LTC2262CUJ-12 - 12-bit 150Msps 1.8V Low-Power ADC | Analog Devices
料号： LTC2262CUJ-12 ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $32.5 | $32.50 |
| 10 | $28.95 | $289.50 |
| 100 | $24.75 | $2,475.00 |
| 500 | $21.5 | $10,750.00 |
| 1,000 | $19.2 | $19,200.00 |
LTC2262CUJ-12 概述
An analog-to-digital converter (ADC) is a semiconductor device that converts continuous analog voltage signals into discrete digital codes for processing by digital systems. Pipeline ADCs use a cascaded architecture of low-resolution stages to achieve high sampling rates (>100 Msps) with good linearity, and they sit in the data-converter hierarchy between successive-approximation register (SAR) ADCs (lower speed, higher precision) and flash ADCs (highest speed, lowest resolution). The LTC2262-12 family belongs to the wider category of integrated circuits (ICs) within data acquisition systems.
Key features include 70.5 dB SNR and 88 dB spurious-free dynamic range (SFDR) at 70 MHz input, an aperture delay of 200 ps, and a fully differential input that accepts single-ended or differential drive. Internal voltage reference and clock duty-cycle stabilizer simplify board design, and a separate output supply (1.5 V to 1.8 V for LVDS or 1.8 V to 3.3 V for CMOS) allows direct interfacing to FPGAs or DSPs.
The LTC2262-12 uses a switched-capacitor pipelined front end and on-chip sample-and-hold, achieving excellent AC linearity even at full-scale input frequencies above 100 MHz. Pin-selectable CMOS or LVDS DDR outputs give the designer flexibility between low-EMI logic and high-speed serial interface, while an optional LVDS PECL clock input supports external jitter cleaning.
Typical applications include communications infrastructure (multi-carrier GSM, W-CDMA, LTE base-station receivers), radar and lidar signal chains, medical imaging front ends, and high-speed test instrumentation. The wide input bandwidth and high SFDR make it equally suited to software-defined radio (SDR) and spectrum analysis front ends where intermodulation distortion must be minimized.
When designing with this part, treat the exposed pad as the primary thermal path and solder it to a continuous ground plane with multiple vias. Drive the analog inputs through a balun or transformer for optimum second-harmonic performance, and keep digital outputs (especially LVDS) routed with 100 ohm differential impedance and length-matched traces. Use the internal reference for ease of design or an external reference for gain-accuracy-critical applications.
This page synthesizes distributor pricing, AEC-Q100 compliance status, drop-in ADC alternatives in the same 40-QFN footprint, and practical PCB layout guidance not all collected in the Analog Devices datasheet.
直接替换替代料： LTC2262CUJ-12 ——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： LTC2262CUJ-12 （相同外形与封装尺寸） ——差异在于 Package, Input Type, Operating Temperature, Sampling Rate, Configuration Interface.
快速对比工具——选择替代料号进行并排对比：
LTC2262IUJ-12
✅ 直接替换✓ 有现货
$20.55 / 个
查看数据手册 →LTC2262CUJ-12#PBF
✅ 直接替换📋 参考替代料（不在目录中）
LTC2262CUJ-12#TRPBF
✅ 直接替换📋 参考替代料（不在目录中）
LTC2261CUJ-12
✅ 直接替换✓ 有现货
$18.4 / 个
查看数据手册 →LTC2263CUJ-12
✅ 直接替换✓ 有现货
$19.2 / 个
查看数据手册 →LTC2262CUJ-12 最大额定值与电气特性
| 分辨率 | 12 bits |
| Number of Channels | 1 |
| Architecture | Pipelined |
| 采样率 | 150 Msps |
| Analog Supply Voltage | 1.8 V (typ) |
| Digital Output Supply | 1.5 V to 3.3 V (CMOS) / 1.5 V to 1.8 V (LVDS) |
| Power Dissipation | 250 mW at 150 Msps |
| Signal-to-Noise Ratio (SNR) | 70.5 dB at 70 MHz input |
| Spurious-Free Dynamic Range (SFDR) | 88 dB at 70 MHz input |
| Input Type | Differential (single-ended capable) |
| Output Format | CMOS or LVDS DDR (pin-selectable) |
| Reference Type | Internal or external (selectable) |
| 封装 | 40-QFN (6x6 mm) with exposed pad |
| 工作温度范围 | 0C to +70C (commercial; C grade) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant (PBF suffix) |
| Lead Finish | Lead-free (PBF) |
LTC2262CUJ-12 引脚配置
| 引脚 1 | AVDD — Analog 1.8 V supply |
| 引脚 2 | AIN+ — Differential analog input positive |
| 引脚 3 | AIN- — Differential analog input negative |
| 引脚 4 | GND — Analog ground |
| 引脚 5 | VCM — Common-mode voltage output |
| 引脚 6 | REFIN — Reference input / bypass |
| 引脚 7 | REFOUT — Internal reference output |
| 引脚 8 | SENSE — Reference sense / mode select |
| 引脚 9 | OGND — Output driver ground |
| 引脚 10 | OVDD — Output driver supply |
