MCP3008-I/P - 10-Bit 8-Channel 200ksps ADC | Microchip
N.º de pieza: MCP3008-I/P ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $3.95 | $3,95 |
| 10 | $3.65 | $36,50 |
| 100 | $3.15 | $315,00 |
| 500 | $2.75 | $1.375,00 |
| 1.000 | $2.45 | $2.450,00 |
MCP3008-I/P Descripción general
An ADC converts an analog voltage into a numeric value for processing by a microcontroller or other digital controller. The MCP3008 belongs to the SAR ADC hierarchy and includes an on-chip sample-and-hold circuit, making it suitable for embedded measurement systems that need moderate speed and resolution without a complex high-resolution converter.
Key features include 10-bit resolution, eight programmable analog inputs, four pseudo-differential channels, SPI-compatible communication, and operation from 2.7 V to 5.5 V. The verified product listing identifies a maximum conversion rate of 200 kSPS, while the listed operating temperature range is -40°C to +85°C. Input channels can be configured for single-ended sampling or paired pseudo-differential measurements.
The MCP3008 uses successive approximation to acquire an analog input and present the result through its serial interface. Its 16-pin PDIP format is useful for prototyping, through-hole educational projects, and systems where a socketed DIP package is preferred. The device also supports low-power operation, making it relevant to battery-powered embedded control applications.
Typical uses include Raspberry Pi analog sensor interfaces, temperature and potentiometer measurement, industrial control panels, light-to-digital sensing, and general embedded data acquisition. The SPI interface allows a host controller to select an input channel and read the conversion result without using a parallel data bus.
A key design consideration is the reference voltage. The ADC conversion scale depends on the supplied reference and supply arrangement, so analog signal range, grounding, decoupling, and SPI wiring should be checked against the manufacturer datasheet. This page combines verified manufacturer and distributor information with practical integration guidance for engineers.
Alternativas directas para MCP3008-I/P — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
MCP3008-I/P
✅ Sustitución directa✓ En stock
$2.45 / unidad
Ver hoja de datos →MCP3008-I/P
✅ Sustitución directa✓ En stock
$2.45 / unidad
Ver hoja de datos →MCP3008-I/P
✅ Sustitución directa✓ En stock
$2.45 / unidad
Ver hoja de datos →MCP3008-I/P Valores máximos y características eléctricas
| ADC Resolution | 10 bit |
| Input Channels | 8 single-ended or 4 pseudo-differential pairs |
| Frecuencia de muestreo | 200 kSPS |
| Architecture | Successive approximation register (SAR) |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Serial Interface | SPI-compatible serial interface |
| Encapsulado | 16-pin PDIP, 0.300 in (7.62 mm) pitch |
| Temperatura de funcionamiento | -40°C to +85°C |
| Input Configuration | Programmable single-ended or pseudo-differential inputs |
| On-Chip Sample-and-Hold | Yes |
| Package Type | PDIP |
| Tipo de montaje | Through-hole |
| Nominal Application | Embedded control and data acquisition |
| Differential Linearity | ±1 LSB maximum |
| Integral Linearity | ±1 LSB maximum for MCP3008 |
| Conversion Interface | 4-wire SPI-compatible serial conversion |
Configuración de pines de MCP3008-I/P
| Pin 1 | CS — Chip-select input |
| Pin 2 | DIN — Serial data input |
| Pin 3 | DOUT — Serial data output |
| Pin 4 | CLK — Serial clock input |
| Pin 5 | GND — Ground reference |
| Pin 6 | CH0+ — Analog input 0 positive or single-ended channel 0 |
| Pin 7 | CH0- — Analog input 0 negative or pseudo-differential pair 0 |
| Pin 8 | CH1+ — Analog input 1 positive or single-ended channel 1 |
| Pin 9 | CH1- — Analog input 1 negative or pseudo-differential pair 1 |
| Pin 10 | CH2+ — Analog input 2 positive or single-ended channel 2 |
| Pin 11 | CH2- — Analog input 2 negative or pseudo-differential pair 2 |
| Pin 12 | CH3+ — Analog input 3 positive or single-ended channel 3 |
| Pin 13 | CH3- — Analog input 3 negative or pseudo-differential pair 3 |
| Pin 14 | VREF — Reference voltage input |
| Pin 15 | AGND — Analog ground |
| Pin 16 | VDD — Positive supply voltage |
Aplicaciones típicas
MCP3008-I/P es adecuado para 7 aplicacións: Raspberry Pi Sensor Interface, Temperature and Potentiometer Monitoring, Industrial Control Panel, Light and Environmental Sensing, Battery-Powered Embedded Measurement, Educational and Prototype Data Acquisition, Analog Control Front End.
Raspberry Pi Sensor Interface
The MCP3008-I/P is useful for adding analog sensing to a Raspberry Pi or similar host because it provides eight single-ended input channels and an SPI-compatible interface. A host can select a channel, initiate conversion, and read the digital result for sensors such as potentiometers, LDR light detectors, or analog temperature probes. Its 10-bit resolution and 200 kSPS capability are more than adequate for many slowly changing measurements. The circuit must include compatible logic levels, a common ground, and careful routing from the analog inputs to the ADC.
Recomendado
Temperature and Potentiometer Monitoring
The MCP3008-I/P can monitor multiple potentiometers or analog temperature sensors in an embedded control system. Eight single-ended channels reduce the number of separate ADC packages when several resistive dividers need measurement. The 10-bit conversion result provides 1024 digital codes across the usable input range, while the SAR architecture supports predictable sampling behavior. For accurate results, keep sensor excitation and signal grounds close to the converter, bypass the supply near the IC, and calibrate offset and gain against the system reference.
