ADS804U - 12-Bit 10-MSPS Parallel ADC | Texas Instruments
料号： ADS804U ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
ADS804U 概述
An ADC is an analog-to-digital converter, a data-acquisition IC that samples a continuous voltage and converts it into a numeric code for processing, storage, or transmission. The ADS804U belongs to the parallel-interface ADC family within the broader semiconductor and data-converter hierarchy. Its 12-bit resolution provides 4,096 code levels, while its 10-MSPS sampling rate supports high-speed waveform capture, IF and baseband digitization, CCD imaging, scanner systems, and test instrumentation.
Key performance characteristics combine 10-MSPS throughput with 12-bit resolution, 80-dB Nyquist SFDR, and 69-dB SNR. The flexible input range is useful when the source signal amplitude is not fixed, and the overrange indicator provides a way to detect conditions beyond the nominal conversion range. The ±0.3-LSB differential nonlinearity figure indicates that code-width variation is tightly controlled for precision acquisition and signal-fidelity requirements.
The ADS804U uses a parallel interface rather than a serial data interface. This architecture is appropriate when downstream logic can capture many output bits at each conversion event. Designers should account for timing between the sample clock, output data, and downstream logic, and should use controlled-impedance routing where digital transition activity could affect analog signal integrity. The 28-pin SOIC package provides a conventional surface-mount footprint but requires careful handling and layout because the analog input, reference connections, clock, and parallel outputs are all present in one package.
Typical applications include IF and baseband digitization, CCD imaging, scanners, communications receivers, and general-purpose test equipment. The 10-MSPS rate is especially relevant to intermediate-frequency or baseband sampling where a compact parallel ADC can feed a DSP, FPGA, or digital capture system. Compared with lower-speed converters, the ADS804U trades higher sampling throughput for greater PCB and timing complexity.
The most important design consideration is the analog and digital partitioning around the converter. Place input and reference components close to their associated pins, route the analog input away from high-current clock and parallel-output paths, and define the return-current path continuously. Check the manufacturer datasheet for the exact pin names, reference arrangement, timing specifications, and recommended application circuit before releasing a PCB layout.
This product page consolidates verified family specifications, package information, application guidance, and design considerations for engineers evaluating the ADS804U. Distributor inventory, exact pricing, lifecycle detail, and every complete electrical characteristic should be reconfirmed from the current manufacturer and distributor records before procurement or design sign-off.
直接替换替代料： ADS804U ——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： ADS804U （相同外形与封装尺寸） ——差异在于 Operating Temperature, Overrange Indicator, Package, Reference, Resolution.
快速对比工具——选择替代料号进行并排对比：
ADS804E/1KG4
✅ 直接替换📋 参考替代料（不在目录中）
ADS804U 最大额定值与电气特性
| 分辨率 | 12 bit |
| 采样率 | 10 MSPS |
| Number of Analog Inputs | 1 input |
| Data Interface | Parallel |
| Analog Input Range | 2 V to 5 Vpp |
| Spurious-Free Dynamic Range | 80 dB at Nyquist |
| Signal-to-Noise Ratio | 69 dB |
| Power Consumption | 180 mW |
| Differential Nonlinearity | ±0.3 LSB |
| Overrange Indicator | Yes |
| Reference | Internal or external reference |
| 封装 | 28-pin SOIC |
| Terminals | 28 terminals |
| 安装类型 | Surface mount |
| Temperature Grade | Industrial |
| 工作温度 | -40 °C to +85 °C |
| Package Code | SOP |
ADS804U sop 引脚配置指南
ADS804U（sop 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： ADS804U.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ADS804U 适用于 6 应用s: IF and Baseband Digitization, CCD Imaging Systems, Test and Measurement Instrumentation, Communications Receiver Front Ends, Scanner and Sensor Signal Acquisition, Digital Oscilloscope and Waveform Capture.
IF and Baseband Digitization
The ADS804U fits high-speed IF or baseband sampling because the verified device rate is 10 MSPS and its output is a 12-bit parallel interface. Place the converter after an appropriate anti-alias filter and gain stage, then capture the parallel result with a correctly timed FPGA, DSP, or data-acquisition logic. The 80-dB SFDR at Nyquist and 69-dB SNR are useful figures for evaluating dynamic performance, but the actual system result also depends on the input bandwidth, clock jitter, reference noise, and analog front end.