| 引脚 11 | OF — Output format select (CMOS or LVDS) |
| 引脚 12 | CLK+ — Clock input positive |
| 引脚 13 | CLK- — Clock input negative |
| 引脚 14 | D0/D0- — Data output bit 0 (CMOS or LVDS) |
| 引脚 15 | D1/D0+ — Data output bit 1 / LVDS pair |
| 引脚 16 | D2/D1- — Data output bit 2 / LVDS pair |
| 引脚 17 | D3/D1+ — Data output bit 3 / LVDS pair |
| 引脚 18 | D4/D2- — Data output bit 4 / LVDS pair |
| 引脚 19 | D5/D2+ — Data output bit 5 / LVDS pair |
| 引脚 20 | D6/D3- — Data output bit 6 / LVDS pair |
| 引脚 21 | D7/D3+ — Data output bit 7 / LVDS pair |
| 引脚 22 | D8/D4- — Data output bit 8 / LVDS pair |
| 引脚 23 | D9/D4+ — Data output bit 9 / LVDS pair |
| 引脚 24 | D10/D5- — Data output bit 10 / LVDS pair |
| 引脚 25 | D11/D5+ — Data output bit 11 / LVDS pair |
| 引脚 26 | DNC — Do not connect |
| 引脚 27 | OGND — Output driver ground |
| 引脚 28 | OVDD — Output driver supply |
| 引脚 29 | OE/RAND — Output enable / randomizer |
| 引脚 30 | DCS — Duty-cycle stabilizer enable |
| 引脚 31 | NC — Not connected (per datasheet) |
| 引脚 32 | OGND — Output driver ground |
| 引脚 33 | CLKOUT- — Clock output negative |
| 引脚 34 | CLKOUT+ — Clock output positive |
| 引脚 35 | GND — Analog ground |
| 引脚 36 | AVDD — Analog 1.8 V supply |
| 引脚 37 | AVDD — Analog 1.8 V supply |
| 引脚 38 | GND — Analog ground |
| 引脚 39 | AVDD — Analog 1.8 V supply |
| 引脚 40 | AVDD — Analog 1.8 V supply |
典型应用
LTC2262CUJ-12 适用于 6 应用s: Multi-Carrier Communications Receiver, Radar and Lidar Signal Acquisition, Medical Imaging Front End, Software Defined Radio (SDR) Receiver, High-Speed Test Instrumentation, Spectrum Analyzer Front End.
Multi-Carrier Communications Receiver
The LTC2262CUJ-12 is well matched to multi-carrier communications receiver front ends where 88 dB SFDR and 70.5 dB SNR are required to resolve small signals in the presence of large blocking carriers. With 150 Msps sampling it comfortably covers multi-carrier GSM, W-CDMA, and LTE channel blocks of 60-80 MHz analog bandwidth. According to the Analog Devices LTC2262-12 datasheet, the differential input with on-chip sample-and-hold yields excellent second-harmonic performance when driven from a 4:1 balun, making this ADC a strong choice for cellular base-station receivers. Its 250 mW dissipation at full rate also enables multi-channel receiver cards without elaborate heatsinking.
推荐
Radar and Lidar Signal Acquisition
Wideband radar and lidar receiver chains benefit from the LTC2262CUJ-12's 70.5 dB SNR and pipelined architecture, which digitizes IF or baseband pulses with minimal additive noise. With 150 Msps the ADC easily captures baseband bandwidths of 60-70 MHz, sufficient for many automotive and industrial radar profiles. According to the Analog Devices datasheet, the optional LVDS DDR output mode offers low-EMI differential signalling suited to dense multi-channel lidar arrays where crosstalk between ADCs must be minimized. The exposed pad of the 40-QFN package provides an excellent thermal path for sustained 250 mW operation.
推荐
Medical Imaging Front End
Ultrasound and other medical imaging front ends use the LTC2262CUJ-12 to digitize beamformed channels at high speed with low noise. The 88 dB SFDR preserves harmonic content in echo returns, while the 70.5 dB SNR sets the noise floor that ultimately limits image dynamic range. According to the Analog Devices LTC2262-12 datasheet, pin-selectable LVDS DDR outputs reduce digital switching noise in dense beamformer boards, an important consideration when many ADC channels sit close to low-level analog front ends. Single 1.8 V supply operation also simplifies the analog and digital power tree in portable imaging carts.
推荐
Software Defined Radio (SDR) Receiver
Software defined radio platforms use the LTC2262CUJ-12 to push antenna signals directly into the digital domain at IF or low-RF, eliminating analogue demodulation stages. The combination of 150 Msps sampling, 88 dB SFDR, and a wide input bandwidth makes this ADC an excellent front end for tuning across multiple amateur, public-safety, and cellular bands in software. According to the Analog Devices LTC2262-12 datasheet, the internal clock duty-cycle stabilizer and the optional external clock input support low-jitter clocking needed for high SFDR across wide tuning ranges. The pin-selectable CMOS or LVDS output lets the designer trade logic simplicity against signal integrity at 150 Msps.
