ADS803E - 12-Bit 5-MSPS ADC | Texas Instruments
MPN: ADS803E ✓ Hoạt độngADS803E Tóm tắt
An ADC is an analog-to-digital converter, a semiconductor that samples a continuous voltage and produces a numeric code for processing, storage, or transmission. The ADS803E belongs to the pipelined ADC family and the broader data-converter and signal-processing semiconductor hierarchy. Its single input channel and parallel output interface make it suitable for measurement and signal-acquisition systems that require deterministic sampling rather than a communications-oriented serial interface.
Verified features include 82 dB SFDR at Nyquist, 69 dB SNR, 115 mW low power, and 0.25-LSB low differential nonlinearity. The device also includes internal-reference capability, a flexible input range, and an over-range indicator. These features help simplify calibration and signal conditioning when the source can be scaled to the selected input range. The internal reference can be programmed for a 2 Vpp input range for improved spurious performance and easier source drive, as stated in the verified Texas Instruments description.
The ADS803E uses a pipelined conversion architecture to support 5 MSPS sampling while maintaining 12-bit output resolution. Its parallel digital output requires careful routing on a mixed-signal PCB, while the analog input and reference network must be kept away from high-current digital return paths. Designers should pay particular attention to input settling time, reference noise, clock jitter, output timing, and the distinction between signal bandwidth and Nyquist-limited performance.
Typical applications include IF and baseband digitization, CCD imaging scanners, and test instrumentation. These uses benefit from the ADC's flexible input range, over-range indication, and sampling capability, provided that the downstream processing bandwidth matches the selected sample rate. The 28-SSOP package is useful for conventional surface-mount assembly but requires adequate pin escape routing and thermal consideration.
When designing around the ADS803E, begin by defining the analog signal range and reference arrangement, then verify that the driver can settle within the acquisition interval at 5 MSPS. Use short, controlled traces for the analog input and reference, provide a stable clock, and route digital outputs away from sensitive analog nodes. This page consolidates the verified product identity, distributor listing, datasheet references, application positioning, and replacement constraints.
Bộ thay thế dễ dàng lắp đặt cho ADS803E — 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 ADS803E (cùng hình factor và footprint) — khác nhau ở Operating Temperature, Package, Sampling Rate, Reference, Resolution.
ADS804E
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADS805E/1KG4
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADS803E/1KG4
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADS804
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS805E/1KG4
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADS803E Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 12 bit |
| Tỷ lệ lấy mẫu | 5 MSPS |
| Input Channels | 1 input |
| Conversion Architecture | Pipelined |
| Analog Input Range | 2 Vpp to 5 Vpp |
| Reference | Internal or external |
| SFDR | 82 dB at Nyquist |
| SNR | 69 dB |
| Power Consumption | 115 mW |
| Low Differential Nonlinearity | 0.25 LSB |
| Over-Range Indicator | Yes |
| Programmed Input Range | 2 Vpp |
| Hộp | 28-SSOP |
| Nhiệt độ hoạt động | -40 C to +85 C |
| Datasheet Revision | Rev. B |
Hướng dẫn cấu hình chân ADS803E 28-ssop
Cấu hình chân cho ADS803E (28-ssop 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 ADS803E.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
ADS803E phù hợp cho 6 Áp dụngs: IF and Baseband Digitization, CCD Imaging Scanner, Test and Measurement Instrumentation, High-Speed Data Acquisition, Communication Signal Conditioning, Industrial Control and Monitoring.
IF and Baseband Digitization
The ADS803E fits IF and baseband digitization because the verified Texas Instruments description lists both applications and specifies a 12-bit resolution with 5-MSPS sampling. Use the converter after an appropriate gain, filter, and anti-alias stage so the analog signal is mapped into the selected 2 Vpp to 5 Vpp range. Its 82 dB SFDR at Nyquist is useful when reducing distortion during conversion, while the 5-MSPS rate limits bandwidth to the intended Nyquist region. The design must verify input settling, clock jitter, and acquisition timing rather than treating the converter as a bandwidth-independent sampler.
Được đề xuất
CCD Imaging Scanner
ADS803E is explicitly identified by Texas Instruments as suitable for CCD imaging scanners, where a conditioned pixel or line signal can be digitized at 5 MSPS with 12-bit resolution. The flexible input range helps match different scanner signal amplitudes, while the over-range indicator can flag inputs approaching the selected full-scale range. A practical implementation needs a low-noise amplifier or driver, an anti-alias filter, and capture logic synchronized to the converter clock. Verify the CCD output bandwidth, settling time, and required inter-sample interval so the complete signal chain does not limit the nominal ADC performance.
