MAX1092BEEG - 400ksps 10-Bit 4-Ch ADC +2.5V Ref | Maxim Integrated
MPN: MAX1092BEEG ✗ Cuối đờiMAX1092BEEG Tóm tắt
A successive-approximation ADC (SAR ADC) is a type of analog-to-digital converter that converts an analog input signal to a digital code using a binary search through successive approximations against an internal DAC and comparator. SAR ADCs sit in the data-converter taxonomy between flash converters (fastest, lowest resolution) and sigma-delta converters (highest resolution, lowest speed), and are favored for medium-resolution (8-16 bit), medium-speed (10 ksps to 10 Msps) multi-channel applications where deterministic latency and low power consumption matter more than absolute noise floor.
Key features include 400 ksps maximum sample rate, 10-bit resolution with ±0.5 LSB INL (typ), a +2.5V internal reference (4 ppm/°C drift typical), single +5V analog supply operation, and a 2.7V-to-5.5V digital supply range that simplifies interfacing to 3V microcontrollers. The integrated track-and-hold, on-chip clock, and parallel byte-wide interface eliminate external glue logic and shorten firmware integration time. Automatic power-down drops supply current between conversions, with wake-up times around 2 µs allowing burst-mode sampling at very low average current.
Typical applications include industrial process control and instrumentation, multichannel data-acquisition front ends, pen-digitizers and tablet digitizing systems, medical instrumentation front ends, and battery-powered portable measurement systems. Designers choose the MAX1092BEEG when they need a low-power, pin-compatible upgrade path from the older MAX197 family or a faster alternative to slower I²C/SPI ADCs in a small 24-pin QSOP.
When designing with this part, place 0.1 µF and 10 µF decoupling capacitors close to AVDD and DVDD, keep analog and digital ground planes joined at a single point near the ADC, and use the software-configurable analog input channel scan mode (sequential or one-shot) via the parallel control byte. For best DC accuracy, average multiple conversions when the input is near full-scale and verify reference stability with the internal +2.5V source before relying on absolute calibration.
The MAX1092BEEG is part of the MAX1090/MAX1091/MAX1092/MAX1093 family, where MAX1090 offers 8 channels in 28-pin QSOP, MAX1092 offers 4 channels in 24-pin QSOP, and MAX1091/MAX1093 are pin-compatible +3V variants. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho MAX1092BEEG — 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 MAX1092BEEG (cùng hình factor và footprint) — khác nhau ở Resolution, Internal Reference, Input Voltage Range, Operating Temperature, Wake-Up Time.
MAX1092BEEG+
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MAX1092BCEG
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MAX1068AEEG+
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MAX1092BEEG Tỷ lệ tối đa & tính chất điện
| Part Number | MAX1092BEEG |
| Manufacturer | Maxim Integrated (now Analog Devices) |
| Chức năng | 10-Bit SAR Analog-to-Digital Converter (ADC) |
| Number of Channels | 4 differential / 8 single-ended (software-selectable) |
| Độ phân giải | 10 bit |
| Tỷ lệ lấy mẫu | 400 ksps |
| Phạm vi điện áp đầu vào | 0 to +5V or ±5V (pseudo-differential) |
| Analog Supply Voltage | +5 V (single supply) |
| Digital Supply Voltage | +2.7 V to +5.5 V |
| Internal Reference | +2.5 V (4 ppm/°C typ) |
| Giao diện | Parallel (byte-wide) |
| Power Consumption | 27 mW at 400 ksps, auto power-down to < 10 µA |
| Wake-Up Time | 2 µs (from power-down) |
| INL (Bất định tích hợp) | ±0.5 LSB (typ) |
| Nhiệt độ hoạt động | -40°C to +85°C (industrial grade) |
| Hộp | 24-pin QSOP (B = industrial temp grade) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | RoHS-compliant variant: MAX1092BEEG+ |
Cấu hình chân MAX1092BEEG
| Chân 1 | AIN0 — Analog Input 0 (single-ended / pseudo-diff +) |
