MAX120EAG+ 12-Bit 500ksps SAR ADC | Maxim Integrated
MPN: MAX120EAG+ ✓ Hoạt độngMAX120EAG+ Tóm tắt
An ADC is a data-conversion semiconductor that transforms a continuously varying voltage into a numeric code suitable for processing by a microcontroller, DSP, FPGA, or embedded control system. The MAX120EAG+ uses a successive-approximation architecture, commonly called SAR, which compares the input voltage with a sequence of internally generated reference levels. Its 500ksps maximum sampling capability makes it appropriate for measurement systems that require faster conversion than general-purpose slow ADC functions.
The main device characteristics are a resolution of 12 bits, one analog input, a 500ksps conversion rate, and a 24-pin SSOP package. The listings also identify the part as including track-and-hold and reference circuitry. These features are relevant in applications such as industrial process monitoring, instrumentation, sensor signal acquisition, data acquisition systems, and embedded control platforms where a compact single-channel converter is needed. The manufacturer family description identifies the MAX120 series as 500ksps, 12-bit ADCs with track-and-hold and reference functions.
The MAX120EAG+ designation uses Maxim Integrated’s E-grade industrial ordering convention and the AG package suffix for a 24-pin SSOP. The verified product listings consistently describe the same 12-bit, single-input, SAR ADC configuration. Because the available manufacturer and distributor references identify the package, architecture, resolution, sampling rate, input count, temperature grade, and core functions, designers can use those characteristics to establish fit before reviewing the detailed electrical limits and pin assignments in the datasheet.
For new layouts, place the converter close to the analog source and preserve a short, low-noise analog path to the input pin. Provide the required bypass and reference-decoupling capacitors exactly as specified in the manufacturer datasheet, and route digital output and interface traces away from sensitive input and reference nodes. The single-input architecture is appropriate when multiplexing, gain control, and signal conditioning are handled by external analog circuitry.
This page summarizes the verified MAX120EAG+ identity and combines package, application, design, and drop-in replacement guidance with the manufacturer datasheet link. It also highlights the MAX120CAG+ as a documented same-family, same-package replacement candidate, while distinguishing what is known from what must be checked in the final datasheet before layout release.
Bộ thay thế dễ dàng lắp đặt cho MAX120EAG+ — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MAX120EAG+ (cùng hình factor và footprint) — khác nhau ở Package, Resolution.
MAX120CAG+
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Xem tài liệu →MAX120EAG+ Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 12 bit |
| Tỷ lệ lấy mẫu | 500ksps |
| Architecture | Successive approximation (SAR) |
| Analog Input Count | 1 input |
| Track-and-Hold | Included |
| Reference | Integrated reference |
| Hộp | 24-pin SSOP |
| Terminal Count | 24 terminals |
| Terminal Form | Gull wing |
| Package Shape | Rectangular |
| Temperature Grade | Industrial |
| Product Type | Single-channel ADC |
| Conversion Technology | Successive approximation |
| Data Acquisition Category | Analog-to-digital converters |
Hướng dẫn cấu hình chân MAX120EAG+ rectangular
Cấu hình chân cho MAX120EAG+ (rectangular gói). Thành phần số hiệu này có chân đầu vào, đầu ra và nguồn cung cấp. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết cấu hình chân bù, bù trừ và chân kích hoạt. Hoàn hảo cho điều kiện tín hiệu và mạch khuếch đại.
Không có dữ liệu chân cụ thể sẵn có cho MAX120EAG+.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
MAX120EAG+ phù hợp cho 6 Áp dụngs: Industrial Process Measurement, Sensor Signal Acquisition, Data Acquisition Systems, Test and Measurement Instrumentation, Embedded Control Systems, Communications and RF Monitoring.
Industrial Process Measurement
The MAX120EAG+ fits single-channel industrial process measurement when the system needs 12-bit resolution and a maximum sampling rate of 500ksps from a compact 24-pin SSOP ADC. The device’s SAR architecture, track-and-hold function, and integrated reference allow a conditioned sensor or control voltage to be converted into a 12-bit code for a controller or data logger. Because only one analog input is listed, multiplexed channels will require external switching or channel-selection circuitry. Confirm the input range, supply limits, reference accuracy, and operating-temperature limits in the MAX120 datasheet before assigning the component to a production measurement channel.
Được đề xuất
Sensor Signal Acquisition
The MAX120EAG+ is suitable for acquiring a conditioned analog sensor signal when 12-bit resolution and a 500ksps sampling capability are sufficient. Place the converter near the sensor-conditioning stage and keep the analog trace short to reduce susceptibility to injected noise. The integrated track-and-hold and reference functions support a compact acquisition front end, although external gain, filtering, and offset correction may still be required. Verify input common-mode range and source impedance limits in the datasheet, and calibrate the complete channel against the required measurement accuracy rather than relying on nominal bit resolution alone.
