ADS825E/1K - 10-Bit 40-MSPS ADC | Texas Instruments
부품 번호: ADS825E/1K ✓ 활성ADS825E/1K 개요
An ADC is an analog-to-digital converter, a semiconductor that samples a continuous voltage and produces a corresponding digital code for processing, storage, or transmission. The ADS825 belongs to the ADC hierarchy, combining a high-bandwidth sampling architecture with a 10-bit quantizer. Its pipeline operation supports 40 MSPS conversion while maintaining the input flexibility needed for instrumentation, communications, and embedded signal-processing systems.
The main performance features include 60 dB signal-to-noise ratio, 72 dBFS spurious-free dynamic range, and low differential nonlinearity of 0.5 LSB. Power consumption is 190 mW, while internal and external reference options permit the analog front end to use either the on-chip reference or a system-level voltage. Single-ended and fully differential input modes also support different source architectures and signal-conditioning requirements.
At the center of the device is a 10-bit, 40-MSPS sampling ADC with a high-bandwidth track-and-hold stage. The pipeline architecture converts successive samples at a maximum rate of 40 million samples per second. Differential nonlinearity below 1 LSB is important for uniform code transitions, while the 60 dB SNR and 72 dBFS SFDR help preserve small-signal information and limit unwanted harmonic content in sampled waveforms.
Typical applications include communications receivers, industrial monitoring, data acquisition, medical instrumentation, and embedded control systems. Single-ended inputs are useful when the source is referenced to a common ground, while fully differential operation can improve rejection of common-mode noise in balanced systems. The internal reference simplifies standalone converter designs, whereas external-reference operation supports synchronized or precision multi-channel systems.
Designers should pay particular attention to input range, reference selection, digital interface timing, and decoupling. The manufacturer identifies the ADS825 as pin-for-pin compatible with the ADS822, ADS823, ADS826, and ADS828 families in the SSOP-28 package, providing a useful upgrade path when conversion speed requirements change. Verify the exact input, reference, and digital timing configuration before replacing one family member with another.
This page combines manufacturer specifications, package compatibility information, practical design guidance, and a parameter-focused comparison of supported alternatives. It is intended to help engineers determine whether the ADS825E/1K provides the required resolution, throughput, interface, and package compatibility without overlooking changes in speed or analog configuration.
드롭인 대체품: ADS825E/1K — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
ADS822E/1K
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ADS823E/1K
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ADS826E/1K
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ADS828E/1K
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ADS902E
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ADS825E/1K 최대 정격 & 전기적 특성
| 분해능 | 10 bit |
| 샘플링 속도 | 40 MSPS |
| Analog Input | 1 input, single-ended or fully differential |
| Converter Architecture | 1 pipelined |
| Signal-to-Noise Ratio | 60 dB |
| Spurious-Free Dynamic Range | 72 dBFS |
| Differential Nonlinearity | 0.5 LSB |
| Power Consumption | 190 mW |
| Reference | Internal or external |
| Input Range | Programmable |
| 공급 전압 | +5 V |
| Logic I/O Compatibility | +5 V compatible |
| 동작 온도 | -40 °C to +85 °C |
| Temperature Grade | Industrial |
| 패키지 | 28-pin SSOP |
| 실장 유형 | Surface mount |
| Pin Compatibility | Pin-for-pin compatible with ADS822, ADS823, ADS826, and ADS828 |
ADS825E/1K 28-pin ssop 핀 구성 가이드
ADS825E/1K(28-pin ssop 패키지)의 핀 구성입니다. 이 아날로그 부품에는 입력, 출력, 전원 공급 핀이 있습니다. 오프셋 널, 보상, 인에이블 핀 구성은 제조사 데이터시트를 참조하십시오. 신호 컨디셔닝 및 증폭기 회로에 이상적입니다.
다음에 대한 상세 핀아웃 데이터 없음: ADS825E/1K.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
ADS825E/1K 적합 용도: 6 애플리케이션s: Communications Receiver Front End, Industrial Process Monitoring, High-Speed Data Acquisition, Medical Signal Conditioning, Embedded Control and Monitoring, Test and Measurement Instrumentation.
Communications Receiver Front End
The ADS825E/1K fits communications receiver chains that require digitizing a moderate-bandwidth analog waveform at 40 MSPS. Its 10-bit conversion rate supports 40 million samples each second, while the 60 dB SNR and 72 dBFS SFDR help preserve signal quality and constrain spurious components. The converter accepts single-ended or fully differential input, allowing it to connect to either a single-ended detector path or a balanced mixer output. Use the differential configuration when common-mode voltage and ground-noise rejection are important, and verify that the programmable input range covers the receiver’s signal amplitude.
