MCP3004T-I/SL - 10-Bit 4-Channel SAR ADC | Microchip
料号： MCP3004T-I/SL ✓ 量产中MCP3004T-I/SL 概述
An ADC converts an analog voltage into a numeric value for processing by a microcontroller or other digital controller. The MCP3004 belongs to the SAR ADC hierarchy, where an internal sample-and-hold circuit samples the input before a successive-approximation conversion produces a 10-bit result. This architecture is appropriate for low-power industrial control, sensor measurement, and educational embedded systems where moderate resolution and straightforward serial interfacing are more important than very high sampling rates.
Key device characteristics include a maximum sampling rate of 200 ksps, compatibility with SPI modes 0,0 and 1,1, and programmable single-ended or pseudo-differential channel configurations. According to the manufacturer datasheet, differential nonlinearity and integral nonlinearity are each limited to a maximum of ±1 LSB. Typical standby current is only 5 nA, while typical active current is 320 µA, helping preserve system power budget when the converter operates intermittently.
The MCP3004 uses a four-wire serial interface comprising chip select, clock, serial input, and serial output. The sample-and-hold function is integrated on-chip, and the MCP3004 variant provides four analog input channels rather than the eight channels available in the related MCP3008 family. Differential and pseudo-differential operation can improve signal-to-noise performance compared with referencing the negative input directly to ground, although careful analog grounding and input conditioning remain important.
Typical applications include industrial process monitoring, battery-powered instrumentation, temperature and potentiometer acquisition, laboratory measurement systems, and compact control boards. The 2.7 V minimum supply voltage supports integration with modern 3.3 V embedded systems, while operation up to 5.5 V provides compatibility with conventional 5 V designs. The SPI interface allows the converter to share a controlled bus with other compatible peripherals.
Designers should treat the analog input and reference pins as sensitive signal paths. Keep the analog source impedance within the converter’s acquisition limits, place input and reference decoupling close to the device, and route the analog ground return separately from switching-current paths where practical. Verify the selected reference voltage, channel configuration, and digital timing against the manufacturer datasheet before establishing the system acquisition sequence.
This product page combines the MCP3004T-I/SL electrical characteristics, package details, application guidance, drop-in comparison information, and PCB design considerations in a form intended to accelerate component selection and first-board bring-up. It also highlights the distinction between the 4-channel MCP3004 and the 8-channel MCP3008, the importance of reference stability, and the operating constraints associated with its 200 ksps SAR conversion architecture.
直接替换替代料： MCP3004T-I/SL ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MCP3004T-I/SL （相同外形与封装尺寸） ——差异在于 Digital Interface.
MCP3004T-I/SLVAO
✅ 直接替换📋 参考替代料（不在目录中）
MCP3004-I/SL
✅ 直接替换联系询价
查看数据手册 →MCP3004T-I/SL 最大额定值与电气特性
| 分辨率 | 10 bit |
| Analog Input Channels | 4 channels |
| Input Configuration | 2 single-ended inputs or 1 pseudo-differential input pair |
| Conversion Architecture | Successive approximation register (SAR) |
| Maximum Sampling Rate | 200 ksps |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Typical Active Current | 320 µA |
| Typical Standby Current | 5 nA |
| Integral Nonlinearity | ±1 LSB maximum |
| Differential Nonlinearity | ±1 LSB maximum |
| Digital Interface | SPI-compatible 4-wire serial interface |
| Supported SPI Modes | Modes 0,0 and 1,1 |
| On-Chip Sample-and-Hold | Yes |
| 封装 | 14-pin SOIC |
| 安装类型 | Surface mount |
MCP3004T-I/SL 引脚配置
| 引脚 1 | CS — Chip-select input |
| 引脚 2 | DIN — Serial data input |
| 引脚 3 | DOUT — Serial data output |
| 引脚 4 | VREF+ — Positive reference voltage input |
| 引脚 5 | VREF- — Negative reference voltage input |
| 引脚 6 | GND — Analog ground |
| 引脚 7 | D0 — Analog input channel 0 |
| 引脚 8 | D1 — Analog input channel 1 |
| 引脚 9 | D2 — Analog input channel 2 |
| 引脚 10 | D3 — Analog input channel 3 |
| 引脚 11 | VDD — Positive analog supply input |
| 引脚 12 | CLK — Serial clock input |
| 引脚 13 | NC — Not connected |
| 引脚 14 | NC — Not connected |
典型应用
MCP3004T-I/SL 适用于 6 应用s: Industrial Process Monitoring, Battery-Powered Instrumentation, Temperature Sensor Acquisition, Potentiometer and Control Inputs, Laboratory Measurement Systems, Educational Embedded Control Boards.
Industrial Process Monitoring
The MCP3004T-I/SL fits industrial process monitoring where two analog sensor signals must be digitized with a compact serial interface. Its 10-bit resolution provides 1,024 code levels, while the 200 ksps SAR conversion rate is more than adequate for many temperature, pressure, and potentiometer measurements. The 2.7 V to 5.5 V operating range supports both 3.3 V control electronics and 5 V instrumentation. Use the pseudo-differential arrangement when the sensor can drive a complementary input pair, and route the reference and analog return paths away from switching nodes to reduce conversion errors.
