MCP3464-E/ST - 16-Bit Quad-Channel Delta-Sigma ADC | Microchip
部品番号: MCP3464-E/ST ✓ 生産中MCP3464-E/ST 概要
A delta-sigma ADC is a type of analog-to-digital converter that uses a sigma-delta modulator and a digital decimation filter to convert an analog voltage into a high-resolution digital word. This architecture trades conversion speed for excellent noise performance and linearity, which makes it a favored member of the ADC family hierarchy: ADC -> delta-sigma ADC -> sigma-delta modulator -> high-resolution mixed-signal converter for low-bandwidth, high-precision measurement.
Key features of this device include 16-bit resolution across four analog input channels, a differential-capable sigma-delta conversion core, a 3 V supply rail for low-voltage system compatibility, and an automotive temperature grade designation according to distributor listings. Because the converter operates as a delta-sigma type ADC, it suits slow-moving analog signals such as temperature, pressure, load-cell, and bridge-sensor outputs where integration averages out wideband noise. An important design note from Microchip is that the MCP3464R variant, which includes an onboard voltage reference, is the preferred pin-compatible option for new designs; the MCP3464 itself requires an external reference.
Typical applications include industrial process-control instrumentation, medical monitoring equipment, automotive sensor acquisition, energy-metering subsystems, and precision data-acquisition modules where 16-bit resolution, low noise, and simple single-chip signal conditioning reduce the need for external analog front ends.
When designing around the MCP3464-E/ST, verify the reference-voltage requirement against your system: an external low-noise reference and proper input filtering are mandatory because the converter has no internal voltage reference. Decouple the supply pin close to the device, keep analog and digital return currents separated, and confirm the full conversion timing against your host sampling rate before committing to a multiplexed channel schedule.
This page consolidates distributor pricing, pin-compatible Microchip drop-in alternatives, and practical application and layout guidance that is not assembled from a single manufacturer datasheet, giving engineers a single decision-ready reference for this quad-channel 16-bit delta-sigma ADC.
ドロップイン代替品: MCP3464-E/ST — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
MCP3464R-E/ST
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MCP3464RT-E/ST
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MCP3462-E/ST
✅ ドロップイン価格はお問い合わせください
データシートを見る →MCP3561RT-E/ST
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MCP3461T-E/ST
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MCP3464-E/ST 最大定格＆電気的特性
| 分解能 | 16 bit |
| ADC Architecture | Delta-Sigma (Sigma-Delta) |
| Number of Input Channels | 4 |
| 電源電圧 | 3 V |
| Converter Type | Delta-Sigma ADC |
| パッケージ | TSSOP-20 (ST) |
| Number of Terminals | 20 |
| Terminal Form | Gull Wing |
| Package Shape | Rectangular |
| Temperature Grade | Automotive |
| 実装タイプ | Surface Mount |
| Onboard Voltage Reference | Not included (per Microchip MCP3464 product page) |
| Automotive Qualified | Automotive temperature grade per distributor listing |
MCP3464-E/ST rectangular ピン配置ガイド
MCP3464-E/ST (rectangular パッケージ) のピン配置。 このアナログコンポーネントは、入力、出力、および電源ピンを備えています。オフセットナル、補償、イネーブルピンの設定については、メーカーのデータシートを参照してください。信号調整やアンプ回路に最適です。
詳細なピン配置データはありません: MCP3464-E/ST.
詳細は データシート をご参照ください。
主な用途
MCP3464-E/ST の用途: 6 件s: Industrial Process Sensor Acquisition, Medical Monitoring Equipment, Automotive Sensor and Telemetry, Energy Metering and Power Measurement, Precision Data Acquisition Modules, Test and Measurement / Portable Instrumentation.
Industrial Process Sensor Acquisition
The MCP3464-E/ST fits four-channel industrial measurement front ends because its 16-bit delta-sigma core resolves slow-moving bridge and ratiometric sensor outputs with high effective resolution after digital decimation, while the 3 V supply rail matches modern 3.3 V sensor-transmitter architectures. Four analog inputs let one converter handle multiple pressure, temperature, or flow channels without duplicating analog front-end silicon. Compared with a successive-approximation ADC, the delta-sigma modulator averages wideband noise over the integration window, so a simple RC input filter is usually sufficient. The trade-off is latency: conversions are slower, so channel multiplexing must be scheduled to meet the control-loop update rate.
おすすめ
Medical Monitoring Equipment
In patient monitoring and diagnostic instrumentation the MCP3464-E/ST offers 16-bit resolution across four channels, which supports ECG, respiration, temperature, and pressure acquisition from a single device. The delta-sigma architecture suits the low-bandwidth physiological signals and its integrated digital filtering suppresses mains and wideband interference that would otherwise appear in a sensitive analog chain. Microchip positions the MCP3464 family for fast and accurate signal processing in medical imaging, automotive, and aerospace applications. Because the MCP3464 has no internal voltage reference, the design must supply a low-noise reference externally, which adds a component but gives better flexibility for shared references across multiple analog domains.
おすすめ
Automotive Sensor and Telemetry
The MCP3464-E/ST carries an automotive temperature grade designation per distributor listings, making it a reasonable candidate for vehicle telemetry modules that must digitize multiple low-speed sensor channels such as pressure, position, and battery-state inputs. Four channels in a single 20-pin TSSOP keep the board area small and reduce the number of external multiplexers and reference buffers. The 3 V operating supply matches typical body-electronics rails derived from 12 V systems after regulation. A key design consideration is that automotive designs should verify the exact AEC-Q100 qualification status and temperature range in the manufacturer documentation, since the reference generator and analog front-end tolerances strongly affect measurement accuracy over vehicle temperature extremes.
