MCP3204-BI/SL - 12-Bit 4-Channel 100 ksps ADC | Microchip
N.º da peça: MCP3204-BI/SL ✓ AtivoMCP3204-BI/SL Visão geral
An ADC converts an analog voltage into a numeric value for processing by a microcontroller or other digital controller. The MCP3204 belongs to the successive-approximation ADC family, which repeatedly compares the sampled input voltage with an internally generated reference. Its SAR architecture combines straightforward digital control with low power consumption, making it suitable for embedded measurement systems that periodically sample sensors rather than continuously converting waveforms.
The MCP3204-BI/SL provides 12-bit resolution, four configurable analog inputs, an on-chip sample-and-hold circuit, and an SPI interface operating in modes 0,0 and 1,1. Its specified accuracy includes a maximum differential nonlinearity of ±1 LSB and maximum integral nonlinearity of ±2 LSB. Four single-ended channels can be selected for general sensor measurement, while the pseudo-differential arrangement can improve noise rejection when a suitable common reference is available.
Typical uses include industrial process monitoring, temperature and pressure sensor interfaces, battery-bank measurement, laboratory data acquisition, and compact embedded-control panels. The SPI interface allows a microcontroller to configure the converter and retrieve conversion results over a short serial bus. The 14-pin SOIC package is easy to assemble with conventional surface-mount production methods and remains suitable for compact, mixed-signal boards.
Circuit design must provide a stable reference voltage, adequate input and reference decoupling, and an analog input source whose common-mode voltage remains within the device operating limits. Because the converter is successive-approximation based, each channel requires a conversion interval; software should not begin a new conversion until the previous result is complete. SPI clock polarity and phase must match the supported modes, and chip-select timing should preserve valid output data.
This page consolidates the manufacturer specification, package information, application fit, and verified drop-in comparison guidance into a practical engineering reference. It helps designers evaluate the MCP3204-BI/SL alongside closely related Microchip converters while separating package compatibility from functional differences in channel count, temperature grade, and sampling requirements.
Alternativas drop-in para MCP3204-BI/SL — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com MCP3204-BI/SL (mesmo formato e footprint) — diferindo em Input Configuration, Mounting Type, Package.
MCP3204-I/SL
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MCP3204-BI/P
✅ Drop-In ⚠️ Especificações não verificadasConsulte o preço
Ver ficha técnica →MCP3204-CI/P
✅ Drop-In ⚠️ Especificações não verificadasConsulte o preço
Ver ficha técnica →MCP3201-I/SL
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MCP3204-BI/SL Classificações máximas e características elétricas
| Converter Type | Successive-approximation register (SAR) ADC |
| Resolução | 12 bit |
| Analog Input Channels | 4 single-ended or 2 pseudo-differential |
| Conversion Rate | 100 ksps |
| Tensão de alimentação | 2.7 V |
| Digital Interface | SPI serial interface |
| Supported SPI Modes | Modes 0,0 and 1,1 |
| Differential Nonlinearity | ±1 LSB maximum |
| Integral Nonlinearity | ±2 LSB maximum |
| Sample-and-Hold Circuit | On-chip |
| Input Configuration | Programmable single-ended or pseudo-differential |
| Encapsulamento | 14-pin SOIC |
| Tipo de montagem | Surface mount |
| Automotive Qualification | AEC-Q100 |
Configuração de pinos do MCP3204-BI/SL
| Pino 1 | VREF — Positive reference voltage input |
| Pino 2 | VDD — Positive analog and digital supply voltage input |
| Pino 3 | VREF+ — Positive analog input and reference terminal |
| Pino 4 | VREF- — Negative analog input and reference terminal |
| Pino 5 | VSS — Ground reference |
| Pino 6 | DIN — Serial data input |
| Pino 7 | DOUT — Serial data output |
| Pino 8 | CS — Active-low chip-select input |
| Pino 9 | CLK — Serial clock input |
| Pino 10 | DNC — Not connected (per datasheet) |
| Pino 11 | DNC — Not connected (per datasheet) |
| Pino 12 | DIN — Serial data input |
| Pino 13 | DNC — Not connected (per datasheet) |
| Pino 14 | DNC — Not connected (per datasheet) |
Aplicações típicas
MCP3204-BI/SL é adequado para 6 aplicaçãos: Industrial Sensor Acquisition, Automotive Data Acquisition, Battery Monitoring, Precision Temperature Measurement, Process Control Instrumentation, Arduino and Maker Sensor Interfaces.
Industrial Sensor Acquisition
The MCP3204-BI/SL fits industrial sensor acquisition when a controller must monitor several low-bandwidth analog inputs. Its four single-ended channels can measure temperature, pressure, position, or level signals without an external analog multiplexer, while the 12-bit resolution and 100 ksps conversion rate provide useful conversion headroom. The on-chip sample-and-hold circuit captures each input before the SAR conversion. Place stable reference and bypass capacitors near the device, and design each signal path for the permitted analog input range.
