TPS8802DCPR - Smoke Alarm AFE with CO Support | TI
부품 번호: TPS8802DCPR ✗ 단종| 수량 | 단가 | 합계 |
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| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
TPS8802DCPR 개요
What is a smoke-alarm analog front end? An AFE is a semiconductor that connects physical sensing elements to an embedded system. In a photoelectric alarm, light scattering and light-absorption signals require controlled excitation, amplification, filtering, and diagnosis. The TPS8802DCPR integrates those signal-chain functions together with supporting regulators and drivers, reducing the number of discrete components and helping designers create a compact, low-power detector platform.
The verified TI product information highlights a wide input-voltage range, low standby-power consumption, and power-saving features designed to support 10-year battery-powered smoke-alarm systems. Its dual-wave photoelectric architecture and CO-detection capability allow one integrated platform to combine optical smoke sensing with electrochemical CO-sensor signal conditioning. The I2C interface provides a digital control and diagnostic path, while the analog input supports direct connection to sensing circuitry.
The TPS8802DCPR is intended for residential smoke alarms, combination smoke-and-CO alarms, and other safety products requiring highly integrated sensing support. Its integrated regulators and amplifiers can simplify power-tree design compared with a discrete implementation, while digital configuration can support manufacturing tests and field diagnostics. Exact electrical limits, gain settings, timing values, and pin functions were not included in the supplied verified records and therefore require confirmation from the manufacturer datasheet before design release.
For battery operation, standby current is especially important because the target application is a long-lived safety device. Designers should calculate average and peak current across the sensing duty cycle, confirm regulator startup behavior, and verify that low-power modes preserve alarm thresholds and diagnostic performance. The I2C pull-up arrangement, grounding, and decoupling should follow the manufacturer layout guidance to prevent communication errors or unintended current consumption.
This product page consolidates the verified distributor classification, manufacturer application description, package information, source links, and design cautions. It does not invent electrical parameters or claim unverified drop-in equivalents. Confirm the complete pinout, absolute maximum ratings, recommended operating conditions, and lifecycle status in the current Texas Instruments documentation before schematic capture or PCB release.
드롭인 대체품: TPS8802DCPR — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
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대체품 요청TPS8802DCPR 사양
| Product Type | Smoke-alarm analog front end (AFE) |
| Primary Application | Residential smoke alarms |
| Smoke-Sensing Architecture | Dual-wave photoelectric system |
| Carbon Monoxide Support | CO detection system integration |
| Input Type | Analog input |
| Digital Interface | I2C output |
| Integrated Functions | Regulators, amplifiers, and drivers |
| Power Architecture | Battery-operated system support |
| Battery-Life Target | Supports 10-year battery-operated systems |
| 패키지 | 38-pin HTSSOP |
| 실장 유형 | Surface mount |
TPS8802DCPR 38-pin htssop 핀 구성 가이드
TPS8802DCPR(38-pin htssop 패키지)의 핀 구성입니다. 핀 번호, 기능, 연결 다이어그램은 제조사 데이터시트에 정의되어 있습니다. 정확한 풋프린트와 솔더링 지침은 해당 문서를 참조하십시오.
다음에 대한 상세 핀아웃 데이터 없음: TPS8802DCPR.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
TPS8802DCPR 적합 용도: 6 애플리케이션s: Residential Photoelectric Smoke Alarm, Combination Smoke and Carbon Monoxide Alarm, Low-Power Battery Safety Sensor, Photoelectric Smoke-Detector Signal Conditioning, Residential Safety Sensor with Digital Diagnostics, Embedded Residential Alarm Controller.
Residential Photoelectric Smoke Alarm
The TPS8802DCPR fits a residential photoelectric smoke alarm because TI identifies it as a smoke-alarm AFE for dual-wave sensing, with integrated regulators, amplifiers, and drivers. The device can support the excitation and signal-processing functions needed to measure scattered or transmitted light while keeping the external component count lower than a fully discrete implementation. Its low standby-power focus is particularly important for a battery-operated detector intended to operate for years. The analog input and I2C output provide a path for sensor conditioning and diagnostics, while the 38-pin HTSSOP package supports compact surface-mount construction. Confirm sensor-specific excitation, filtering, threshold, and timing details in the current TI datasheet.
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Combination Smoke and Carbon Monoxide Alarm
The TPS8802DCPR is relevant to combination smoke-and-CO alarms because TI describes integration for a dual-wave photoelectric smoke alarm and carbon monoxide detection system. One controller can organize the smoke-sensing and CO-sensing signal paths within a compact safety product rather than separating them across unrelated controllers. The regulated power architecture, amplifiers, drivers, analog input, and I2C-based diagnostics may simplify coordinated operation and production testing. The design still needs separate sensing elements and appropriate conditioning networks, so verify sensor chemistry, electrode geometry, signal range, and alarm thresholds in the manufacturer documentation. Battery-life calculations should include both smoke-detection and CO-sensing duty cycles.