Được đề xuất
Data Acquisition Systems
The MAX120EAG+ can serve as the single-channel conversion element in a compact data-acquisition front end that must sample at up to 500ksps and retain 12-bit output resolution. Its SAR conversion architecture is appropriate for repeatedly measuring an analog waveform and transferring the resulting code to a digital controller. The 24-pin SSOP package supports compact board layouts, but the analog reference and bypass network still require careful placement. For systems requiring simultaneous channels, use an external analog multiplexer or consider a multichannel ADC, since the MAX120EAG+ is identified as having one analog input.
Được đề xuất
Test and Measurement Instrumentation
The MAX120EAG+ is appropriate for bench and panel instrumentation that must digitize one conditioned analog channel at up to 500ksps. A 12-bit code can represent the input across 4096 quantization levels, making it suitable for position, level, and general waveform measurements where higher resolution is not essential. The converter’s integrated track-and-hold and reference reduce the number of separate support functions in the signal path. For precision laboratory results, include calibration, reference-noise analysis, grounding, and shielding in the design because nominal resolution alone does not establish total measurement uncertainty.
Được đề xuất
Embedded Control Systems
The MAX120EAG+ can serve as an analog measurement front end for an embedded controller monitoring a single feedback or control signal. Its 500ksps maximum sampling rate provides headroom for fast feedback loops, while 12-bit resolution supplies a practical balance between resolution, interface rate, and system complexity. Connect the digital results to the controller through the interface documented in the MAX120 datasheet, and isolate analog and return paths to prevent control and processor noise from affecting conversion accuracy. The system designer should also include gain and protection appropriate to the sensed voltage range before connecting it to the single ADC input.
Được đề xuất
Communications and RF Monitoring
The MAX120EAG+ may be used in communications equipment or RF monitoring systems to capture a rectified or otherwise conditioned envelope or control voltage. The 500ksps rate can sample faster than many slow monitoring loops, while 12-bit resolution can provide useful amplitude detail. Success depends on placing the converter behind appropriate gain, filtering, attenuation, and RF protection; the ADC should not connect directly to an unrestricted RF input. Maintain separation between the analog measurement node and digital interface lines, and follow the package pin guidance in the MAX120 datasheet to minimize coupling and ground-current effects.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MAX120EAG+ — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MAX120CAG+ |
|---|---|---|
| Package | 24-pin SSOP | 24-pin SSOP |
| Brand | Maxim Integrated | Maxim Integrated |
| Resolution | 12 bit | 12 bit |
| Sampling Rate | 500ksps | 500ksps |
| Architecture | Successive approximation (SAR) | Successive approximation (SAR) |
| Analog Input Count | 1 input | 1 input |
| Track-and-Hold | Included | Included |
| Reference | Integrated reference | Integrated reference |
Bảo phân biệt quan trọng
- Exact same-family documented replacement path (vsMAX120CAG+)
- Single-channel integration simplifies one-signal measurement (vsMAX120CAG+)
- Integrated acquisition support reduces external functions (vsMAX120CAG+)
Ghi chú thiết kế
Place the input bypass capacitor and reference-decoupling capacitor directly beside the corresponding MAX120EAG+ pins, using the values and connection arrangement shown in the manufacturer datasheet. Keep the analog input trace short and route it away from digital output and interface traces. Because the converter uses track-and-hold and an integrated reference, the reference and analog return paths should remain quiet and continuous. Confirm the exposed connection requirements and dimensions from the 24-pin SSOP package drawing before releasing the PCB artwork.
Treat the single analog input as a high-impedance measurement node and account for source impedance, acquisition time, and the 500ksps conversion limit. A source with excessive impedance may not settle to the required accuracy before conversion. Place any input filter, gain stage, or protection network close to the ADC and verify the resulting bandwidth against the sampling rate. Do not assume that the 12-bit resolution alone guarantees 12-bit system accuracy; reference noise, offset, gain error, grounding, and calibration all contribute to the final error budget.
Avoid treating the MAX120CAG+ as an automatic production substitute solely because both orderable devices use the 24-pin SSOP package. Compare the complete ordering tables, pin names, reference configuration, electrical limits, temperature grade, and applicable errata before making the change. Also do not connect external analog signals until the input range, common-mode limits, and absolute maximum ratings have been checked. A documented cross-reference should be followed by schematic review, prototype measurement, and supplier quality review.
Thông tin tuân thủ
The verified product listings identify industrial temperature grade but do not state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 status. Compliance must be confirmed for the exact orderable MPN.