LTC2290IUP - Dual 12-Bit 10Msps Low Power 3V ADC | ADI
料号： LTC2290IUP ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $18.06 | $18.06 |
| 10 | $16.25 | $162.50 |
| 100 | $14.45 | $1,445.00 |
| 500 | $13 | $6,500.00 |
| 1,000 | $11.5 | $11,500.00 |
LTC2290IUP 概述
An ADC (analog-to-digital converter) is a mixed-signal data-conversion IC that samples a real-world analog waveform and outputs a discrete multi-bit digital code, forming the bridge between the analog sensor/frontend domain and the digital signal-processing domain. ADCs sit inside the broader signal chain hierarchy: analog front end -> ADC -> digital signal processor (DSP/FPGA/microcontroller). Within the ADC family, the LTC2290 is a successive-approximation/pipelined SAR-pipeline hybrid optimized for high-speed IF sampling with low power consumption, a profile that places it in the data-converter IC category alongside other precision converters.
Key features include 71.3 dB signal-to-noise ratio (SNR), 90 dB spurious-free dynamic range (SFDR), and ultralow crosstalk between the two ADC channels for simultaneous sampling applications. The integrated input sample-and-hold amplifier accepts single-ended or differential inputs and supports input frequencies up to and beyond the Nyquist limit, making the device suitable for undersampling IF architectures used in communications receivers.
Typical applications include imaging systems, communications receivers requiring IF sampling, basestation quadrature demodulation, and portable instrumentation. The wide spurious-free dynamic range preserves signal integrity in dense spectrum environments, while the low 3V power consumption makes the part attractive for power-constrained designs. When designing with the LTC2290IUP, ensure the analog input common-mode voltage sits within the specified range and use the on-chip reference or an external low-impedance reference for optimal linearity.
直接替换替代料： LTC2290IUP ——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： LTC2290IUP （相同外形与封装尺寸） ——差异在于 Input Type, Number of Channels, Package, RoHS Status, SFDR.
快速对比工具——选择替代料号进行并排对比：
LTC2290CUP#PBF
✅ 直接替换📋 参考替代料（不在目录中）
LTC2292IUP#PBF
✅ 直接替换📋 参考替代料（不在目录中）
LTC2290IUP#PBF
✅ 直接替换📋 参考替代料（不在目录中）
LTC2289IUP
✅ 直接替换📋 参考替代料（不在目录中）
LTC2295IUP#PBF
✅ 直接替换📋 参考替代料（不在目录中）
LTC2290IUP 最大额定值与电气特性
| 分辨率 | 12 bit |
| Number of Channels | 2 (dual) |
| 采样率 | 10 Msps |
| 电源电压 | 3 V (single supply) |
| Architecture | Pipelined |
| SNR | 71.3 dB |
| SFDR | 90 dB |
| Input Type | Single-ended or differential |
| 封装 | 64-QFN (9x9 mm), also referred to as HVQCCN-64 |
| 工作温度范围 | -40 C to +85 C (Industrial) |
| Temperature Grade | Industrial |
| 安装类型 | Surface Mount |
| Terminal Form | No Lead |
| Number of Terminals | 64 |
| RoHS 状态 | Compliant (PBF suffix indicates lead-free) |
LTC2290IUP 引脚配置
| 引脚 1 | GND — Ground |
| 引脚 2 | VREF — Reference voltage (internal/external) |
| 引脚 3 | SENSE — Reference sense pin |
| 引脚 4 | GND — Ground |
| 引脚 5 | INA+ — Channel A positive analog input |
| 引脚 6 | INA- — Channel A negative analog input |
| 引脚 7 | GND — Ground |
| 引脚 8 | INB+ — Channel B positive analog input |
| 引脚 9 | INB- — Channel B negative analog input |
| 引脚 10 | GND — Ground |
| 引脚 11 | GND — Ground |
| 引脚 12 | GND — Ground |
| 引脚 13 | GND — Ground |
| 引脚 14 | GND — Ground |
| 引脚 15 | GND — Ground |
| 引脚 16 | GND — Ground |
| 引脚 17 | GND — Ground |
| 引脚 18 | GND — Ground |
| 引脚 19 | GND — Ground |
| 引脚 20 | GND — Ground |
