LTC2288IUP - Dual 10-Bit 65Msps 3V ADC | Analog Devices
料号： LTC2288IUP ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.2 | $162.00 |
| 100 | $13.59 | $1,359.00 |
| 500 | $12.1 | $6,050.00 |
| 1,000 | $11.05 | $11,050.00 |
LTC2288IUP 概述
A pipelined ADC is a multi-stage converter architecture that processes one sample per clock cycle after an initial pipeline delay, achieving high sampling rates while consuming moderate power. Pipelined ADCs sit within the broader ADC taxonomy (flash > folding > pipelined > SAR > sigma-delta), offering the best speed-resolution trade-off for 8-bit to 14-bit IF/baseband sampling in communications, imaging, and instrumentation. Dual-channel devices such as the LTC2288IUP are commonly used for I/Q baseband digitization where matched channel performance is critical.
Key features include 10-bit resolution, 65Msps sample rate, 3V single supply operation (2.85V to 3.4V), 61dB SNR at 14MHz input, and an integrated digital error correction engine. The device supports both single-ended and differential input configurations, with input bandwidth exceeding 250MHz. The 64-QFN package provides a low thermal-resistance path via the exposed pad for reliable operation across the industrial temperature range.
The LTC2288IUP is well-suited for cellular base station receivers, digital predistortion feedback paths, IF sampling in software-defined radios, medical imaging front-ends, and high-speed data acquisition modules. Its dual matched channels simplify I/Q demodulation and reduce board area by integrating two converters into one package.
When designing with the LTC2288IUP, provide a low-impedance analog ground plane and stitch the exposed pad with multiple vias to a ground pour to minimize thermal and noise coupling. A 0.1uF bypass capacitor placed within 2mm of each supply pin and a clean low-noise 3V LDO (such as the LT1761) feeding AVDD ensures rated SNR performance is achieved.
This page synthesizes distributor pricing, drop-in 64-QFN alternatives, and application guidance not found on standard distributor listings, providing a single engineering reference for the LTC2288IUP.
直接替换替代料： LTC2288IUP ——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： LTC2288IUP （相同外形与封装尺寸） ——差异在于 RoHS Status, Input Type, Package, Operating Temperature Range, Sample Rate.
快速对比工具——选择替代料号进行并排对比：
LTC2287IUP
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
LTC2286IUP
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
LTC2288CUP
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$9.05 / 个
查看数据手册 →LTC2288IUP#PBF
✅ 直接替换📋 参考替代料（不在目录中）
LTC2287CUP
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$7.05 / 个
查看数据手册 →LTC2280CUP
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$15.85 / 个
查看数据手册 →LTC2288IUP 最大额定值与电气特性
| 分辨率 | 10 bit |
| Number of Channels | 2 (dual) |
| Sample Rate | 65 Msps |
| Input Type | Differential / Single-ended |
| Supply Voltage (AVDD/OVDD) | 2.85 V to 3.4 V |
| SNR | 61 dB at 14 MHz input (per datasheet) |
| Input Bandwidth | 250 MHz (typ) |
| Architecture | Pipelined |
| Data Interface | Parallel CMOS |
| 工作温度范围 | -40 C to +85 C (I grade) |
| 封装 | 64-pin QFN (9x9 mm) with EP |
| 安装类型 | Surface Mount |
| MSL 等级 | 1 (unlimited) |
| RoHS 状态 | Compliant (#PBF suffix) |
LTC2288IUP 引脚配置
| 引脚 1 | GND — Ground |
| 引脚 2 | OGND — Output driver ground |
| 引脚 3 | D9B — Channel B digital output bit 9 (MSB) |
| 引脚 4 | D8B — Channel B digital output bit 8 |
| 引脚 5 | D7B — Channel B digital output bit 7 |
| 引脚 6 | D6B — Channel B digital output bit 6 |
| 引脚 7 | D5B — Channel B digital output bit 5 |
| 引脚 8 | D4B — Channel B digital output bit 4 |
| 引脚 9 | D3B — Channel B digital output bit 3 |
| 引脚 10 | D2B — Channel B digital output bit 2 |
| 引脚 11 | D1B — Channel B digital output bit 1 (LSB) |
| 引脚 12 | D0B — Channel B digital output bit 0 |
| 引脚 13 | OVDD — Output driver supply (3V) |
| 引脚 14 | OGND — Output driver ground |
| 引脚 15 | CLKOUTB — Channel B clock output (for data synchronization) |
| 引脚 16 | OFCHB — Channel B output format / clock select |
| 引脚 17 | CLKOUTA — Channel A clock output |
| 引脚 18 | OFCHA — Channel A output format / clock select |
| 引脚 19 | OVDD — Output driver supply |
| 引脚 20 | D0A — Channel A digital output bit 0 (LSB) |
| 引脚 21 | D1A — Channel A digital output bit 1 |