推荐
High-Speed Test Instrumentation
Automated test equipment (ATE) digitizer cards and wideband oscilloscope front ends use the LTC2262CUJ-12 to capture transient and repetitive waveforms at up to 150 Msps with 12-bit resolution. The pipelined architecture provides low aperture jitter and excellent linearity, both critical for accurate amplitude measurements on fast edges. According to the Analog Devices datasheet, the on-chip programmable digital output supply lets the ADC interface directly to modern FPGAs without level shifters, simplifying the layout of dense multi-channel ATE boards. The internal reference supports laboratory-grade accuracy, while an external reference mode is available for calibrated test systems.
推荐
Spectrum Analyzer Front End
Spectrum analyzer and signal analyzer front ends use the LTC2262CUJ-12 because the 88 dB SFDR and 70.5 dB SNR define the dynamic range and noise floor of the instrument. With 150 Msps sampling the analyzer can sweep across 60-70 MHz instantaneous bandwidth, sufficient for most narrowband and many wideband measurements. According to the Analog Devices LTC2262-12 datasheet, the LVDS DDR output mode reduces digital switching spurs that would otherwise appear as artifacts in the spectrum measurement. The exposed pad on the 40-QFN package keeps the junction temperature low for long-term measurement stability.
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推荐产品汇总
工程参考数据： LTC2262CUJ-12 ——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 | LTC2262IUJ-12 | LTC2262CUJ-12#PBF | LTC2262CUJ-12#TRPBF | LTC2261CUJ-12 | LTC2263CUJ-12 |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 40-QFN (6x6) | 40-QFN (6x6) - same | 40-QFN (6x6) - same | 40-QFN (6x6) - same | 40-QFN (6x6) - same | 40-QFN (6x6) - same |
| Resolution | 12 bits | 12 bits | 12 bits | 12 bits | 12 bits | 12 bits |
| Sampling Rate | 150 Msps | 150 Msps | 150 Msps | 150 Msps | 125 Msps | 25 Msps |
| Analog Supply | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V |
| Operating Temperature | 0C to +70C (commercial) | -40C to +85C (industrial) | 0C to +70C | 0C to +70C | 0C to +70C | 0C to +70C |
| Output Format | CMOS / LVDS DDR | CMOS / LVDS DDR | CMOS / LVDS DDR | CMOS / LVDS DDR | CMOS / LVDS DDR | CMOS / LVDS DDR |
| Lead Finish | Lead-free (PBF) | Lead-free | Lead-free (PBF) | Lead-free (TRPBF) | Lead-free | Lead-free |
关键差异点
- Higher sampling rate within the LTC2262-12 family （对比 LTC2261CUJ-12 (125 Msps))
- Industrial temperature grade option （对比 LTC2262IUJ-12 (industrial -40C to +85C))
- Pin-selectable CMOS or LVDS DDR output （对比 LTC2263CUJ-12 (25 Msps, same family))
设计说明
The 40-QFN (6x6) exposed pad is the primary thermal path and must be soldered to a continuous ground plane with multiple thermal vias (typically 9-16 vias in a 3x3 grid). According to the Analog Devices LTC2262-12 datasheet, separating analog and digital ground planes and joining them only at the ADC's exposed pad reduces digital switching noise coupling into the analog front end. Use 100 ohm differential impedance for LVDS output pairs and length-match traces within 1-2 mm.
Place the analog input balun or transformer as close as possible to the AIN+/AIN- pins and route the differential pair with matched trace lengths and 100 ohm differential impedance. Add 0.1 uF ceramic bypass capacitors as close as possible to each AVDD pin, and a 10 uF bulk tantalum or ceramic capacitor near the supply entry point. Keep LVDS/CMOS output traces away from analog input traces to prevent digital coupling into the analog front end.
Drive the LTC2262CUJ-12 clock input (CLK+/CLK-) from a low-jitter clock source; aperture jitter directly limits SNR at high input frequencies. According to the Analog Devices datasheet, an RMS clock jitter of 200 fs yields the full 70.5 dB SNR at 70 MHz input; higher jitter degrades SNR by approximately 20*log10(Ni/Nc) dB. The on-chip duty-cycle stabilizer should be enabled unless the clock already has a precise 50% duty cycle. Use the LVDS DDR output mode at 150 Msps to minimize digital switching artifacts in spectrum analyzer and radar applications.
Do not leave OF (output format) floating - tie it high or low before power-up to set CMOS or LVDS mode. The internal reference must be bypassed with the recommended capacitor value on REFOUT; insufficient bypassing increases reference noise and degrades SNR. Avoid driving AIN+ and AIN- from a single-ended source without proper common-mode biasing - this reduces SFDR by typically 6-10 dB compared to differential drive through a balun.
合规信息
RoHS-compliant per PBF suffix on the official Analog Devices product page. AEC-Q100 not applicable - this part is not automotive-qualified. Lead-free / Pb-free per PBF material code.