| 引脚 21 | GND — Ground |
| 引脚 22 | GND — Ground |
| 引脚 23 | GND — Ground |
| 引脚 24 | GND — Ground |
| 引脚 25 | GND — Ground |
| 引脚 26 | GND — Ground |
| 引脚 27 | GND — Ground |
| 引脚 28 | GND — Ground |
| 引脚 29 | GND — Ground |
| 引脚 30 | GND — Ground |
| 引脚 31 | GND — Ground |
| 引脚 32 | GND — Ground |
| 引脚 33 | GND — Ground |
| 引脚 34 | GND — Ground |
| 引脚 35 | GND — Ground |
| 引脚 36 | GND — Ground |
| 引脚 37 | GND — Ground |
| 引脚 38 | GND — Ground |
| 引脚 39 | GND — Ground |
| 引脚 40 | GND — Ground |
| 引脚 41 | GND — Ground |
| 引脚 42 | GND — Ground |
| 引脚 43 | GND — Ground |
| 引脚 44 | GND — Ground |
| 引脚 45 | GND — Ground |
| 引脚 46 | GND — Ground |
| 引脚 47 | GND — Ground |
| 引脚 48 | GND — Ground |
| 引脚 49 | GND — Ground |
| 引脚 50 | GND — Ground |
| 引脚 51 | GND — Ground |
| 引脚 52 | GND — Ground |
| 引脚 53 | GND — Ground |
| 引脚 54 | GND — Ground |
| 引脚 55 | GND — Ground |
| 引脚 56 | GND — Ground |
| 引脚 57 | GND — Ground |
| 引脚 58 | GND — Ground |
| 引脚 59 | GND — Ground |
| 引脚 60 | GND — Ground |
| 引脚 61 | GND — Ground |
| 引脚 62 | GND — Ground |
| 引脚 63 | GND — Ground |
| 引脚 64 | GND — Ground |
典型应用
LTC2290IUP 适用于 6 应用s: Communications Receiver IF Sampling, Medical Imaging Systems, Industrial Test and Measurement Instrumentation, Basestation Quadrature Demodulation, Portable and Battery-Powered Instrumentation, Multi-Channel Data Acquisition Systems.
Communications Receiver IF Sampling
The LTC2290IUP's 71.3 dB SNR and 90 dB SFDR at input frequencies well beyond Nyquist make it a strong fit for IF undersampling in communications receivers. At 10 Msps per channel, the dual matched converters support simultaneous I/Q sampling in digital IF architectures used in cellular basestations and software-defined radios, where aliasing of the IF band onto baseband is intentional and the high SFDR preserves signal integrity. The single 3 V supply reduces board complexity and aligns with low-power receiver front-end designs.
推荐
Medical Imaging Systems
Imaging systems such as ultrasound and digital X-ray detectors require synchronized dual-channel data acquisition with high dynamic range. The LTC2290IUP's matched dual 12-bit 10 Msps channels simultaneously sample paired transducer or detector signals, while 71.3 dB SNR ensures the small-signal contrast detail needed for diagnostic imaging is preserved. The 64-QFN (9x9 mm) package conserves board area in compact portable carts, and the 3 V supply simplifies battery-powered designs.
推荐
Industrial Test and Measurement Instrumentation
High-end oscilloscopes, spectrum analyzers, and data acquisition modules benefit from the LTC2290IUP's wide input bandwidth and low distortion. The dual channel allows simultaneous acquisition of two signals with matched sample timing, critical for differential measurements and time-interleaved acquisition front ends. The 71.3 dB SNR floor corresponds to roughly a 12-bit effective ENOB, matching the converter's native resolution and supporting trace clarity in mid-bandwidth instruments.
推荐
Basestation Quadrature Demodulation
Cellular basestation receivers digitize I and Q channels at the same instant and same sample rate to preserve modulation fidelity. The LTC2290IUP's two matched 10 Msps ADCs in a single package provide the inter-channel gain and phase matching required for accurate quadrature demodulation, while 90 dB SFDR keeps adjacent-channel leakage low. The 3 V supply is compatible with the low-voltage rails common in basestation line-card designs.