Recomendado
Industrial Control Panel
MCP3008-I/P is suitable for low-speed analog monitoring in an industrial control panel when operating conditions remain within the verified -40°C to +85°C range. It can sample setpoints, sensor outputs, and resistive controls through its eight single-ended inputs, then transmit readings over SPI to a controller. The device's small PDIP package is convenient for through-hole prototype and repair assemblies. Production designs should add appropriate protection, filtering, isolation, and surge handling because the ADC itself is not a complete industrial front end.
Recomendado
Light and Environmental Sensing
The MCP3008-I/P can digitize outputs from LDR dividers, humidity sensors, and other resistive environmental sensors. Multiple single-ended inputs allow several locations or sensor types to share one converter, reducing system complexity. The 200 kSPS maximum rate is substantially above the bandwidth required by many environmental variables, making the ADC's sampling capability more than adequate. Place resistive dividers near the ADC when possible, keep high-current switching circuitry away from the inputs, and calibrate readings if absolute measurement accuracy is required.
Recomendado
Battery-Powered Embedded Measurement
The MCP3008-I/P's low-power operation makes it relevant to battery-powered embedded measurement systems. It can remain connected to slow-changing sensors while a low-power microcontroller wakes periodically, selects one of eight channels, performs a conversion, and powers down or returns to sleep. The device's 2.7 V minimum supply supports lower-voltage embedded designs, but the complete battery platform must account for the sensor, regulator, and host-controller currents. Verify standby and active current values in the manufacturer datasheet before estimating battery life.
Recomendado
Educational and Prototype Data Acquisition
The 16-pin PDIP package and SPI interface make MCP3008-I/P approachable for educational prototypes and through-hole data-acquisition boards. Students can connect multiple analog sensors, use a microcontroller or single-board computer to issue conversion commands, and observe 10-bit digital values in software. Its eight single-ended inputs simplify wiring experiments compared with using several single-channel converters. Because the package is through-hole, it is easy to socket on a prototype board, while the same electrical design should be reviewed before copying into a compact production PCB.
Recomendado
Analog Control Front End
MCP3008-I/P can measure control feedback from resistive dividers, potentiometers, or conditioned sensor outputs in a small embedded controller. Four pseudo-differential pairs are useful when a measured signal has a related return or reference that can reject common-mode variation. The ADC's SPI output leaves the controller free to perform control calculations and update a display or actuator. Design the analog front end so the input remains within the reference range and does not exceed the absolute maximum ratings defined in the manufacturer datasheet.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para MCP3008-I/P — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MCP3008-I/P | MCP3008-I/P | MCP3008-I/P |
|---|---|---|---|---|
| ADC Resolution | 10 bit | 10 bit | 10 bit | 10 bit |
| Input Channels | 8 single-ended or 4 pseudo-differential pairs | 8 single-ended or 4 pseudo-differential pairs | 8 single-ended or 4 pseudo-differential pairs | 8 single-ended or 4 pseudo-differential pairs |
| Sampling Rate | 200 kSPS | 200 kSPS | 200 kSPS | 200 kSPS |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Architecture | Successive approximation register (SAR) | SAR | SAR | SAR |
| Interface | SPI-compatible | SPI-compatible | SPI-compatible | SPI-compatible |
| Package | 16-pin PDIP, 0.300 in (7.62 mm) | 16-pin PDIP, 0.300 in (7.62 mm) | 16-pin PDIP, 0.300 in (7.62 mm) | 16-pin PDIP, 0.300 in (7.62 mm) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Operating Temperature | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C |
Diferenciadores clave
- Through-hole package for prototype and repair flexibility (frente a MCP3008-I/SL)
- Eight-channel single-ended input capability (frente a MCP3008-I/P)
- Moderate speed and resolution for embedded measurement (frente a MCP3008-I/P)
Notas de diseño
Route analog inputs, VREF, and AGND as compact, quiet nets, keeping them away from SPI clock and switching-node traces. Place the input and reference components near the MCP3008-I/P rather than at the sensor connector. A solid ground plane and short return paths reduce conversion errors that can otherwise appear as channel-to-channel variation. Confirm the final pin assignments against the manufacturer datasheet before fabrication.
Use a supply within the verified 2.7 V to 5.5 V range and bypass VDD locally with the capacitance recommended by the manufacturer datasheet. Keep sensor excitation switching regulators and digital clocks physically separated from the analog inputs. The verified snippets do not provide exact active or standby current, so power-budget calculations should use the manufacturer datasheet values rather than an estimated current.
Do not treat MCP3008-I/SL as a drop-in replacement: the verified comparison identifies MCP3008-I/SL as SOIC while MCP3008-I/P is PDIP. Also avoid assuming that MCP3208-CI/P is interchangeable without checking its pinout and electrical requirements. Confirm reference polarity, input range, SPI mode, channel-selection timing, and absolute maximum ratings before substituting any part.
For Raspberry Pi or microcontroller systems, connect the MCP3008 SPI signals with clean, short traces and define a common ground between the host and ADC. Avoid long unprotected sensor wires where possible; add filtering or shielding at the connector if the environment contains motors or switching equipment. Software should also discard or average readings when sensor noise exceeds the application's required measurement resolution.
Información de cumplimiento
The supplied verified data does not state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification status. Compliance fields are therefore reported as unknown rather than inferred.
