MCP3462-E/ST - 16-Bit Dual 153.6kSPS ADC | Microchip
料号： MCP3462-E/ST ✓ 量产中MCP3462-E/ST 概述
A delta-sigma ADC is a signal-processing category of analog-to-digital converter that continuously oversamples and digitally filters its input. Unlike a flash or successive-approximation ADC, the MCP3462 trades conversion latency for high resolution, low noise, and integrated signal conditioning. It belongs to the broader ADC > data converter > mixed-signal semiconductor hierarchy and is intended for precision measurement rather than high-speed waveform capture.
Key features include 16-bit resolution, four single-ended or two differential inputs, and a maximum programmable data rate of 153.6 kSPS. Integrated resources include an internal oscillator, programmable gain amplifier, temperature sensor, and digital interface functions described by the manufacturer. The MCP3462 uses an external voltage reference, while the pin-compatible MCP3462R adds an onboard reference and is identified by Microchip as the preferred option for new designs.
The MCP3462 combines a delta-sigma conversion core with programmable input gain and flexible data acquisition modes. Its internal oscillator reduces the need for an external clock source, while the temperature sensor supports system-level monitoring. The dual differential-input architecture allows common-mode rejection of paired sensors, and the four single-ended channels permit multiplexing for multi-sensor systems. The 2.7 V minimum analog supply supports low-voltage industrial instrumentation, although the analog and digital operating ranges must remain within their respective limits.
Typical uses include industrial process measurement, battery and power-system monitoring, environmental sensing, portable instrumentation, and low-frequency precision data acquisition. The integrated temperature sensor can assist with board-level thermal monitoring, while the programmable gain amplifier supports inputs that vary substantially in amplitude. Because the device is a delta-sigma ADC, software or digital filtering and a settling-time budget must be considered when measuring rapidly changing signals.
The principal design consideration is reference quality. The MCP3462 requires an external reference, and reference noise, layout distance, and input filtering directly influence conversion results. Place the analog inputs, external reference, and associated bypass components close to the converter, keep digital interfaces away from sensitive analog inputs, and follow the manufacturer’s recommended decoupling and grounding arrangement.
This page combines manufacturer positioning, distributor availability, verified package and channel information, pin-compatible same-family alternatives, and practical selection guidance. It also distinguishes the externally referenced MCP3462 from the onboard-reference MCP3462R so engineers can choose the appropriate variant without treating every TSSOP ADC as an interchangeable replacement.
直接替换替代料： MCP3462-E/ST ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
MCP3462R-E/ST
✅ 直接替换📋 参考替代料（不在目录中）
MCP3462RT-E/ST
✅ 直接替换📋 参考替代料（不在目录中）
MCP3462-E/ST 最大额定值与电气特性
| 分辨率 | 16 bit |
| Converter Type | Delta-sigma ADC |
| Number of Input Channels | 2 differential or 4 single-ended |
| Maximum Data Rate | 153.6 kSPS |
| Data Rate Control | Programmable |
| Analog Supply Voltage Range | 2.7 V to 3.6 V |
| Digital Supply Voltage Range | 1.8 V to 3.7 V |
| Integrated Features | Internal oscillator, programmable gain amplifier, temperature sensor |
| Voltage Reference | External |
| 工作温度范围 | -40 °C to +125 °C |
| 封装 | 20-TSSOP, 4.40 mm body width |
| 安装类型 | Surface mount |
| Terminal Count | 20 |
| Package Shape | Rectangular |
| Terminal Form | Gull wing |
| Temperature Grade | Automotive |
| Internal Reference | Not included |
MCP3462-E/ST rectangular 引脚配置指南
MCP3462-E/ST（rectangular 封装）的引脚配置。 该模拟元件具有输入、输出和电源引脚。请参阅制造商数据手册以了解失调调零、补偿和使能引脚配置。适用于信号调理和放大器电路。
暂无详细引脚数据： MCP3462-E/ST.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MCP3462-E/ST 适用于 6 应用s: Industrial Process Measurement, Battery and Power-System Monitoring, Environmental Sensor Acquisition, Portable Instrumentation, Precision Analog Sensor Front End, Automotive and Aerospace Low-Rate Monitoring.
Industrial Process Measurement
The MCP3462-E/ST suits low-frequency industrial measurements where high resolution and integrated signal conditioning matter more than rapid sampling. Two differential inputs can acquire current or voltage pairs with common-mode rejection, while the 16-bit conversion resolution supports sensors such as strain bridges, RTDs, and pressure transmitters. The programmable gain amplifier accommodates widely varying input amplitudes without requiring a separate front-end amplifier. Its internal oscillator simplifies clocking, and its maximum 153.6 kSPS rate exceeds typical process-sensor bandwidth. Because delta-sigma conversion includes digital filtering, engineers should allow the full conversion and settling interval before treating a reading as valid.
推荐
Battery and Power-System Monitoring
The MCP3462-E/ST can monitor pack voltage, cell taps, current-sense outputs, and auxiliary power rails in a battery-management system. Four single-ended inputs provide flexible multiplexing, while the differential configuration supports two current- or voltage-sensing channels simultaneously. Its low-noise 16-bit delta-sigma architecture can resolve small changes in monitored rails, and the integrated temperature sensor adds useful thermal context for battery packs. The 2.7 V to 3.6 V analog range suits low-energy systems, while the 1.8 V to 3.7 V digital range allows interfacing with low-voltage processors. Firmware must account for digital-filter settling and should reject transients during cell switching.