推荐
CCD Imaging Systems
ADS804U is suitable for CCD imaging signal chains where a single analog channel must be sampled at a controlled rate and delivered as parallel digital data. The 12-bit code width is appropriate for image or sensor analog quantization, while the 10-MSPS rate can support synchronized multi-channel systems when one converter is used per channel. Keep the sensor drive and converter supply paths separated where practical, and validate the input settling time, sampling clock return, and PCB leakage before using the full nominal sampling rate.
推荐
Test and Measurement Instrumentation
ADS804U can serve as the acquisition front end for oscilloscope-like, waveform, or laboratory measurement systems that need 10-MSPS sampling and 12-bit resolution. Its parallel output reduces the need to serialize the result before storage, provided the instrument FPGA or controller can meet the timing requirements. The approximately 180-mW converter power is a useful starting point for thermal planning, while the verified input range of 2 V to 5 Vpp requires a compatible attenuator or gain network for different probe amplitudes.
推荐
Communications Receiver Front Ends
ADS804U can be used in communications receivers that convert an intermediate-frequency or baseband waveform into parallel digital samples for downstream demodulation or filtering. The 10-MSPS rate gives sufficient throughput for many moderate-bandwidth IF/baseband paths, and the 12-bit resolution provides 4,096 quantization levels. In practice, the receiver must include gain control, anti-alias filtering, clock synthesis, and enough grounding to prevent converter and digital-logic noise from degrading SNR.
推荐
Scanner and Sensor Signal Acquisition
ADS804U is suitable for scanner, sensor, and industrial acquisition systems requiring a moderate-speed analog-to-digital conversion stage with direct parallel output. The single-input architecture makes it straightforward to assign one converter to each sensor channel when channels are synchronized. Use a controlled input network and reference arrangement, and verify channel-to-channel timing and calibration. The converter’s 69-dB SNR and 80-dB Nyquist SFDR provide useful baselines, but sensor noise, grounding, and PCB contamination may set the practical system result.
推荐
Digital Oscilloscope and Waveform Capture
ADS804U can form the ADC stage of a digital waveform-capture instrument when 10-MSPS operation is sufficient for the signal bandwidth. The parallel output bus can feed FPGA logic that performs triggering, interpolation, filtering, or display formatting. The design should treat the converter as a high-speed mixed-signal component: use a low-jitter sampling clock, short output routes, solid ground-plane continuity, and separate analog and digital supply filtering. The verified industrial temperature grade supports equipment targeting that grade, subject to the complete ordering information.
推荐
推荐产品汇总
工程参考数据： ADS804U ——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 | ADS804E/1KG4 |
|---|---|---|
| Brand | Texas Instruments | Texas Instruments |
| Package | 28-pin SOIC | 28-pin package; exact package equivalence requires datasheet validation |
| Resolution | 12 bit | 12 bit |
| Sampling Rate | 10 MSPS | 10 MSPS |
| Data Interface | Parallel | Parallel |
| Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C |
关键差异点
- High-speed parallel conversion （对比 ADS804E/1KG4)
- Flexible analog input range （对比 ADS804E/1KG4)
- Published dynamic-performance figures （对比 ADS804E/1KG4)
设计说明
Treat the ADS804U as a high-speed mixed-signal device. Route the analog input and reference connections directly to the converter pins, keep the analog path away from clock and parallel-output nets, and provide uninterrupted ground-plane return paths. Because the verified interface is 12-bit parallel at 10 MSPS, output-routing length, impedance, and crosstalk can affect digital capture even when the analog source is clean.
Use a low-jitter sampling clock and verify the converter’s acquisition timing against the actual source impedance. The supplied data confirms 10-MSPS operation and ±0.3-LSB DNL, but it does not provide the complete timing table or input-capacitance values. Confirm those values in the manufacturer datasheet, then size the input network and shielding or guard structures around the analog pin.
Estimated power dissipation is approximately 180 mW because the verified family data explicitly states low power of 180 mW. Use separate, well-decoupled analog and digital supply paths, place local capacitors at the relevant pins, and keep high-current return currents out of the analog reference area. The supplied data does not include the complete supply-voltage or decoupling tables, so those values must be taken from the manufacturer datasheet before final layout.
合规信息
The supplied verified data does not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. Obtain current manufacturer and supplier declarations before regulatory qualification.