PADC34J25IRGZT - Quad 12-Bit 160MSPS ADC, JESD204B | Texas Instruments
料号： PADC34J25IRGZT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $32.5 | $32.50 |
| 10 | $28.95 | $289.50 |
| 100 | $24.5 | $2,450.00 |
| 500 | $20.1 | $10,050.00 |
| 1,000 | $17.85 | $17,850.00 |
PADC34J25IRGZT 概述
An analog-to-digital converter (ADC) is a data converter integrated circuit that transforms continuous analog signals into discrete digital codes for processing by FPGAs, ASICs, or microcontrollers. The PADC34J25 belongs to the high-speed ADC family within the data acquisition semiconductor category, which sits hierarchically under signal chain -> data conversion -> analog-to-digital converter. It uses a pipelined architecture that enables high sample rates with low latency while maintaining good dynamic performance for intermediate-frequency signals.
Key features include four simultaneously-sampling differential input channels, an integrated high-bandwidth track-and-hold, JESD204B deterministic latency and multi-device synchronization, on-chip dither for improved SFDR at low input frequencies, and digital features such as per-channel gain and offset correction. The JESD204B interface reduces board routing complexity compared to LVDS by serializing data into 1-4 lanes running at up to 3.2 Gbps each, simplifying PCB layout for high-channel-count systems.
The converter operates from a 1.8V analog supply and 1.8V digital supply, with a separate 1.8V clock supply. It accepts differential analog inputs with a full-scale range selectable through an external reference. A built-in decimation filter and digital down-converter option support multi-band receiver architectures, while the SYNC~ and SYSREF~ inputs enable deterministic latency for phased-array beamforming and MIMO systems.
Typical applications include multi-channel software-defined radio receivers, multi-antenna base station signal chains, LTE and 5G small-cell RF sampling, phased-array radar, broadband communication test equipment, and high-speed industrial digitizers. The four matched channels make the device especially attractive for I/Q digitization and diversity receivers where channel-to-channel matching directly impacts beamforming accuracy.
When designing with this ADC, ensure the JESD204B link parameters (L, M, F, K) are configured in software before the converter enters data conversion. Decoupling on each supply pin with 100 nF and 10 uF ceramic capacitors placed within 5 mm of the pins minimizes noise coupling into the analog front end.
This page synthesizes distributor pricing, JESD204B drop-in alternatives, and practical design notes for multi-channel RF digitizers not consolidated in a single manufacturer source.
直接替换替代料： PADC34J25IRGZT ——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： PADC34J25IRGZT （相同外形与封装尺寸） ——差异在于 Input Type, Number of Channels, Output Interface, Package, Resolution.
快速对比工具——选择替代料号进行并排对比：
ADC34J25IRGZT
✅ 直接替换📋 参考替代料（不在目录中）
PADC3444IRTQT
✅ 直接替换✓ 有现货
$35.6 / 个
查看数据手册 →PADC34J25IRGZT 最大额定值与电气特性
| 分辨率 | 12 bit |
| Number of Channels | 4 |
| Sample Rate | 160 MSPS |
| Architecture | Pipelined |
| Input Type | Differential |
| Output Interface | JESD204B |
| Number of JESD204B Lanes | 1 to 4 lanes |
| 封装 | 48-VQFN (RGZ) 7x7 mm with exposed pad |
| 工作温度范围 | -40C to +85C |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
| 电源电压 | 1.8 V (analog, digital, clock) |
| Reference Type | External, programmable |
| Lead-Free | Yes |
PADC34J25IRGZT 48-vqfn (rgz) 7x7 mm with exposed pad 引脚配置指南
PADC34J25IRGZT（48-vqfn (rgz) 7x7 mm with exposed pad 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： PADC34J25IRGZT.
请参阅 数据手册 以查看完整引脚配置。
典型应用
PADC34J25IRGZT 适用于 6 应用s: Multi-Channel Software-Defined Radio Receiver, LTE and 5G Small-Cell Base Station Signal Chain, Phased-Array Radar Digitizer, Broadband Communication Test and Measurement Equipment, High-Speed Multi-Channel Industrial Digitizer, Medical Imaging and Ultrasound Front End.
Multi-Channel Software-Defined Radio Receiver
The PADC34J25IRGZT's four simultaneously-sampling 160 MSPS channels with JESD204B deterministic latency make it ideal for multi-channel SDR receivers where I/Q pairs from multiple antennas must be sampled in lockstep. According to TI design guidance, the four matched channels preserve amplitude and phase balance required for coherent beamforming and direction-finding. Placed at the IF output of the analog front end with a 10 uF/100 nF decoupling network on each 1.8V supply pin, the converter outputs serialized data over JESD204B lanes directly to an FPGA processor. Unlike parallel LVDS ADCs, this device reduces board area by approximately 60 percent and simplifies FPGA pin allocation, trading a more complex link initialization for cleaner signal integrity.
