ADS804E - 12-Bit 10-MSPS Pipelined ADC | Texas Instruments
MPN: ADS804E ✓ نشطADS804E نظرة عامة
An ADC is an integrated circuit that converts an analog voltage into a digital code. A pipelined ADC uses multiple internal stages and parallel output data, allowing a higher conversion rate than many single-stage architectures. The ADS804E belongs to the ADC and data-converter hierarchy, where resolution, sampling rate, input range, reference accuracy, interface timing, and noise performance determine suitability.
The ADS804E combines 12-bit resolution with a 10 MSPS sampling rate. Verified distributor and manufacturer listings identify the device as a one-input pipelined converter with a flexible 2 Vp-p input range, internal and external reference options, 80 dB SFDR at Nyquist, 69 dB SNR, 180 mW low power, and differential linearity of ±0.3 LSB. These figures make it appropriate for IF and baseband digitization, CCD imaging, scanners, and test instrumentation.
The device uses a high-bandwidth track-and-hold stage to minimize acquisition-related error and maintain useful performance at higher input frequencies. Its parallel interface supports straightforward connection to digital logic, FPGA input blocks, DSPs, or data-capture systems. The internal reference can simplify system design, while external-reference operation can be useful when multiple converters must share a precision reference or when calibration requirements demand tighter reference control.
Typical implementations include communications receivers, industrial measurement systems, imaging equipment, laboratory instruments, and embedded data-acquisition platforms. The 10 MSPS rate allows the converter to capture rapidly changing waveforms, while 12-bit resolution provides 4096 digital codes for the selected analog input range.
Designers should pay close attention to input common-mode voltage, analog signal amplitude, reference stability, source impedance, clock jitter, and the timing relationship between acquisition, conversion, and parallel output. The manufacturer datasheet should be consulted for the complete pinout, timing diagrams, input-range configuration, electrical limits, and recommended application circuit. This page combines verified manufacturer and distributor information with engineering guidance, application context, and comparison notes to support component selection and PCB planning.
بدائل مباشرة لـ ADS804E — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع ADS804E (نفس عامل الشكل والبصمة) — يختلف في Operating Temperature, Package, Reference, Sampling Rate, Power Consumption.
ADS803E/1KG4
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←ADS805E/1KG4
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←ADS804E/1K
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
ADS804EG4
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
ADS804U
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←ADS804E الحدود القصوى والخصائص الكهربائية
| الدقة | 12 bits |
| معدل أخذ العينات | 10 MSPS |
| Architecture | Pipelined ADC |
| Number of Inputs | 1 input |
| نطاق جهد الدخل | 2 Vp-p programmable range |
| Reference | Internal or external |
| Output Interface | Parallel |
| Spurious-Free Dynamic Range | 80 dB at Nyquist |
| Signal-to-Noise Ratio | 69 dB |
| Power Consumption | 180 mW |
| Differential Linearity | ±0.3 LSB |
| العلبة | 28-pin SSOP |
| درجة حرارة التشغيل | -40°C to +85°C |
| Overrange Indicator | Available |
| Track-and-Hold | High-bandwidth track-and-hold |
دليل تكوين أطراف ADS804E 28-pin ssop
تكوين الأطراف لـ ADS804E (حزمة 28-pin ssop). يتميز هذا المكوّن التناظري بأطراف الإدخال والإخراج وإمداد الطاقة. راجع ورقة بيانات الشركة المصنعة لتكوينات طرف إلغاء الإزاحة والتعويض والتمكين. مثالي لدوائر تكييف الإشارة والمضخمات.
لا تتوفر بيانات مفصلة لمخطط التوصيلات لـ ADS804E.
راجع ورقة البيانات للحصول على تكوين الأطراف الكامل.
التطبيقات النموذجية
ADS804E مناسب لـ 6 التطبيقs: IF and Baseband Communications Digitization, CCD Imaging and Scanner Digitization, Test and Measurement Instrumentation, Industrial Data Acquisition, RF and Baseband Receiver Front Ends, FPGA-Based Digital Capture.
IF and Baseband Communications Digitization
The ADS804E fits IF and baseband communications digitization because it combines a 10 MSPS sampling rate with 12-bit resolution and a high-bandwidth track-and-hold stage. Use it when a receiver needs to convert an intermediate-frequency or baseband waveform into parallel digital data for filtering, demodulation, or digital correction. Its verified 80 dB SFDR at Nyquist and 69 dB SNR are important for preserving signal-to-noise performance, while the flexible 2 Vp-p input range allows the analog front end to select a suitable signal scale. Clock jitter, source impedance, and input-driver settling must still be controlled.