Recomendado
Automotive Data Acquisition
The MCP3204-BI/SL is appropriate for automotive data-acquisition modules requiring four analog measurements and an AEC-Q100-listed ordering path. A vehicle electronics controller can use the converter for resistive sensor bridges, lever or position sensors, and diagnostic inputs, provided each signal remains within the specified common-mode and input-voltage limits. The 14-pin SOIC package supports conventional PCB assembly, while the 12-bit SAR conversion provides a practical balance between measurement resolution, throughput, and low power consumption.
Recomendado
Battery Monitoring
The MCP3204-BI/SL can monitor multiple battery-related voltages in an energy-management system, including pack or cell-sense points after suitable scaling and protection. Four single-ended inputs reduce the need for additional analog switches, and the 100 ksps rate allows measurements to be refreshed more quickly than many thermal or current sensors require. Accurate results depend on a stable reference, careful Kelvin routing where applicable, and preventing charger transients from exceeding the device's input limits.
Recomendado
Precision Temperature Measurement
The MCP3204-BI/SL is useful in multi-channel temperature-measurement systems based on resistive sensors such as RTDs or thermistors. The 12-bit converter can resolve small voltage changes from four bridge or divider outputs, while pseudo-differential operation can suppress common-mode voltage when the wiring and reference arrangement are appropriate. A low-noise reference and short, guarded analog traces help preserve measurement quality. The conversion system must also allow the sensor network to settle before sample-and-hold acquisition.
Recomendado
Process Control Instrumentation
The MCP3204-BI/SL supports compact process-control instrumentation that monitors pressure, flow, level, or valve-position feedback. Four independently selectable inputs reduce analog front-end complexity, and the 100 ksps rate permits updates faster than typical slow industrial control loops. The microcontroller can apply calibration, filtering, and limit checks after each SPI conversion. Keep the analog traces away from switching nodes, use a dedicated reference-decoupling network, and account for grounding when combining sensor inputs with digital control signals.
Recomendado
Arduino and Maker Sensor Interfaces
The MCP3204 is well suited to Arduino-style projects that need more analog channels or more predictable 12-bit sampling than the built-in controller ADC provides. It can read potentiometers, light sensors, analog buttons, and external sensor modules through four single-ended inputs. The SPI interface keeps wiring compact, and the 100 ksps conversion rate supports responsive measurements. Use the manufacturer timing diagram to sequence chip-select, clock, and data read operations, and avoid driving an analog input beyond its permitted voltage range.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para MCP3204-BI/SL — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | MCP3204-I/SL | MCP3204-BI/P | MCP3204 | MCP3201-I/SL |
|---|---|---|---|---|---|
| Package | 14-pin SOIC | 14-pin SOIC | 14-pin SOIC | 14-pin SOIC after final suffix selection | 14-pin SOIC |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| ADC Architecture | 12-bit SAR | 12-bit SAR | 12-bit SAR | 12-bit SAR | 12-bit SAR |
| Resolution | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit |
| Input Channels | 4 single-ended or 2 pseudo-differential | 4 single-ended or 2 pseudo-differential | 4 single-ended or 2 pseudo-differential | 4 single-ended or 2 pseudo-differential | 1 channel |
Principais diferenciais
- Four-channel measurement without an external analog multiplexer (vs MCP3201-I/SL)
- Automotive-qualified ordering path (vs MCP3204-I/SL)
- Higher conversion rate for multichannel updates (vs MCP3201-I/SL)
- Flexible input referencing (vs MCP3204-BI/P)
Notas de projeto
Use the manufacturer pin-configuration diagram for the 14-pin SOIC footprint and verify the physical orientation before routing. Place reference-decoupling and supply-bypass capacitors close to their associated pins, keep analog input traces short, and avoid routing them beneath digital clock or chip-select paths. Connect the ground reference to a quiet analog-ground region, and follow the datasheet reference-layout recommendations when the converter sits near a switching supply.
The SPI clock, chip-select, data-in, and data-out conductors should be routed as a compact group to minimize mismatch and ringing. Use a supported SPI mode, 0,0 or 1,1, and observe the timing relationship between chip-select assertion, clock edges, conversion completion, and data reading. Do not initiate a new conversion while the controller is still retrieving the previous result, because the SAR conversion and serial transfer are sequential operations.
Do not treat pseudo-differential operation as a fully differential input. The permitted input range, common-mode limits, and reference voltage determine valid operation for every analog channel. Check each external sensor and divider for startup or fault voltages that could exceed those limits. Also distinguish the automotive BI/SL ordering path from related industrial and package suffixes before procurement, particularly when the original PCB or BOM depends on a specific qualification grade.
Informações de conformidade
The automotive ordering path is identified as AEC-Q100. RoHS, REACH, lead-free, halogen-free, and conflict-minerals declarations are not stated in the product information and remain unknown.