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Industrial Process Monitoring
The ADS825E/1K is appropriate for industrial monitoring systems that sample sensors or conditioned process signals at high speed. Its 40 MSPS throughput allows rapid acquisition, while 10-bit resolution provides 1,024 digital codes for the selected analog input range. The -40 °C to +85 °C industrial temperature range supports equipment intended for controlled industrial environments. Single-ended operation suits grounded sensor outputs, whereas fully differential input can help reject common-mode noise in long or noisy signal paths. The 190 mW power figure should be considered when designing compact, sealed, or thermally constrained monitoring equipment.
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High-Speed Data Acquisition
The ADS825E/1K provides a 10-bit, 40-MSPS conversion path for data-acquisition systems that need more temporal resolution than a low-speed SAR ADC can deliver. The pipelined architecture and 40 MSPS rate are useful for sampling transient waveforms, vibration-related signals, and pulsed analog events. Its 0.5 LSB differential nonlinearity specification supports more uniform code transitions, while programmable input range lets the designer scale different sensor outputs. A balanced analog front end and controlled reference arrangement are important when preserving small-signal fidelity across repeated acquisitions.
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Medical Signal Conditioning
The ADS825E/1K can serve as the sampling stage in medical monitoring equipment that converts conditioned physiological or diagnostic signals into digital data. Its 40 MSPS rate captures rapidly changing waveforms, while 10-bit resolution and 60 dB SNR define the useful dynamic range of the converter. Fully differential input is advantageous when the front end presents a centered signal and requires rejection of common-mode noise. The industrial temperature range covers many instrumented environments, although medical-system qualification, patient isolation, safety requirements, and input protection must be addressed separately from the ADC itself.
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Embedded Control and Monitoring
The ADS825E/1K is useful in embedded platforms that need a fast sampling peripheral for control loops, event detection, or adaptive feedback. At 40 MSPS, the ADC can observe waveform shape and timing details while the 10-bit quantizer supplies 1,024 digital levels. Internal-reference operation can reduce external reference complexity, but an external reference may provide tighter sharing and calibration control. Designers should treat the converter’s 190 mW consumption as a meaningful thermal load and confirm that the host processor or FPGA can receive and process the converter’s digital output at the required rate.
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Test and Measurement Instrumentation
The ADS825E/1K is appropriate for bench and embedded measurement instruments that require fast sampling of an analog test point. Its 40 MSPS rate supports time-domain analysis, while 72 dBFS SFDR identifies the converter’s contribution to harmonic distortion in the sampled result. Programmable input range simplifies adaptation to different stimulus levels, and internal or external reference selection supports both standalone and coordinated architectures. For accurate measurements, use a stable clock, appropriate source impedance, decoupled supply and reference rails, and careful return-path layout to prevent converter self-performance from masking the behavior of the circuit under test.
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추천 제품 요약
엔지니어링 참조 데이터: ADS825E/1K — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | ADS822E/1K | ADS823E/1K | ADS826E/1K | ADS828E/1K | ADS902E |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | SSOP-28 | SSOP-28 | SSOP-28 | SSOP-28 | SSOP-28 | 28-SSOP |
| Resolution | 10 bit | 10 bit | 10 bit | 10 bit | 10 bit | 10 bit |
주요 차별점
- Matches the closest 40-MSPS family option in speed (vs ADS822E/1K)
- Lower conversion throughput than the 60-MSPS family alternatives (vs ADS823E/1K)
- Balanced choice between sampling rate and family upgrade path (vs ADS828E/1K)
- Documented 60 dB SNR and 72 dBFS SFDR (vs ADS902E)
설계 노트
Place the analog input, reference, supply, and ground connections according to the pin-description and layout guidance in the manufacturer datasheet. Keep the analog input traces short, use a continuous ground reference beneath the analog section, and avoid routing digital clock and data signals beneath sensitive input nodes. The SSOP-28 footprint leaves limited lead spacing, so inspect the PCB assembly rules and use an appropriate solderable land pattern.
The converter's stated power consumption is 190 mW. In a compact system, estimate its heat contribution as 190 mW when operating at the stated nominal condition and verify the temperature rise in the actual PCB environment. Provide local supply decoupling, maintain a low-impedance return path, and avoid placing the converter next to a heat source when accurate codes are required. Use the manufacturer recommendations for capacitor values and placement.
The 40 MSPS sampling rate places a meaningful bandwidth requirement on the analog front end and clock path. Keep the sampling clock clean, observe recommended clock timing, and control crosstalk from switching digital signals to the analog input. For fully differential operation, preserve symmetrical routing and impedance where applicable. Programmable input range does not remove the need to keep the source voltage and common-mode limits within the device specifications.
Do not assume that every pin-compatible ADS82x member can be substituted without checking timing and configuration. The ADS823 and ADS826 operate at 60 MSPS, and the ADS828 operates at 75 MSPS, compared with 40 MSPS for the ADS825. Recheck clock frequency, acquisition time, output timing, reference configuration, input range, and power behavior before replacing the ADS825E/1K in production hardware.
규정 준수 정보
The device is identified as an industrial-grade component, but no specific RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification status is stated.