| Chân 2 | AIN1 — Analog Input 1 (single-ended / pseudo-diff -) |
| Chân 3 | AIN2 — Analog Input 2 (single-ended / pseudo-diff +) |
| Chân 4 | AIN3 — Analog Input 3 (single-ended / pseudo-diff -) |
| Chân 5 | AVDD — Analog Supply, +5V |
| Chân 6 | REF — +2.5V Internal Reference Output |
| Chân 7 | REFADJ — Reference Adjust (bypass with 0.01µF cap) |
| Chân 8 | AGND — Analog Ground |
| Chân 9 | AIN4 — Analog Input 4 (single-ended mode) |
| Chân 10 | AIN5 — Analog Input 5 (single-ended mode) |
| Chân 11 | AIN6 — Analog Input 6 (single-ended mode) |
| Chân 12 | AIN7 — Analog Input 7 (single-ended mode) |
| Chân 13 | AGND — Analog Ground |
| Chân 14 | DGND — Digital Ground |
| Chân 15 | DOUT0 — Digital Data Output, Bit 0 (LSB) |
| Chân 16 | DOUT1 — Digital Data Output, Bit 1 |
| Chân 17 | DOUT2 — Digital Data Output, Bit 2 |
| Chân 18 | DOUT3 — Digital Data Output, Bit 3 |
| Chân 19 | DOUT4 — Digital Data Output, Bit 4 |
| Chân 20 | DOUT5 — Digital Data Output, Bit 5 |
| Chân 21 | DOUT6 — Digital Data Output, Bit 6 |
| Chân 22 | DOUT7 — Digital Data Output, Bit 7 (MSB) |
| Chân 23 | CS/RD — Chip Select / Read strobe (active low) |
| Chân 24 | DVDD — Digital Supply, +2.7V to +5.5V |
Ứng dụng tiêu biểu
MAX1092BEEG phù hợp cho 6 Áp dụngs: Industrial Process Control & PLC Analog Input Modules, Multichannel Data-Acquisition (DAQ) Front Ends, Medical Instrumentation Front End, Battery-Powered Portable Measurement Devices, Pen-Digitizer and Tablet Digitizing Systems, HVAC and Building Automation Sensor Interfaces.
Industrial Process Control & PLC Analog Input Modules
The MAX1092BEEG's 4-channel pseudo-differential input configuration is well matched to industrial PLC analog input modules that read thermocouples, 4-20 mA current loops (via shunt), and strain-gauge bridges. The -40°C to +85°C industrial temperature rating and ±0.5 LSB INL accuracy deliver reliable 10-bit precision in factory environments. The on-chip +2.5V reference (4 ppm/°C drift) eliminates external reference components, reducing BOM cost per channel. Source: Maxim MAX1090/MAX1092 datasheet.
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Multichannel Data-Acquisition (DAQ) Front Ends
The MAX1092BEEG's 400 ksps sample rate and parallel byte-wide interface make it well suited for 4-8 channel data-acquisition cards that stream digitized samples to a microcontroller or FPGA in real time. The byte-wide parallel interface simplifies data timing and avoids SPI/I²C bottleneck overhead at high sample rates. Auto power-down reduces average current when sampling is intermittent. Source: Maxim MAX1090/MAX1092 datasheet, section on digital interface.
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Medical Instrumentation Front End
The MAX1092BEEG is appropriate for medical instrumentation front ends (patient monitoring, blood-pressure modules, infusion-pump sensors) where 10-bit precision, low average power, and a small 24-pin QSOP package are valued. Auto power-down with 2 µs wake-up supports battery-powered designs that sample periodically to extend operating life. The internal +2.5V reference avoids external precision references, which simplifies medical device BOMs. Per Maxim datasheet, ±0.5 LSB INL is sufficient for 10-bit vital-sign monitoring.
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Battery-Powered Portable Measurement Devices
The MAX1092BEEG's automatic power-down between conversions and 2 µs wake-up time make it a strong choice for battery-powered portable measurement devices such as digital multimeters, handheld data loggers, and field test equipment. Average supply current drops to the microamp range between conversions, extending battery life significantly. The +5V analog supply / +2.7-5.5V digital supply combination accepts USB-derived power rails. Source: Maxim MAX1090/MAX1092 datasheet power-down section.