おすすめ
Energy Metering and Power Measurement
Energy-metering designs benefit from the MCP3464-E/ST because 16-bit delta-sigma resolution with digital decimation yields excellent linearity and noise rejection for slowly varying signals such as shunt-derived current, DC bus voltage, and temperature compensation channels. Four channels allow simultaneous monitoring of load current, supply voltage, and auxiliary sensing without time-multiplexing artifacts in the power calculation. The 3 V supply and TSSOP-20 footprint align with compact metering modules that must fit behind a DIN rail or in a smart-meter enclosure. The main design tradeoff is that the missing internal voltage reference demands a clean external reference, so reference stability budgeting and post-calibration of gain error are essential for class-level metering accuracy.
おすすめ
Precision Data Acquisition Modules
The MCP3464-E/ST is a natural fit for compact multi-channel data-acquisition modules used in laboratory and field instrumentation, where 16-bit resolution, four inputs, and a 20-pin TSSOP package deliver high channel density per square centimeter of PCB. The delta-sigma front end removes much of the wideband noise that would otherwise require expensive post-amplification filtering, and the digital decimation filter reduces the effective bandwidth presented to the host processor. Because the converter is not the fastest in its class, applications should sample at a rate matched to the signal bandwidth and use the conversion-complete status or data-ready signal for synchronous acquisition. Supply decoupling and analog grounding must be planned early for stable conversion results.
おすすめ
Test and Measurement / Portable Instrumentation
Portable test equipment and handheld meters can use the MCP3464-E/ST to digitize up to four low-level analog channels at 16-bit resolution from a single 3 V-powered IC, which supports battery-operated product designs where every milliamp matters. The low-noise delta-sigma architecture benefits accuracy when measuring thermocouple, strain, or resistive bridge sensors whose full-scale signals are only a few millivolts. Its TSSOP-20 package keeps the analog section compact alongside a microcontroller and display. Designers should account for the converter's conversion latency when sequencing the analog multiplexer and should place input protection and filtering close to the pins to avoid high-impedance node pickup of switching noise from the digital section.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: MCP3464-E/ST — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | MCP3464R-E/ST | MCP3464RT-E/ST | MCP3462-E/ST | MCP3561RT-E/ST | MCP3461T-E/ST |
|---|---|---|---|---|---|---|
| Package | TSSOP-20 (ST) | TSSOP-20 (ST) - same | TSSOP-20 (ST) - same | TSSOP-20 (ST) - same | TSSOP-20 (ST) - same | TSSOP-20 (ST) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit |
| Number of Input Channels | 4 | 4 | 4 | 2 (-50%) | 2 (-50%) | 1 (-75%) |
| Converter Type | Delta-Sigma | Delta-Sigma | Delta-Sigma | Delta-Sigma | Delta-Sigma (2-channel single ADC) | Delta-Sigma |
| Number of Terminals | 20 | 20 | 20 | 20 | 20 | 20 |
| Terminal Form | Gull Wing | Gull Wing | Gull Wing | Gull Wing | Gull Wing | Gull Wing |
主な差別化要因
- Four-channel 16-bit delta-sigma conversion in a single 20-pin TSSOP （vs MCP3461T-E/ST)
- Cost-optimized option when an external reference already exists （vs MCP3464R-E/ST)
- Same 20-TSSOP footprint across the Microchip delta-sigma family for PCB reuse （vs MCP3462-E/ST)
- Automotive temperature grade availability （vs MCP3561RT-E/ST)
設計ノート
The MCP3464-E/ST operates from a 3 V rail, so supply routing must deliver a clean 3 V to the device with low impedance between the supply pin and the local decoupling network. Place the closest bypass capacitor directly at the supply pin and connect its ground return to the quiet analog ground plane rather than through the switching return path. Because there is no internal voltage reference on the MCP3464, an external low-noise reference must be filtered and decoupled separately; reference noise appears directly as conversion noise and is not removed by the delta-sigma decimation filter.
Analog input traces on a 16-bit delta-sigma converter are high-impedance nodes and act as antennas for switching noise from the host MCU and any digital peripherals. Route inputs as short as possible, guard them with a grounded trace, and place input RC anti-alias filters close to the pins. Keep the analog and digital ground returns connected at a single point near the converter's ground pin, and place the analog section away from fast-switching nodes such as crystal and SPI lines. On a TSSOP-20 footprint with 0.65 mm pitch, keep copper pours continuous under the device to improve thermal performance without cutting the analog ground path.
Two mistakes are common when migrating from the MCP3464R to the MCP3464-E/ST. First, the MCP3464 lacks the onboard voltage reference, so a REF/REFP connection that was left unpopulated on an R-version design will produce invalid conversions on the MCP3464 - populate an external reference or re-select the R version. Second, the MCP3464R is explicitly stated by Microchip to be the preferred pin-compatible part for new designs; if the design can accept the internal reference, choosing MCP3464R-E/ST reduces BOM count and reference-routing risk with no software change.
Conversion accuracy is dominated by the analog front end, not the converter itself. Size the anti-alias filter so that its corner frequency is comfortably above the highest signal of interest but low enough to attenuate switching noise entering from adjacent digital circuitry. Because the delta-sigma digital decimation filter rejects out-of-band noise but not in-band noise, out-of-band switching artifacts around the decimation band must be handled by the analog filter. Verify gain and offset error in production calibration, and confirm the final code width matches the required 16-bit accuracy target in the datasheet conversion timing settings.
コンプライアンス情報
Distributor listings classify the MCP3464-E/ST as an automotive temperature grade part, but explicit RoHS, REACH, and AEC-Q100 qualification statements were not present in the verified web data and are therefore reported as unknown. Confirm compliance on the Microchip product page and the current manufacturer material declaration before release.
