ADS5422Y/1K5 - 14-Bit 62MSPS Pipeline ADC | Texas Instruments
料号： ADS5422Y/1K5 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $28.5 | $28.50 |
| 10 | $26.2 | $262.00 |
| 100 | $23.95 | $2,395.00 |
| 500 | $21.4 | $10,700.00 |
| 1,000 | $19.6 | $19,600.00 |
ADS5422Y/1K5 概述
An analog-to-digital converter (ADC) is a mixed-signal semiconductor that translates continuous analog voltages into discrete digital codes, forming the bridge between the analog and digital domains in modern electronic systems. Pipeline ADCs specifically use a multi-stage architecture where each stage samples, holds, and converts a coarse sub-code, with redundancy correcting inter-stage gain/offset errors. The pipeline topology achieves excellent throughput-to-power efficiency, making it the workhorse architecture for sampling rates from a few MSPS to several hundred MSPS in applications such as communications, instrumentation, and radar.
The ADS5422Y/1K5 features differential analog inputs that suppress even-order harmonic distortion and allow selectable full-scale input ranges via an internal reference. Its high spurious-free dynamic range (SFDR) and high signal-to-noise ratio (SNR) at 10 MHz input make it well suited for wideband IF sampling, while the differential clock input accepts low-level sinusoids, improving the ADC's aperture jitter tolerance. The integrated track-and-hold preserves high linearity across the Nyquist bandwidth, enabling direct sampling at IF frequencies.
Architecturally, the ADS5422Y/1K5 combines a wideband linear track-and-hold front end, a multi-stage switched-capacitor pipeline core, and CMOS-compatible digital outputs. Internal bandgap references and trimming registers calibrate gain and offset on-chip, removing the need for external precision references while still allowing the user to overdrive the input common-mode for maximum SFDR optimization.
Typical applications include communications receivers (GSM/EDGE/TDMA base-station IF digitizing), radar and lidar digitizers, medical imaging front ends (ultrasound beamformers), cable-headend modulators, and high-speed data-acquisition systems for test and measurement. The industrial temperature grade of -40C to +85C covers the majority of outdoor and industrial deployments.
When using this ADC, allocate careful PCB routing for the analog and digital grounds as well as bypass-capacitor placement; bypassing AVDD with a 10 uF ceramic plus a 0.1 uF HF capacitor within 5 mm of each pin minimizes spurs. Ensure the encode clock source has low jitter, ideally below 0.5 ps RMS, to preserve SNR at high input frequencies.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that complement the Texas Instruments datasheet without duplicating it.
直接替换替代料： ADS5422Y/1K5 ——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： ADS5422Y/1K5 （相同外形与封装尺寸） ——差异在于 Clock Input, Package Code.
快速对比工具——选择替代料号进行并排对比：
ADS5422Y/250
✅ 直接替换📋 参考替代料（不在目录中）
ADS5422Y/250G4
✅ 直接替换📋 参考替代料（不在目录中）
ADS5422Y/1K5G4
✅ 直接替换✓ 有现货
$11.45 / 个
查看数据手册 →ADS5422Y
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ADS5422Y/250G4G4
✅ 直接替换📋 参考替代料（不在目录中）
ADS5422Y/1K5 最大额定值与电气特性
| 分辨率 | 14 bit |
| Number of Channels | 1 |
| Architecture | Pipelined |
| Sample Rate (Maximum) | 62 MSPS |
| Analog Input Type | Differential |
| 封装 | 64-LQFP (10x10 mm) |
| 引脚数 | 64 |
| Selectable Full-Scale Input | Yes (internal reference ranges selectable) |
| Clock Input | Differential or single-ended; accepts sine or square wave |
| Minimum Clock Input Level | 0.5 VPP |
| Track-and-Hold Amplifier | Premium linear THA at front end |
| 工作温度范围 | -40C to +85C |
| Temperature Grade | Industrial |
| 安装类型 | Surface Mount |
| Terminal Form | Gull Wing |
| Package Code | LFQFP / LQFP-64 |
| Output Format | CMOS-compatible parallel |
| RoHS 状态 | Compliant |
ADS5422Y/1K5 lfqfp / lqfp-64 引脚配置指南
ADS5422Y/1K5（lfqfp / lqfp-64 封装）的引脚配置。 该模拟元件具有输入、输出和电源引脚。请参阅制造商数据手册以了解失调调零、补偿和使能引脚配置。适用于信号调理和放大器电路。
暂无详细引脚数据： ADS5422Y/1K5.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ADS5422Y/1K5 适用于 6 应用s: Communications IF Sampling Receiver, Radar and Lidar Digitizer Front End, Medical Ultrasound Beamformer, Cable Headend / Broadband Modulator, High-Speed Data Acquisition (Test & Measurement), Software-Defined Radio (SDR) Baseband Digitizer.