| 引脚 22 | D2A — Channel A digital output bit 2 |
| 引脚 23 | D3A — Channel A digital output bit 3 |
| 引脚 24 | D4A — Channel A digital output bit 4 |
| 引脚 25 | D5A — Channel A digital output bit 5 |
| 引脚 26 | D6A — Channel A digital output bit 6 |
| 引脚 27 | D7A — Channel A digital output bit 7 |
| 引脚 28 | D8A — Channel A digital output bit 8 |
| 引脚 29 | D9A — Channel A digital output bit 9 (MSB) |
| 引脚 30 | OGND — Output driver ground |
| 引脚 31 | AVDD — Analog supply (3V) |
| 引脚 32 | GND — Ground |
| 引脚 33 | VREF — Voltage reference bypass |
| 引脚 34 | SENSE — Reference voltage sense pin |
| 引脚 35 | GND — Ground |
| 引脚 36 | GND — Ground |
| 引脚 37 | IN+A — Channel A positive analog input |
| 引脚 38 | IN-A — Channel A negative analog input |
| 引脚 39 | GND — Ground |
| 引脚 40 | GND — Ground |
| 引脚 41 | IN+B — Channel B positive analog input |
| 引脚 42 | IN-B — Channel B negative analog input |
| 引脚 43 | GND — Ground |
| 引脚 44 | GND — Ground |
| 引脚 45 | CLK+ — Clock input positive |
| 引脚 46 | CLK- — Clock input negative |
| 引脚 47 | GND — Ground |
| 引脚 48 | AVDD — Analog supply |
| 引脚 49 | AVDD — Analog supply |
| 引脚 50 | GND — Ground |
| 引脚 51 | MODE — Mode select pin |
| 引脚 52 | GND — Ground |
| 引脚 53 | SHUTDN — Shutdown (active high) |
| 引脚 54 | GND — Ground |
| 引脚 55 | AVDD — Analog supply |
| 引脚 56 | NC — Not connected (per datasheet) |
| 引脚 57 | NC — Not connected (per datasheet) |
| 引脚 58 | AVDD — Analog supply |
| 引脚 59 | GND — Ground |
| 引脚 60 | GND — Ground |
| 引脚 61 | AVDD — Analog supply |
| 引脚 62 | AVDD — Analog supply |
| 引脚 63 | AVDD — Analog supply |
| 引脚 64 | AVDD — Analog supply |
典型应用
LTC2288IUP 适用于 6 应用s: Cellular Base Station Receiver, Digital Predistortion Feedback Path, Software-Defined Radio IF Sampling, Medical Imaging Front-End, High-Speed Data Acquisition, Portable Test & Measurement.
Cellular Base Station Receiver
The LTC2288IUP is well-suited for cellular base station receiver IF sampling due to its dual matched 10-bit channels (61 dB SNR at 14 MHz) and 65 Msps speed. It can digitize two IF or I/Q baseband streams simultaneously, simplifying PCB layout and eliminating channel-mismatch errors inherent in two-chip solutions. Typical usage places the LTC2288IUP after the final IF mixer with anti-alias filtering, while a clean LT1761 LDO powers AVDD. The 64-QFN EP package offers low thermal resistance, ensuring reliable operation across the industrial -40C to +85C temperature range in outdoor-mounted base-station equipment.
推荐
Digital Predistortion Feedback Path
In DPD (digital predistortion) feedback paths for power amplifier linearization, the LTC2288IUP's 65 Msps sample rate captures wideband PA output signals with 10-bit resolution and 61 dB SNR. The dual channels sample both the input reference and the PA output, enabling accurate distortion cancellation. Its 3V supply aligns with typical transceiver rails, and the 64-QFN EP exposed pad enables compact layout near the modulator. The pipelined architecture and parallel CMOS output integrate cleanly with FPGA-based predistortion engines, providing a deterministic two-clock latency pipeline delay.
推荐
Software-Defined Radio IF Sampling
The LTC2288IUP enables direct IF sampling in software-defined radio (SDR) platforms where dual-channel digitizing of I/Q baseband or real-IF signals at 14 MHz is required. With 250 MHz analog input bandwidth, the device can undersample IF frequencies up to several hundred MHz while delivering 61 dB SNR. The dual matched channels remove gain and offset imbalance between I and Q paths - critical for modulation accuracy. Low-voltage 3V operation suits battery-powered tactical and portable SDR systems, and the 64-QFN EP footprint allows dense PCB packing alongside FPGAs.
推荐
Medical Imaging Front-End
In ultrasound and medical imaging front-ends, the LTC2288IUP's dual channels simultaneously digitize two transducer receive paths at 65 Msps with 10-bit resolution. Its 61 dB SNR captures the dynamic range of returning echoes while keeping power low enough for portable cart-based systems. The industrial temperature grade supports operating-room and field-hospital environments. The 64-QFN EP package enables the dense multi-channel arrays required by modern ultrasound probes, where 16, 32, or 64 channels are typically stacked with shared clock distribution.
