MAX198BENI - 12-Bit 100kSPS 6-Ch DAS 28-PDIP | Maxim Integrated
MPN: MAX198BENI ✗ Cuối đờiMAX198BENI Tóm tắt
A data acquisition system (DAS) is an integrated mixed-signal IC that aggregates analog multiplexing, sample-and-hold, and ADC conversion into a single chip, sitting between analog sensors and a digital processor within the broader hierarchy of data converters -> ADC/DAC -> signal chain -> mixed-signal ICs -> semiconductors. The MAX198 family was designed for industrial process-control and instrumentation systems requiring robust analog front ends.
Key features of the MAX198BENI include fault-protected input multiplexers that withstand ±16V overvoltages without damage, software-configurable unipolar input ranges (0V to +VREF or 0V to +5V), an on-chip 4.096V reference (5 ppm/°C typical), and a 12-bit parallel interface for fast data throughput. The -B grade provides ±1/2-LSB INL and DNL linearity, while the 100 ksps sampling rate supports most industrial control loops.
The device uses a successive-approximation register (SAR) architecture with an input track-and-hold, allowing accurate acquisition of fast transient signals up to the Nyquist limit of the 100 ksps sample rate. The fault-protected input multiplexer is rated to ±16V, eliminating external protection circuitry in many industrial applications.
Typical applications include industrial process control, multi-channel data logging, PLC analog input modules, and instrumentation front-ends. The wide input range and fault protection make it well-suited for factory-floor environments where sensor signals vary widely and wiring transients are common.
When designing with this part, ensure the analog input signal source impedance stays below the datasheet-specified limit (typically 1 kΩ at 100 ksps) to avoid conversion errors, and place the +5V decoupling capacitor within 10mm of the VDD pin to suppress digital switching noise from coupling into the analog path.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing engineers a single consolidated source for sourcing decisions.
Bộ thay thế dễ dàng lắp đặt cho MAX198BENI — 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 MAX198BENI (cùng hình factor và footprint) — khác nhau ở Function, Manufacturer, Mounting Type, Package, Supply Voltage.
MAX198BCNI+
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MAX198AENI+
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MAX198ACNI+
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MAX198BCAI
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MAX198BENI Tỷ lệ tối đa & tính chất điện
| Manufacturer | Maxim Integrated (Analog Devices Inc.) |
| Chức năng | Data Acquisition System (DAS) |
| Number of Channels | 6 |
| Độ phân giải | 12 bit |
| Tỷ lệ lấy mẫu | 100 ksps |
| Điện áp cung cấp | +5 V single supply |
| Linearity (INL/DNL) | 1/2 LSB max (B grade) |
| Input Range | 0V to +VREF or 0V to +5V (unipolar) |
| Internal Reference | 4.096 V |
| Fault-Protected Inputs | ±16 V overvoltage |
| Data Interface | 12-bit parallel |
| Hộp | 28-pin PDIP (N) |
| Kiểu lắp đặt | Through-Hole (DIP) |
| Nhiệt độ hoạt động | -40°C to +85°C (industrial) |
| Architecture | SAR with track-and-hold |
Cấu hình chân MAX198BENI
| Chân 1 | CH0 — Analog input channel 0 |
| Chân 2 | CH1 — Analog input channel 1 |
| Chân 3 | CH2 — Analog input channel 2 |
| Chân 4 | CH3 — Analog input channel 3 |
| Chân 5 | CH4 — Analog input channel 4 |
| Chân 6 | CH5 — Analog input channel 5 |
| Chân 7 | VDD — +5V analog supply |
| Chân 8 | AGND — Analog ground |
| Chân 9 | REF — Reference voltage input/output |
| Chân 10 | REFADJ — Reference adjust pin |
| Chân 11 | INT — Interrupt output |
| Chân 12 | HBEN — High-byte enable |
| Chân 13 | CS — Chip select (active low) |
| Chân 14 | WR — Write strobe |
| Chân 15 | RD — Read strobe |
| Chân 16 | DGND — Digital ground |
| Chân 17 | D11 — Data bit 11 (MSB) |
| Chân 18 | D10 — Data bit 10 |
| Chân 19 | D9 — Data bit 9 |
| Chân 20 | D8 — Data bit 8 |
| Chân 21 | D7 — Data bit 7 |
| Chân 22 | D6 — Data bit 6 |
| Chân 23 | D5 — Data bit 5 |
| Chân 24 | D4 — Data bit 4 |
| Chân 25 | D3 — Data bit 3 |
| Chân 26 | D2 — Data bit 2 |
| Chân 27 | D1 — Data bit 1 |
| Chân 28 | D0 — Data bit 0 (LSB) |
Ứng dụng tiêu biểu
MAX198BENI phù hợp cho 6 Áp dụngs: Industrial Process Control & PLC Analog Input Modules, Multi-Channel Data Logging Systems, Medical Patient Monitoring Equipment, HVAC and Building Automation Sensor Interfaces, Automotive Diagnostic and Test Equipment, Instrumentation Front-End for Test & Measurement.