Được đề xuất
Test and Measurement Instrumentation
The ADS803E can serve as the sampling ADC in test instrumentation when measurements require 12-bit digital resolution at up to 5 MSPS. The verified product information reports 69 dB SNR and 82 dB SFDR at Nyquist, giving a useful basis for choosing the converter in waveform, frequency, or transient-acquisition systems. The front end should provide gain calibration, input protection, and an anti-alias filter. Since the output is parallel and the package is 28-SSOP, the receiving FPGA or microcontroller must be placed with careful consideration of trace length, clocking, and simultaneous output switching.
Được đề xuất
High-Speed Data Acquisition
For a compact high-speed acquisition channel, ADS803E offers 5 MSPS operation, 12-bit output resolution, a 2 Vpp to 5 Vpp flexible input range, and 115 mW power consumption. This combination is useful when the system needs moderate sampling throughput without moving immediately to a higher-power, higher-speed converter. The 115 mW figure should be used for an initial power budget, while actual board dissipation depends on supply voltage, output loading, switching activity, and thermal conditions. Parallel data routing and reference layout remain the main practical constraints.
Được đề xuất
Communication Signal Conditioning
ADS803E can digitize conditioned communication signals when the required signal bandwidth is compatible with a 5-MSPS sampling rate and the system can tolerate the converter's 12-bit resolution. The flexible input range supports different analog signal levels, and the internal-reference option can simplify the power architecture for less demanding calibration environments. The input driver must still preserve the 82 dB SFDR target if low spurious content is important. Use controlled routing and a clean reference to prevent digital and switching noise from degrading the measured SNR of 69 dB.
Được đề xuất
Industrial Control and Monitoring
ADS803E can be used in industrial measurement or monitoring systems that need repeatable digital sampling of a conditioned analog process signal. Its 12-bit resolution and 5-MSPS capability are appropriate for capturing transients and waveform features when the process bandwidth is well below the converter's Nyquist region. The -40 C to +85 C operating range is stated in the verified distributor result, making it relevant to equipment operating across a broad industrial temperature span. Confirm whether the exact ADS803E suffix is qualified for the target application and validate isolation, grounding, and calibration requirements separately.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADS803E — 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 | ADS805E | ADS803 | ADS804 | ADS805 |
|---|---|---|---|---|---|---|
| Sampling Rate | 5 MSPS | 10 MSPS | 20 MSPS | 5 MSPS | 10 MSPS | 20 MSPS |
| Package | 28-SSOP | 28-SSOP | 28-SSOP | 28-SSOP | 28-SSOP | 28-SSOP |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
Bảo phân biệt quan trọng
- 5-MSPS sampling rate in a 12-bit converter family (vsADS804E)
- Verified low-power figure (vsADS805E)
- Flexible input range with internal-reference option (vsADS804E)
Ghi chú thiết kế
Treat the ADS803E analog input as a high-speed settling network. Keep the selected 2 Vpp to 5 Vpp range consistent with the driver amplitude, route the input and reference with short controlled traces, and verify settling at the 5-MSPS acquisition interval. The verified 82 dB SFDR and 69 dB SNR figures are useful targets only when the complete front end, clock, and layout preserve the converter's intended operating conditions.
Separate the analog input, reference, and digital output paths on the PCB. Because ADS803E uses parallel digital outputs, simultaneous output switching can create return-current disturbance; route outputs away from the input and reference nets and provide a solid ground reference. Confirm the exact pinout from the manufacturer datasheet before final routing because the verified web data did not include a complete pin-number list.
Do not assume that the 5-MSPS rating automatically makes a replacement interchangeable. The verified TI information identifies ADS804 and ADS805 as pin-compatible ADS803-family parts, but their sampling rates are 10 MSPS and 20 MSPS. Changing to either part can alter clock, acquisition, downstream bandwidth, power, and signal-integrity requirements, so review the complete datasheet and validate the redesigned channel.
Thông tin tuân thủ
The verified web data does not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. The verified distributor result states an operating temperature of -40 C to +85 C, but compliance claims must be confirmed from the current manufacturer documentation.