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Low-Power Battery Safety Sensor
The TPS8802DCPR supports low-power battery safety products where standby consumption is a primary design constraint. TI highlights low standby power and power-saving features specifically in the context of 10-year battery-operated systems. In a duty-cycled detector, the device can manage sensing and diagnostic activity while reducing unnecessary current between measurements, helping the system meet its battery-life target. The final result depends on sensor current, regulator efficiency, measurement duration, self-test frequency, temperature, and alarm-sound energy requirements. Use the manufacturer’s recommended operating modes and external components rather than assuming that the advertised battery target applies to every sensor configuration.
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Photoelectric Smoke-Detector Signal Conditioning
The integrated analog front end is suited to photoelectric sensing chains that require controlled drive and receive-amplifier behavior around a smoke chamber. TPS8802DCPR’s amplifiers and drivers can reduce the external analog infrastructure otherwise required between optical elements and system control. The analog input allows the sensed optical response to enter the integrated processing architecture, while I2C provides configuration or diagnostic communication. Actual gain, bandwidth, offset, conversion method, and optical-drive limits were not included in the supplied records, so these values must be obtained from the TI datasheet. Bench validation should cover dark calibration, ambient-light compensation, chamber geometry, alarm thresholds, and fault detection.
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Residential Safety Sensor with Digital Diagnostics
The I2C output makes TPS8802DCPR suitable for safety products that need a digital diagnostic and configuration path in addition to analog sensing. The verified supplier description identifies I2C-based diagnostics as a feature that distinguishes it from simpler standalone supervisor devices. A microcontroller or test fixture can use that path for calibration, operating-state inspection, fault reporting, or production testing, subject to the exact command set in the datasheet. Design the bus carefully by confirming the device address, pull-up voltage, maximum bus capacitance, isolation requirements, and behavior during reset or low-power states. The I2C bus must remain reliable in the presence of battery transients and smoke-alarm switching loads.
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Embedded Residential Alarm Controller
TPS8802DCPR can serve as the sensing and control foundation inside a compact embedded residential alarm controller. Its integration of regulators, amplifiers, drivers, and digital interface allows the designer to build around a purpose-designed smoke-alarm ASIC rather than combining several generic analog blocks. This can simplify firmware partitioning because the same device is oriented toward sensor acquisition, alarm-system power management, and diagnostics. The controller still needs a sound-producing driver or alarm path, appropriate enclosure, sensor chamber, and independent safety mechanisms where required by the applicable product standard. Do not infer certification from the phrase “residential smoke alarm”; verify the complete product’s regulatory and safety requirements separately.
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추천 제품 요약
엔지니어링 참조 데이터: TPS8802DCPR — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | MAX16027 |
|---|---|---|
| Product Type | Smoke-alarm analog front end | Smoke-alarm power-management device; not verified as pin-compatible |
| Brand | Texas Instruments | Maxim Integrated |
| Smoke-Sensing Support | Dual-wave photoelectric | Not verified |
| Analog Input | Yes | Not verified |
| Digital Interface | I2C output | No digital communication per verified description |
| Integrated Functions | Regulators, amplifiers, and drivers | Reset and supervisor functions |
| Pin Compatibility | Reference device | Not pin-to-pin or register-compatible |
주요 차별점
- Purpose-built smoke-alarm signal chain (vs MAX16027)
- Digital diagnostic interface (vs MAX16027)
- Application-specific integration (vs Generic discrete smoke-signal chain)
설계 노트
Validate the complete battery-current budget before committing to the TPS8802DCPR. Include quiescent current, regulator losses, sensor excitation, amplifier activity, I2C transactions, self-tests, and alarm-output energy in the average-current calculation. The supplied TI description confirms low standby-power intent and support for 10-year battery systems, but it does not provide the numerical operating-current limits needed for a design sign-off. Measure current across startup, normal sensing, diagnostic, and fault states.
Use the current TI package drawing to confirm the 38-pin HTSSOP footprint, lead pitch, body dimensions, pin-one orientation, and any exposed thermal-pad requirement. Place decoupling capacitors close to the relevant power pins, keep the I2C traces short, and provide a continuous return path where practical. Because the supplied records do not include exact pin assignments, do not finalize the footprint solely from the generic HTSSOP name.
Plan the analog sensor path with attention to noise, grounding, and the operating characteristics of the photoelectric and CO sensing elements. Keep high-gain or alarm-sensitive traces away from switching and transient-producing sections, and follow the manufacturer’s recommended grounding topology. Treat I2C as a potentially noisy environment because battery transients, regulator activity, and sensor excitation can disturb communication. Validate signal integrity and diagnostic behavior with the actual chamber and sensor loads.
Do not substitute a generic smoke-alarm power controller without checking the complete interface. The verified supplier information says MAX16027 is not pin-to-pin or register-compatible with TPS8802DCPR, and its supervisor-oriented feature set differs from the TPS8802’s I2C diagnostics and analog-input handling. A cross-reference search result that merely describes similar alarm functions is not proof of drop-in compatibility.
규정 준수 정보
The supplied verified records identify the product, package, interface class, and application but do not provide RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. Compliance must be confirmed for the exact ordering code using current Texas Instruments documentation.