推荐
Environmental Sensor Acquisition
The MCP3462-E/ST is appropriate for multi-sensor environmental systems that combine temperature, humidity, gas, and light outputs with limited bandwidth. Four single-ended inputs allow several converters to share a system without requiring multiple analog front ends, and the 16-bit resolution can preserve small sensor-output changes. The integrated temperature sensor is useful for tracking conditions near the electronics rather than replacing a calibrated remote environmental sensor. Its internal oscillator eliminates a separate clock source, reducing component count. Because the delta-sigma filter averages noise rather than reproducing fast transients, the best results come from stable sensors and appropriately scaled analog inputs with defined acquisition times.
推荐
Portable Instrumentation
The MCP3462-E/ST fits portable measurement instruments that combine sensor inputs with a low-voltage digital controller. The 20-TSSOP package supports compact layouts, while the 2.7 V minimum analog supply and 1.8 V minimum digital supply reduce system-voltage requirements. Differential input operation improves rejection of battery-system noise and ground offsets, and the programmable gain amplifier supports microphones, pressure cells, or resistive bridges with different sensitivities. The internal oscillator reduces clock-source overhead. The key trade-off is delta-sigma settling time, which must be coordinated with the instrument’s sampling loop and digital filter settings rather than treating 153.6 kSPS as a waveform-capture bandwidth.
推荐
Precision Analog Sensor Front End
The MCP3462-E/ST can serve as the conversion stage for bridge, thermocouple, or resistive sensor front ends when the conditioned signal remains within its analog input range. Two differential channels preserve the relationship between sensor excitation and measurement, which is valuable when drift or noise appears equally on both inputs. The programmable gain amplifier reduces the external analog gain required, while the 16-bit resolution supports high-resolution signal capture. A low-noise external reference is essential for the non-R version because reference noise appears directly in the measurement result. Engineers should also verify input common-mode limits, bias voltage, sampling timing, and whether the selected gain introduces a settling penalty.
推荐
Automotive and Aerospace Low-Rate Monitoring
The MCP3462-E/ST is identified as an automotive-grade component rated from -40 °C to +125 °C, making it suitable for low-rate monitoring of vehicle or aerospace subsystems where that temperature range is required. Its four single-ended inputs can supervise several analog rails, while two differential inputs can monitor redundant or complementary sensing channels. The internal temperature sensor provides local thermal context, and the low-noise 16-bit converter can resolve gradual changes in pressure, position, or supply voltage. Qualification should not be inferred from temperature grade alone: confirm the exact AEC-Q100 record, isolation requirements, transient protection, and system-level qualification before using the device in safety-critical or aerospace equipment.
推荐
推荐产品汇总
工程参考数据： MCP3462-E/ST ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MCP3462R-E/ST | MCP3462RT-E/ST |
|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-TSSOP | 20-TSSOP - same | 20-TSSOP - same |
| Resolution | 16 bit | 16 bit | 16 bit |
| Converter Type | Delta-sigma ADC | Delta-sigma ADC | Delta-sigma ADC |
| Input Configuration | 2 differential or 4 single-ended | 2 differential or 4 single-ended | 2 differential or 4 single-ended |
| Maximum Data Rate | 153.6 kSPS | 153.6 kSPS | 153.6 kSPS |
关键差异点
- Verified manufacturer-backed pin compatibility （对比 MCP3462R-E/ST)
- Onboard-reference option in the same footprint （对比 MCP3462-E/ST)
- Integrated acquisition functions （对比 MCP3462RT-E/ST)
设计说明
The MCP3462-E/ST uses separate analog and digital supply ranges of 2.7 V to 3.6 V and 1.8 V to 3.7 V. Place the manufacturer-recommended bypass capacitors directly beside their corresponding supply pins, keep analog-ground return current away from digital switching paths, and avoid using the digital supply as a substitute for a filtered analog reference. Because the MCP3462 requires an external reference, reference noise and supply coupling form part of the converter noise budget.
Route the analog inputs and external reference as short, guarded traces on the quiet side of the PCB, with analog return paths kept separate from high-current digital and switching nodes. Place input filtering, gain-setting, and reference components close to the associated pins rather than at the connector. The TSSOP package’s fine pin pitch also warrants short ground-return connections and careful via placement so digital traces do not share a noisy path with the reference return.
Do not treat the 153.6 kSPS maximum rate as an instantaneous waveform-sampling bandwidth. Delta-sigma conversion includes oversampling and digital filtering, so each converted result has a defined settling time, and some operating modes trade resolution for output speed. Before firmware design, confirm the selected data rate, gain, filter configuration, and valid-data timing in the Microchip datasheet. Also account for the external-reference requirement of the non-R MCP3462 variant.
Choose anti-alias filtering that matches the selected conversion rate rather than applying a fixed filter across every gain mode. Differential inputs can reject common-mode noise, but their effectiveness depends on maintaining matched impedance and balanced routing. Verify common-mode input voltage against device limits, especially when using the programmable gain amplifier. For slowly changing sensor signals, average or digitally filter multiple conversions only after the analog stage has settled.
合规信息
The distributor data identifies the MCP3462-E/ST as automotive temperature grade and specifies an operating range of -40 °C to +125 °C, but the supplied sources do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. No compliance claims were inferred.
