed pad to ground with a 3x3 array of 0.3 mm thermal vias. Place the front-end anti-alias filter and the ADC input network within 5 mm of the AIN+/AIN- pins. Keep digital output traces short and route them over a single continuous digital ground region that joins the analog ground only at the exposed pad to avoid coupling digital noise into the analog input.
Decouple AVdd, OVdd, and the bandgap reference pins with 1 uF X7R ceramic capacitors placed within 2 mm of the supply pins, in parallel with a 10 uF bulk capacitor at the regulator output. Use a low-noise LDO such as the LT3042 or ADP1761 for the analog 1.8 V rail; switching regulators introduce spurs that degrade SNR and SFDR at the converter's output.
Drive the CLK input with a low-jitter differential source such as the LTC6951 or a clean FPGA LVDS output. Total RMS jitter must remain below 0.5 ps to preserve the LTC2262IUJ-12's 0.17 ps aperture-jitter advantage at IF; even a 2 ps extra clock jitter can reduce SNR by 5 dB at 100 MHz input. Keep the clock trace impedance-matched (100 ohm differential) and length-matched to within 1 mm.
Do not operate the LTC2262IUJ-12 above the absolute maximum sampling rate of 150 Msps - overspeed degrades SFDR and is not characterized. Ensure the MODE and SENSE pins are tied to the correct logic level for the desired full-scale range and clock-divider mode. Always issue a software RESET after power-up before initiating conversion to guarantee deterministic start-of-conversion alignment.
コンプライアンス情報
RoHS and lead-free per #PBF suffix in Analog Devices ordering code. Halogen-free status not stated in the LTC2262-12 datasheet.