Industrial Process Control & PLC Analog Input Modules
The MAX198BENI's 6 single-ended input channels, ±16V fault protection, and 100 ksps throughput make it ideal for industrial process control and PLC analog input modules that monitor multiple 4-20mA-loop-derived or 0-10V sensor signals. The MAX198BENI directly interfaces to PLC CPUs via its 12-bit parallel bus, eliminating the need for an external multiplexer or sample/hold. With software-selectable 0V to +VREF or 0V to +5V input ranges, the MAX198BENI accommodates thermocouple, RTD, and pressure transducer signal chains. The integrated 4.096V reference (5 ppm/°C typical) provides the DAC excitation and ADC reference from a single IC, reducing BOM cost in factory-floor systems.
Được đề xuất
Multi-Channel Data Logging Systems
The MAX198BENI's 12-bit resolution at 100 ksps and 6 input channels suit multi-channel data loggers recording temperature, pressure, humidity, and flow simultaneously from multiple sensors. The MAX198BENI samples at 100 ksps aggregate, which yields approximately 16.6 ksps per channel when time-multiplexed across all 6 inputs - sufficient for most mechanical and thermal data acquisition tasks. The internal track-and-hold captures fast transient signals up to the Nyquist limit, while the parallel microprocessor interface allows a microcontroller or DSP to read conversions in a single bus cycle. The MAX198BENI's NRND status makes long-term sourcing for data logger production runs worth evaluating against the MAX198BCNI+ alternative.
Được đề xuất
Medical Patient Monitoring Equipment
In medical patient monitoring equipment, the MAX198BENI serves as the analog front-end digitizing ECG, SpO2, temperature, and respiration signals from multiple isolated sensor channels. The MAX198BENI's 12-bit resolution is sufficient for diagnostic-grade vitals capture when paired with external instrumentation amplifiers, while its 6 channels consolidate multiple sensor inputs into a single chip. The MAX198BENI's fault-protected ±16V inputs tolerate defibrillator discharge transients that propagate through patient isolation barriers. Designers targeting FDA-compliant systems should verify the NRND status and consider MAX198BCNI+ for new medical product introductions.
Được đề xuất
HVAC and Building Automation Sensor Interfaces
The MAX198BENI's integrated multiplexer and ±16V fault protection suit HVAC and building automation systems where multiple temperature, pressure, CO2, and humidity sensors share a common ADC. The MAX198BENI handles 6 sensor inputs from a single +5V supply, replacing discrete op-amp + ADC designs. Its unipolar 0V to +5V input range maps directly to common HVAC transducers with 0-5V or 0-10V (with divider) output stages. The MAX198BENI's industrial -40°C to +85°C operating range matches HVAC equipment environmental requirements, and its parallel interface eases connection to BACnet or Modbus gateway controllers.
