ADS804U - 12-Bit 10-MSPS Parallel ADC | Texas Instruments
MPN: ADS804U ✗ Cuối đờiADS804U Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho ADS804U — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ADS804U (cùng hình factor và footprint) — khác nhau ở Operating Temperature, Overrange Indicator, Package, Reference, Resolution.
ADS804E/1KG4
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS804U Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 12 bit |
| Tỷ lệ lấy mẫu | 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 |
| Hộp | 28-pin SOIC |
| Terminals | 28 terminals |
| Kiểu lắp đặt | Surface mount |
| Temperature Grade | Industrial |
| Nhiệt độ hoạt động | -40 °C to +85 °C |
| Package Code | SOP |
Hướng dẫn cấu hình chân ADS804U sop
Cấu hình chân cho ADS804U (sop gói). Thành phần số hiệu này có chân đầu vào, đầu ra và nguồn cung cấp. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết cấu hình chân bù, bù trừ và chân kích hoạt. Hoàn hảo cho điều kiện tín hiệu và mạch khuếch đại.
Không có dữ liệu chân cụ thể sẵn có cho ADS804U.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
ADS804U phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADS804U — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- High-speed parallel conversion (vsADS804E/1KG4)
- Flexible analog input range (vsADS804E/1KG4)
- Published dynamic-performance figures (vsADS804E/1KG4)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.