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Pen-Digitizer and Tablet Digitizing Systems
The MAX1092BEEG's 400 ksps sample rate and multi-channel input capability fit pen-digitizer and tablet digitizing systems that read multiple sensor axes at high update rates. The parallel byte-wide interface minimizes latency between sample acquisition and host processor reading, critical for smooth pen tracking. The internal +2.5V reference provides stable ADC calibration across temperature. Reference: Maxim application note for digitizer systems.
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HVAC and Building Automation Sensor Interfaces
The MAX1092BEEG fits HVAC and building-automation sensor interfaces that read temperature, humidity, pressure, and air-quality sensors. Its 4 pseudo-differential channels can each handle a Wheatstone-bridge sensor, and the industrial temperature range supports outdoor-mounted control cabinets. The internal +2.5V reference and parallel interface minimize component count and firmware overhead. Source: Maxim MAX1090/MAX1092 datasheet.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MAX1092BEEG — 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 | MAX1092BEEG+ | MAX1092BCEG | MAX1068AEEG+ |
|---|---|---|---|---|
| Package | 24-QSOP | 24-QSOP | 24-QSOP | 24-QSOP |
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Resolution | 10 bit | 10 bit | 10 bit | 14 bit |
| Sample Rate | 400 ksps | 400 ksps | 400 ksps | 200 ksps |
| Number of Channels | 4 / 8 (diff / SE) | 4 / 8 | 4 / 8 | 4 / 8 |
| Supply Voltage | +5V (AVDD), +2.7-5.5V (DVDD) | Same | Same | Same |
| Internal Reference | +2.5V | +2.5V | +2.5V | +2.5V |
| Operating Temperature | -40°C to +85°C (industrial) | -40°C to +85°C | -40°C to +85°C (extended) | -40°C to +85°C |
| RoHS Compliance | Non-RoHS (with '+' suffix = RoHS) | RoHS-compliant | Non-RoHS (C variant) | RoHS-compliant |
Bảo phân biệt quan trọng
- Higher 400 ksps sample rate vs. the MAX1068AEEG+ (vsMAX1068AEEG+)
- Lower power consumption than MAX1068AEEG+ at full speed (vsMAX1068AEEG+)
- Drop-in RoHS replacement available as MAX1092BEEG+ (vsMAX1092BEEG)
- Extended temperature grade option as MAX1092BCEG (vsMAX1092BCEG)
Ghi chú thiết kế
Place 0.1 µF ceramic + 10 µF tantalum decoupling capacitors as close as possible to the AVDD (pin 5) and DVDD (pin 24) pins. Connect all analog and digital grounds to a single low-impedance ground plane and join AGND/DGND at one point directly under the IC's exposed pad or near the AGND pin (pin 8/13). Place analog input traces away from digital output traces (DOUT0-DOUT7) to minimize digital crosstalk into the analog front end.
Do not load the +2.5V REF pin with high-current external loads - it is intended only for ADC internal use. If an external reference is preferred, leave REFADJ floating or drive it externally with a low-impedance buffer. Also, ensure CS/RD timing follows the datasheet's minimum pulse-width specification; violating timing produces incorrect DOUT reads rather than an error flag. Source: Maxim MAX1090/MAX1092 datasheet timing diagrams.
Take advantage of the automatic power-down mode by issuing conversion bursts only when needed. Each conversion consumes approximately 27 mW at 400 ksps, but power-down quiescent current drops below 10 µA, allowing duty-cycled sampling to dramatically extend battery life. Allow at least 2 µs wake-up time before initiating a conversion after exiting power-down. Source: Maxim MAX1090/MAX1092 datasheet power management section.
For pseudo-differential measurements, route the positive and negative input traces as a tightly coupled pair with matched lengths to preserve common-mode rejection above 1 kHz. Add RC anti-aliasing filters at each AIN input (typically 100 Ω + 1 nF for 400 ksps) to prevent out-of-band noise from folding into the conversion bandwidth. Source: Maxim MAX1090/MAX1092 datasheet analog input section.
Thông tin tuân thủ
The MAX1092BEEG is the standard (non-RoHS) variant. The MAX1092BEEG+ is the RoHS-compliant / lead-free variant. Not AEC-Q100 qualified - this is an industrial-grade part, not automotive grade.