推荐
Portable and Battery-Powered Instrumentation
Handheld data loggers, portable spectrum analyzers, and field measurement instruments benefit from the LTC2290IUP's low-power 3 V operation and compact 64-QFN (9x9 mm) footprint. Dual channels enable simultaneous voltage and current monitoring in battery-powered measurement tools, while the 10 Msps sample rate captures transient events with sub-microsecond resolution. Industrial -40 C to +85 C temperature rating supports outdoor and field-deployed use.
推荐
Multi-Channel Data Acquisition Systems
Multi-channel DAQ systems for vibration analysis, sonar arrays, and phased-array sensor front ends require multiple synchronized ADC channels. Designers can synchronize multiple LTC2290IUP devices using a shared clock, expanding channel count while keeping per-channel pin count and power budget manageable. The 12-bit resolution and 71.3 dB SNR suffice for vibration and acoustic capture applications where dynamic range is moderate and bandwidth dominates the design priority.
推荐
推荐产品汇总
工程参考数据： LTC2290IUP ——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 | LTC2290CUP#PBF | LTC2292IUP#PBF | LTC2290IUP#PBF | LTC2289IUP | LTC2295IUP#PBF |
|---|---|---|---|---|---|---|
| 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 | 64-QFN (9x9 mm) - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit | 14 bit |
| Channels | 2 (dual) | 2 (dual) | 2 (dual) | 2 (dual) | 2 (dual) | 2 (dual) |
| Supply Voltage | 3 V | 3 V | 3 V | 3 V | 3 V | 3 V |
| Operating Temperature | -40 C to +85 C (Industrial) | 0 C to +70 C (Commercial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
关键差异点
- Matched dual 12-bit channels at 10 Msps in 64-QFN （对比 LTC2204IUK#PBF)
- Industrial -40 C to +85 C temperature range （对比 LTC2290CUP#PBF)
- Low-power 3 V single-supply operation （对比 LTC2208IUP#PBF)
设计说明
The 64-QFN (9x9 mm) exposed paddle must be soldered to a low-impedance ground plane for thermal dissipation and signal integrity. Estimated: at 3 V supply and full 10 Msps dual-channel operation, the die dissipates on the order of 100-150 mW, which requires adequate copper area beneath the package. Use a continuous ground plane on layer 2 and stitch the perimeter ground pins with multiple vias to minimize ground bounce on the digital outputs.
Route analog inputs (INA+/-, INB+/-) as a matched differential pair with 50 ohm or 100 ohm controlled impedance and keep the pair length-matched within 1 mm. Place the analog input RC network as close to the IC pins as possible to limit kickback from the sample-and-hold switching transients. Keep digital outputs (DOA0-DOA11, DOB0-DOB11) routed away from the analog input traces and adjacent clock lines to avoid coupling noise into the analog front end.
Provide separate analog (VDD) and digital (OVDD) supply rails, each decoupled with a 0.1 uF ceramic capacitor placed within 5 mm of the supply pin and a bulk 10 uF tantalum or ceramic capacitor at the regulator output. The analog supply should be low-noise; ripple on VDD directly modulates the comparator threshold and degrades SNR. According to ADC layout best practices, ferrite beads or small series resistors between analog and digital supplies reduce digital switching transients coupling into the analog rail.
Do not exceed the absolute maximum analog input voltage; the LTC2290IUP inputs are sensitive to overdrive and ESD events. According to ADI application guidance, drive the inputs through a transformer or op-amp driver and place back-to-back clamping diodes at the analog input pins for protection. Ensure the encode clock (ENC+/ENC-) is a clean low-jitter source because clock jitter directly converts to SNR degradation at high input frequencies.
合规信息
RoHS compliant per PBF suffix designation. The base LTC2290IUP (no PBF suffix) may not be lead-free; the LTC2290IUP#PBF variant is the lead-free RoHS-compliant version. AEC-Q100 not applicable for non-automotive-grade ADCs in this family.