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Battery-Powered Instrumentation
The MCP3004T-I/SL is appropriate for battery-powered instruments where duty-cycled measurements must balance resolution against energy use. Typical active current is 320 µA and typical standby current is only 5 nA, allowing the converter to remain available without continuously consuming the complete operating current. Its 200 ksps maximum rate supports fast measurements when enabled, while the 2.7 V minimum operating voltage supports low-voltage supply designs. Keep the analog circuitry at the same low-noise reference and ground potential, and activate conversions only as required to maximize battery life.
推荐
Temperature Sensor Acquisition
The MCP3004T-I/SL can acquire temperature signals from resistive sensors when the sensor output is conditioned to remain inside the ADC input range. Two single-ended channels can monitor two probes, or the pseudo-differential configuration can support one sensor with a driven complementary reference. The 10-bit result supports 1,024 discrete levels, while ±1 LSB maximum nonlinearity and ±1 LSB maximum differential nonlinearity define the converter’s stated linearity limits. Use a stable reference, limit source impedance, and acquire after the sensor and input network have settled to obtain repeatable temperature readings.
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Potentiometer and Control Inputs
The MCP3004T-I/SL is well suited to reading potentiometer positions and other resistive dividers in embedded control systems. Two single-ended channels can represent two independent control inputs without requiring multiplexing components outside the converter. Its integrated sample-and-hold function captures each analog input before the 10-bit SAR conversion, and the SPI-compatible interface transfers the result to a host controller. For reliable readings, keep the divider output within the input range, minimize resistance to keep source impedance acceptable, and use a dedicated input-ground return where practical.
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Laboratory Measurement Systems
The MCP3004T-I/SL can serve as the measurement front end in compact laboratory instruments that require two analog inputs and a simple digital interface. The 200 ksps conversion capability supports rapid acquisition, while SPI modes 0,0 and 1,1 provide straightforward connection to compatible controllers. Differential or pseudo-differential wiring can reduce common-mode disturbance when the source supports balanced drive. For laboratory accuracy, prioritize reference stability, short analog traces, controlled grounding, and input protection rather than relying on the converter’s 10-bit resolution alone.
推荐
Educational Embedded Control Boards
The MCP3004T-I/SL is useful in educational embedded-control platforms because it combines a recognizable SPI interface, four analog channels, and low standby current in a 14-pin SOIC package. Students can use the two single-ended inputs for potentiometers or sensor outputs and connect the pseudo-differential mode to explore balanced measurements. The 2.7 V to 5.5 V supply range simplifies integration with common microcontroller development boards. Firmware should implement the manufacturer’s acquisition timing, clearly define the reference voltage, and convert the 10-bit result into engineering units with explicit calibration.
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工程参考数据： MCP3004T-I/SL ——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 | MCP3004T-I/SLVAO | MCP3004-I/SL |
|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-pin SOIC | 14-pin SOIC | 14-pin SOIC |
| Resolution | 10 bit | 10 bit | 10 bit |
| Maximum Sampling Rate | 200 ksps | 200 ksps | 200 ksps |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Input Configuration | 2 single-ended inputs or 1 pseudo-differential input pair | 2 single-ended inputs or 1 pseudo-differential input pair | 2 single-ended inputs or 1 pseudo-differential input pair |
| Architecture | Successive approximation register (SAR) | Successive approximation register (SAR) | Successive approximation register (SAR) |
| Digital Interface | SPI-compatible 4-wire serial interface | SPI-compatible 4-wire serial interface | SPI-compatible 4-wire serial interface |
关键差异点
- Matches the principal electrical performance of the listed same-package alternatives （对比 MCP3004T-I/SLVAO)
- Provides the same core conversion function in the same SOIC footprint （对比 MCP3004-I/SL)
- Uses a compact four-channel SAR ADC for low-power embedded measurement （对比 MCP3008)
设计说明
Place the MCP3004T-I/SL close to the analog source and place its decoupling capacitor directly between VDD and the analog ground reference. Keep the VREF+ and VREF- routes short, use a low-impedance reference source, and avoid routing analog inputs beneath digital clock or SPI traces. The SPI interface can operate at 200 ksps, so clock-edge crosstalk into the reference or input network can create conversion error even when the digital result itself is read correctly.
Do not treat the four MCP3004 analog terminals as four independent single-ended measurements in every configuration. The device supports two single-ended inputs or one pseudo-differential pair. Connecting two channels in differential mode is therefore a valid measurement, but grounding the negative-side terminal directly may remove the common-mode rejection benefit of pseudo-differential operation. Confirm the input range, common-mode limits, source impedance, and sampling timing against the manufacturer datasheet before committing the analog front end.
Separate analog and digital return currents wherever the board topology permits. Terminate SPI signals at the controller or peripheral receiving the edge, keep the clock trace away from VREF and D0-D3, and use a continuous ground reference beneath the analog section. If the converter sits near a switching regulator or relay driver, route the sensitive analog signals before those power stages and avoid sharing narrow neck points in the ground plane. These steps reduce reference disturbance and improve repeatability across operating conditions.
Use a supply design that keeps the converter continuously inside its 2.7 V to 5.5 V operating range, including startup and transient conditions. The typical active current is 320 µA and typical standby current is 5 nA, but these figures do not include the reference current or external analog circuitry. Check whether VREF- should be tied to ground for the intended measurement topology and ensure the resulting reference arrangement satisfies the absolute input limits in the manufacturer datasheet.
合规信息
The manufacturer product page confirms the active MCP3004 family but the available technical snippets do not state the target part's RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 status is not applicable because MCP3004T-I/SL is not identified as an automotive-qualified ordering variant.