Communications IF Sampling Receiver
The ADS5422Y/1K5 is ideally matched to digitize intermediate-frequency (IF) signals in communications base-station receivers thanks to its 14-bit resolution and 62 MSPS throughput. Its differential input structure with selectable full-scale range rejects even-order harmonics, allowing the designer to position the IF at 10-30 MHz where SFDR remains high. Placed after a SAW filter and IF amplifier, the ADC digitizes narrow-band GSM/EDGE/TDMA channels with the SNR needed for demodulator synchronization, and the LQFP-64 thermal envelope keeps junction temperatures within safe limits during continuous reception.
推荐
Radar and Lidar Digitizer Front End
In radar and lidar front-end electronics, the ADS5422Y/1K5's 62 MSPS sampling rate gives a Nyquist bandwidth sufficient for digitizing wideband chirp returns at intermediate frequencies. The on-chip premium track-and-hold preserves linearity at full input bandwidth, allowing the designer to place the ADC directly behind the IF mixer without an external THA. The differential clock input accepts low-jitter sine or square waveforms from a radar timing generator, and the 64-LQFP (10x10 mm) footprint is rugged enough for industrial-grade -40C to +85C temperature operation. Overall, the converter delivers the SFDR needed to resolve small targets against clutter.
推荐
Medical Ultrasound Beamformer
Ultrasound beamforming arrays demand wideband, high-dynamic-range ADCs to digitize amplified transducer returns before digital delay-and-sum beamforming. The ADS5422Y/1K5's 14-bit / 62 MSPS capability captures the 10-30 MHz content of typical abdominal and cardiac probes while preserving the dynamic range needed to discriminate tissue boundaries. Its differential inputs reject common-mode noise from piezoelectric pickup, and the LQFP-64 footprint lays out cleanly on the high-density multi-channel receiver boards used in ultrasound carts. The industrial temperature grade supports reliable operation in warm clinical equipment enclosures.
推荐
Cable Headend / Broadband Modulator
Cable-TV headend modulators and broadband QAM upconverters require linear, high-SFDR digitizers that can be driven directly by IF outputs from upstream modulators. The ADS5422Y/1K5's differential input architecture with selectable full-scale range accommodates the variable signal levels common in headend equipment. At 62 MSPS it can oversample the IF carrier with comfortable margin, easing the analog anti-alias filter design. Its industrial temperature range and surface-mount LQFP-64 footprint simplify integration into high-density rack-mounted headend chassis.
推荐
High-Speed Data Acquisition (Test & Measurement)
Bench-top and rack-mounted oscilloscope-style data acquisition systems benefit from the ADS5422Y/1K5's 14-bit resolution and 62 MSPS throughput to capture transient waveforms for offline analysis. Its high SFDR preserves harmonic content of the recorded signal, allowing accurate FFT-based measurements in test instruments, while the differential inputs allow direct connection to active probes. The internal selectable full-scale input range and clocking flexibility simplify the front-end design of a multi-channel digitizer chassis, and the LQFP-64 package provides good thermal performance for densely populated backplanes.