推荐
LTE and 5G Small-Cell Base Station Signal Chain
The PADC34J25IRGZT supports LTE and sub-6 GHz 5G small-cell RF sampling by digitizing up to four diversity or MIMO antenna streams at 160 MSPS each, preserving the channel-to-channel matching required for multi-antenna processing. According to TI infrastructure application notes, the JESD204B interface enables direct connection to baseband SoCs and FPGAs with multi-gigabit transceivers. With 1.8V operation and 7x7 mm VQFN footprint, the converter fits dense small-cell PCB layouts where thermal dissipation is constrained. Per-channel digital gain and offset correction integrated in the device simplify calibration routines.
推荐
Phased-Array Radar Digitizer
In phased-array radar systems, the PADC34J25IRGZT provides four simultaneous 160 MSPS sampling channels with deterministic latency through JESD204B subclass 1 SYNC~ and SYSREF~ synchronization. According to TI radar design documentation, this synchronization allows multiple ADCs across the array to maintain sample-accurate timing for coherent beam steering. The pipelined architecture delivers low conversion latency, enabling closed-loop adaptive beamforming. Designers place the ADC close to the antenna front end with matched-length differential routing to preserve phase relationships across channels.
推荐
Broadband Communication Test and Measurement Equipment
The PADC34J25IRGZT's 12-bit resolution and 160 MSPS per channel make it suitable for broadband test and measurement instruments including vector signal analyzers, spectrum analyzers, and signal generators that require multi-channel IF digitization. According to TI instrumentation references, the four matched channels support simultaneous capture of I/Q pairs, simplifying instrument architecture. The JESD204B interface allows the FPGA DSP to receive data with deterministic latency, critical for trigger synchronization in oscilloscope and transient capture applications.
推荐
High-Speed Multi-Channel Industrial Digitizer
For industrial digitizers and condition-monitoring systems, the PADC34J25IRGZT delivers four simultaneous 160 MSPS channels in a compact 7x7 mm VQFN package, enabling dense multi-sensor data acquisition. According to TI industrial design references, the 1.8V low-power operation suits thermally-constrained enclosures. The per-channel gain and offset correction supports transducer calibration at the digitizer level, eliminating external analog trimming. JESD204B output reduces connector pin count, allowing smaller form-factor modules with the same channel count as legacy LVDS architectures.
推荐
Medical Imaging and Ultrasound Front End
The PADC34J25IRGZT suits medical imaging front ends including ultrasound beamforming where multiple receive channels must be sampled simultaneously at IF frequencies. According to TI medical imaging documentation, the four-channel simultaneous sampling at 160 MSPS enables real-time beamformer data acquisition, while JESD204B deterministic latency preserves phase coherence across channels critical for image reconstruction. Low 1.8V power consumption simplifies thermal management in cart-based and portable ultrasound systems.
推荐
推荐产品汇总
工程参考数据： PADC34J25IRGZT ——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 | ADC34J25IRGZT | PADC3444IRTQT |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 48-VQFN (RGZ) 7x7 mm | 48-VQFN (RGZ) 7x7 mm - same | QFN-56 equivalent (see note) |
| Resolution | 12 bit | 12 bit | 14 bit |
| Sample Rate | 160 MSPS | 160 MSPS | 80 MSPS |
| Number of Channels | 4 | 4 | 4 |
| Output Interface | JESD204B | JESD204B | JESD204B |
| Supply Voltage | 1.8 V | 1.8 V | 1.8 V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C |
关键差异点
- Four simultaneously-sampled channels with JESD204B interface （对比 PADC3444IRTQT)
- Pipelined architecture for low conversion latency （对比 Generic 12-bit SAR ADC)
- Industrial temperature range with JESD204B deterministic latency （对比 Commercial-grade quad ADC)
设计说明
Place 100 nF and 10 uF ceramic decoupling capacitors within 5 mm of each 1.8V supply pin (AVDD, DRVDD, CLVDD) on the PADC34J25IRGZT. According to TI JESD204B layout guidelines, use a continuous ground plane under the ADC and route differential analog inputs with 100 ohm controlled impedance. The exposed thermal pad must be soldered to a copper island with multiple thermal vias to a ground plane for heat dissipation. Keep digital JESD204B lane traces length-matched within the lane pair and routed over a continuous reference plane to maintain 3.2 Gbps signal integrity.
Configure the JESD204B link parameters L (lanes), M (converters), F (octets per frame), and K (frames per multiframe) in software before the PADC34J25IRGZT enters data conversion. According to TI JESD204B documentation, use subclass 1 with SYSREF~ for deterministic latency when synchronizing multiple ADCs in phased-array systems. The SYSREF~ signal must be edge-aligned to the device clock for proper setup/hold; route SYSREF~ with the same length as the device clock to maintain timing margin.
Do not omit the external reference decoupling on the PADC34J25IRGZT reference pin; reference noise directly couples into sample-to-sample variability. According to TI ADC reference design guidance, use a low-noise LDO such as the TPS7A47 for the AVDD supply to avoid degrading SNR. Verify the JESD204B serial link reaches CGS (code group synchronization) and ILAS (initial lane alignment sequence) before issuing the data enable bit, otherwise the FPGA will read invalid frames.
合规信息
RoHS and lead-free confirmed via TI product page. Halogen-free status not explicitly stated in verified web data; set to unknown. Not AEC-Q100 qualified - this part is industrial-grade only; for automotive applications select an AEC-Q100 qualified TI ADC.