موصى به
CCD Imaging and Scanner Digitization
The ADS804E is suitable for CCD imaging, scanners, and other sensor-digitization systems that require consistent sampling of rapidly changing analog outputs. The 10 MSPS rate provides temporal resolution for motion or scan-rate requirements, while the 12-bit converter supplies 4096 digital levels. A high-bandwidth track-and-hold stage can help acquire the sensor waveform during the sampling interval. In a scanner design, use a suitable input buffer, define the analog common-mode level, and route the 12-bit parallel bus with timing margin to an FPGA or digital controller.
موصى به
Test and Measurement Instrumentation
ADS804E can be used in oscilloscope-like, waveform-capture, and automated test equipment when a 10-MSPS, 12-bit measurement path is sufficient. Its parallel output allows direct connection to an FPGA capture engine, and the overrange indicator can assist with input-range detection. The 69 dB SNR specification is useful for preserving small-signal detail, but system accuracy also depends on reference quality, analog gain, input bandwidth, and calibration. For laboratory-grade measurements, define calibration points and ensure the selected external or internal reference remains stable during the measurement interval.
موصى به
Industrial Data Acquisition
The ADS804E supports industrial acquisition systems that digitize sensor outputs or conditioned process signals at up to 10 MSPS. The single-input architecture is appropriate when each converter is paired with one analog channel, and the flexible input range can simplify front-end scaling after conditioning. The converter's parallel output is useful for FPGA-based filtering, event detection, or real-time control. Industrial systems should pay attention to grounding, isolation, clock distribution, and power-supply noise; these factors can affect SNR and SFDR more than the nominal converter specification.
موصى به
RF and Baseband Receiver Front Ends
ADS804E is suitable for digitizing conditioned RF or IF signals when the design requires a 10 MSPS, 12-bit conversion stage. The device should follow the RF front end rather than directly connect to a high-frequency RF node; the analog input driver must provide appropriate gain, filtering, impedance, and common-mode behavior. Verified performance figures of 80 dB SFDR at Nyquist and 69 dB SNR help characterize the converter, while the flexible input range supports scaling after mixer or amplifier stages. PCB layout should keep the analog path short and separate high-current clock and digital-return paths.
موصى به
FPGA-Based Digital Capture
ADS804E is well matched to an FPGA capture architecture because it delivers 12-bit parallel output at 10 MSPS. The FPGA can capture code words, perform thresholding or filtering, and transfer only relevant events to a host processor, reducing host data traffic. Because the ADC requires accurate sampling timing, the clock relationship between the converter and FPGA must be budgeted with setup and hold margin. The analog input and reference should be decoupled close to the device, and the parallel data bus should be routed with controlled length and return-path continuity.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ ADS804E — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | ADS803 | ADS805 | ADS804E/1K | ADS804EG4 |
|---|---|---|---|---|---|
| Sampling Rate | 10 MSPS | 5 MSPS | 20 MSPS | 10 MSPS | 10 MSPS |
| Package | 28-pin SSOP | 28-pin SSOP | 28-pin SSOP | 28-pin SSOP | 28-pin SSOP |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
أبرز الفروقات
- Mid-speed sampling rate within the pin-compatible ADS803 and ADS805 family (مقابلADS803)
- Lower sampling rate than the faster ADS805 family member (مقابلADS805)
- 12-bit parallel conversion with verified dynamic-performance figures (مقابلADS804EG4)
ملاحظات التصميم
The ADS804E is listed at 180 mW, so provide a clean, low-noise analog and digital supply network with local decoupling close to the device. Separate the sensitive analog reference and input returns from switching and clock-return currents where possible. The verified data does not provide complete supply-voltage limits, capacitor values, or ESR requirements; use the Texas Instruments ADS804 datasheet and application guidance for final values and stability recommendations.
Keep the analog input path short and place the input driver and any recommended anti-alias filtering close to the ADC. The 10 MSPS sampling rate does not remove the need for controlled source impedance, settling time, and impedance matching. Route the 12-bit parallel output with continuous return paths, and match clock and data timing to the receiver FPGA or DSP. Confirm timing margins against the manufacturer timing diagrams.
Do not treat pin compatibility as automatic electrical equivalence. ADS803 is identified as a 5 MSPS family member and ADS805 as a 20 MSPS member, so replacing ADS804E can change acquisition time, clock requirements, power, bandwidth, and system timing. Before substitution, verify input range, reference polarity and voltage, output coding, pin names, supply levels, clock phase, and acquisition timing against the relevant datasheet.
Use a short, controlled-impedance analog input route and keep the reference distribution quiet and well decoupled. Avoid routing high-current digital or switching signals beneath the analog input and reference nets. The parallel output bus should be length-matched only as required by the actual receiver timing, while the clock should be distributed cleanly to maintain low jitter. The supplied verified data does not include a manufacturer PCB layout, so follow the TI ADS804 datasheet and reference guidance for final placement.
معلومات الامتثال
The supplied verified data does not explicitly state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 status. Compliance must be confirmed from the current manufacturer product documentation or supplier certificates.