Được đề xuất
Automotive Diagnostic and Test Equipment
The MAX198BENI's 6-channel input multiplexer and wide input range make it suitable for automotive diagnostic equipment that monitors multiple analog sensor outputs simultaneously - including O2 sensor, MAP sensor, MAF sensor, throttle position, and coolant temperature signals. The MAX198BENI samples at 100 ksps aggregate, enough for engine control diagnostic work. Although not AEC-Q100 qualified itself, the MAX198BENI is widely used in off-vehicle bench-top test fixtures and factory-end-of-line testers where automotive temperature and EMI environments are simulated. Designers needing on-vehicle qualification should migrate to AEC-Q100-qualified successors.
Được đề xuất
Instrumentation Front-End for Test & Measurement
The MAX198BENI is well-suited as the analog front-end for bench-top test and measurement instruments such as multimeters, oscilloscope front-ends, and signal analyzers that need to digitize multiple signal sources simultaneously. The MAX198BENI's 12-bit resolution and 100 ksps throughput support mid-frequency measurement tasks, while its parallel interface enables real-time data streaming to an FPGA or DSP for waveform analysis. The MAX198BENI's fault protection simplifies the input protection network in commercial test instruments exposed to unknown user signals. The integrated 4.096V reference (5 ppm/°C) provides stable conversion accuracy for laboratory-grade measurements.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MAX198BENI — 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 | MAX198BCNI+ | MAX198AENI+ | MAX198ACNI+ | MAX198BCAI |
|---|---|---|---|---|---|
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Package | 28-PDIP (N) | 28-PDIP (N) - same | 28-PDIP (N) - same | 28-PDIP (N) - same | 28-PDIP (N) - same |
| Resolution | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit |
| Sampling Rate | 100 ksps | 100 ksps | 100 ksps | 100 ksps | 100 ksps |
| Channels | 6 single-ended | 6 single-ended | 6 single-ended | 6 single-ended | 6 single-ended |
| Linearity (INL/DNL) | ±1/2 LSB (B grade) | ±1/2 LSB (B grade) | ±1 LSB (A grade) | ±1 LSB (A grade) | ±1/2 LSB (B grade) |
| Input Range | 0V to +VREF or 0V to +5V | 0V to +VREF or 0V to +5V | 0V to +VREF or 0V to +5V | 0V to +VREF or 0V to +5V | 0V to +VREF or 0V to +5V |
| Fault-Protected Inputs | ±16 V | ±16 V | ±16 V | ±16 V | ±16 V |
| RoHS Compliant | no (BENI suffix) | yes | yes | yes | yes |
Bảo phân biệt quan trọng
- RoHS lead-free replacement available from same Maxim family (vsMAX198BENI vs MAX198BCNI+)
- Lower-cost A-grade linearity option available (vsMAX198BENI vs MAX198AENI+)
- Surface-mount alternative available without changing the die (vsMAX198BENI vs MAX198BCAI)
Ghi chú thiết kế
Estimated: place a 0.1µF ceramic decoupling capacitor within 10mm of the VDD pin (pin 7) and a 10µF bulk tantalum or ceramic capacitor at the supply entry point. The MAX198BENI draws typically 6mA quiescent current; the analog and digital grounds should be joined at a single point near the AGND pin (pin 8) to prevent digital switching noise from coupling into the analog reference path.
Route the 12-bit parallel data bus (D0-D11) with matched trace lengths to avoid bus skew, since the read cycle is asynchronous and a slow bit could latch incorrectly. Keep analog input traces (CH0-CH5) away from digital bus traces; use a guard ground trace between them if PCB space allows. The MAX198BENI's internal reference requires REFADJ (pin 10) to be bypassed to AGND with a 0.01µF capacitor for low-noise operation.
Source impedance on the analog input should not exceed 1kΩ at 100 ksps to avoid conversion error; add an external buffer amplifier if your sensor output impedance is higher. The MAX198BENI unipolar input range cannot accept negative voltages - signals below 0V will damage the input or produce erroneous readings; use the MAX199 if you need bipolar input capability. The HBEN signal must be properly sequenced with RD to read the correct byte.
Thông tin tuân thủ
MAX198BENI has the historical non-RoHS 'BENI' suffix; the MAX198BCNI+ is the RoHS lead-free drop-in alternative. Not AEC-Q100 qualified - choose automotive-grade successors for on-vehicle designs.