推荐
Software-Defined Radio (SDR) Baseband Digitizer
Software-defined radio platforms use the ADS5422Y/1K5 to digitize baseband or low-IF signals after the analog quadrature demodulator. With 14-bit resolution and 62 MSPS sampling, it captures the full bandwidth of wideband waveforms used in cognitive radio, spectrum monitoring, and amateur SDR receivers. The differential analog inputs reject switching noise from nearby digital circuitry, and the 64-LQFP footprint is easy to route on the mixed-signal SDR motherboard. The industrial temperature grade supports outdoor remote SDR deployments such as spectrum-monitoring nodes.
推荐
推荐产品汇总
工程参考数据： ADS5422Y/1K5 ——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 | ADS5422Y/250 | ADS5422Y/250G4 | ADS5422Y/1K5G4 | ADS5422Y |
|---|---|---|---|---|---|
| Package | LQFP-64 (10x10 mm) | LQFP-64 (10x10) - same | LQFP-64 (10x10) - same | LQFP-64 (10x10) - same | LQFP-64 (10x10) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 14 bit | 14 bit | 14 bit | 14 bit | 14 bit |
| Maximum Sample Rate | 62 MSPS | 62 MSPS | 62 MSPS | 62 MSPS | 62 MSPS |
| Architecture | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined |
| Number of Channels | 1 | 1 | 1 | 1 | 1 |
| Operating Temperature Range | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Reel Quantity | 1500 | 250 | 250 | 1500 | Tray or no reel designation |
| Pb-Free / RoHS | RoHS Compliant | RoHS Compliant | RoHS Compliant (G4 finish) | RoHS Compliant (G4 finish) | RoHS Compliant |
关键差异点
- Same silicon, broader reel-quantity offering within TI catalog （对比 ADS5422Y/250)
- Pb-free green finish for industry-standard RoHS programs （对比 ADS5422Y/1K5G4)
- Differential clock input down to 0.5 VPP - cleaner SNR than single-ended-only ADCs in this class （对比 ADS5422Y/250G4)
设计说明
Partition the PCB into dedicated analog, digital, and ground regions with the ADS5422Y/1K5 straddling the analog/digital boundary. Route the differential analog inputs as a tightly-coupled pair (matched length within 0.5 mm) and place a 10 uF ceramic + 0.1 uF HF bypass on each AVDD pin within 5 mm. Keep the ENCODE clock traces short and guarded by ground pours to limit aperture-jitter coupling into the analog front end. Severity: critical.
Estimated: the ADS5422Y/1K5 analog front end draws on the order of 200-400 mW from AVDD depending on clock rate; total supply power including digital I/O can approach 1 W at 62 MSPS. Use a low-noise LDO (such as TPS7A4701) for the AVDD rail, and isolate the digital supplies via ferrite beads plus a separate 1.8/3.3 V regulator. Add bulk capacitance (>= 47 uF) at the regulator output to absorb transient current spikes on the encode-clock edge. Severity: critical.
Drive the clock input differentially with a low-jitter source (target < 0.5 ps RMS) for the best SNR at high input frequencies; a single-ended CMOS clock is acceptable but degrades even-order harmonics. Terminate the digital CMOS outputs with series 33 ohm resistors to limit overshoot, especially when the bus is longer than 25 mm. Use a dedicated data-capture FPGA with matched propagation delay on its data strobe to avoid capture errors. Severity: recommended.
Do not operate the ADS5422Y/1K5 with any analog input common-mode outside the datasheet range; this degrades SFDR substantially and may latch the device. Avoid driving the analog input before the encode clock is stable, as this disrupts internal bias networks. Finally, do not neglect decoupling on the DRVDD pins - missing DRVDD decoupling is a frequent root cause of elevated DNL in production units. Severity: critical.
合规信息
RoHS-compliant per TI product page and DigiKey listing. Industrial temperature grade (not automotive AEC-Q100). Confirm halogen-free status with TI material declaration if required.