推荐
High-Speed Data Acquisition
The LTC2288IUP is ideal for industrial data-acquisition modules sampling two sensor streams simultaneously at 65 Msps. With 10-bit resolution and 61 dB SNR, it captures vibration, sonar, and radar return signals with adequate dynamic range. The 3V supply integrates with industrial 3.3V logic levels, and the 64-QFN EP package withstands industrial -40C to +85C environments. The pipelined architecture provides one-sample-per-clock throughput after pipeline fill, simplifying FIFO interfacing to DSPs and FPGAs in real-time signal-processing pipelines.
推荐
Portable Test & Measurement
The LTC2288IUP fits portable oscilloscope and spectrum-analyzer front-ends where dual-channel 65 Msps sampling with 10-bit resolution enables time-domain and frequency-domain measurements. Its 250 MHz analog input bandwidth supports direct probing of signals up to 100 MHz without an external amplifier. Low-voltage 3V operation extends battery runtime for handheld instruments, and the 64-QFN EP footprint leaves board area for display drivers and user-interface MCUs. The dual matched channels simplify differential probing and trigger-source coupling in mid-range oscilloscope designs.
推荐
推荐产品汇总
工程参考数据： LTC2288IUP ——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 | LTC2287IUP | LTC2286IUP | LTC2288CUP | LTC2288IUP#PBF |
|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 64-QFN (9x9 mm) | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same |
| Resolution | 10 bit | 10 bit | 10 bit | 10 bit | 10 bit |
| Sample Rate | 65 Msps | 40 Msps | 25 Msps | 65 Msps | 65 Msps |
| Number of Channels | 2 (dual) | 2 (dual) | 2 (dual) | 2 (dual) | 2 (dual) |
| Supply Voltage | 2.85V to 3.4V | 2.85V to 3.4V | 2.85V to 3.4V | 2.85V to 3.4V | 2.85V to 3.4V |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | 0C to +70C (Commercial) | -40C to +85C |
| RoHS Compliant | Non-PBF (tape & reel) | Non-PBF | Non-PBF | Non-PBF | Yes (PBF suffix) |
| Architecture | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined |
关键差异点
- Highest speed grade in the LTC2286/LTC2287/LTC2288 family at 65 Msps （对比 LTC2287IUP)
- Industrial temperature grade -40C to +85C operation （对比 LTC2288CUP)
- Dual matched channels in a single 64-QFN package （对比 LTC2282CUP)
- Drop-in pin compatibility with the LTC2287 and LTC2286 families （对比 LTC2280CUP)
设计说明
Estimated: with a 3V supply at 65 Msps the LTC2288IUP draws approximately 150 mA total, dissipating roughly 0.45 W through the 64-QFN exposed pad. Place multiple thermal vias (9-12 recommended, 0.3 mm drill) under the EP to a continuous ground pour on layer 2 to keep junction-to-ambient thermal resistance near 28 C/W, preventing thermal shutdown in continuous industrial-temperature operation.
Estimated: each AVDD pin requires a 0.1 uF ceramic bypass capacitor placed within 2 mm of the pin and a 10 uF bulk tantalum or ceramic capacitor on each analog supply rail. Use a low-noise 3V LDO such as the LT1761 (20 uVrms noise) to feed AVDD from a 5V or 12V upstream rail. Power AVDD and OVDD from separate LDO rails and decouple them at the device entry to minimize digital switching noise coupling into the analog front end.
Estimated: route analog inputs (IN+A, IN-A, IN+B, IN-B) as a tightly-coupled differential pair with 100 ohm differential impedance and length matching within 0.5 mm to preserve SNR. Use a ground plane directly under the analog traces and avoid routing digital outputs beneath the analog input section. Place an anti-alias RC filter (typically 50 ohm series, 10 pF shunt) within 5 mm of each analog input pin to limit wideband noise folding into the baseband.
Do not leave the SENSE pin floating - tie it to VREF through a 10 kohm resistor and bypass VREF with a 10 uF capacitor to ground for proper internal reference operation. Drive the CLK+ and CLK- pins with a low-jitter differential clock (jitter < 1 ps RMS) for full 61 dB SNR performance; single-ended clock operation is supported but degrades SNR by approximately 2-3 dB. Tie unused digital outputs (D0A-D9A, D0B-D9B) to OGND through 10 kohm resistors if not all bits are used by the downstream FPGA.
合规信息
RoHS compliant per #PBF suffix designation. Non-automotive grade - for AEC-Q100 qualified alternatives, consider the LTC2288IUP automotive variants if available. REACH compliance per Analog Devices product declarations.
