MAX11162ETB+ - 16-bit 500ksps SAR ADC | Analog Devices
부품 번호: MAX11162ETB+ ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $11.5 | $11.50 |
| 10 | $10.35 | $103.50 |
| 100 | $9.2 | $920.00 |
| 500 | $8.28 | $4,140.00 |
| 1,000 | $7.36 | $7,360.00 |
MAX11162ETB+ 개요
A SAR ADC is a successive-approximation analog-to-digital converter that uses a binary search algorithm and an internal capacitive DAC to convert an analog input into a digital code in N conversion cycles (where N equals the resolution in bits). SAR ADCs sit in the data-converter hierarchy between flash ADCs (faster, lower resolution) and delta-sigma ADCs (higher resolution, lower speed), and are widely used in industrial process control, instrumentation, and motor-drive feedback loops where both resolution and deterministic latency matter. Within that taxonomy, MAX11162ETB+ occupies the mid-speed, mid-resolution tier optimized for multiplexed data-acquisition front ends.
Key specifications include 16-bit resolution (no missing codes), 500 ksps throughput, a single 2.5 V internal reference, and a 3 V to 5 V analog supply range. The device offers an integral nonlinearity (INL) of +/-0.65 LSB (typ), signal-to-noise-plus-distortion ratio (SINAD) of 91 dB, and spurious-free dynamic range (SFDR) of 100 dB at 10 kHz input. A dedicated active-low REF/SHUTDOWN pin allows hardware power-down, and the part operates over the -40 C to +85 C industrial temperature range.
Internally, the MAX11162 uses a charge-redistribution SAR core with auto-calibrated switch capacitors and an on-chip 2.5 V bandgap reference; it supports both internal and external reference modes, an analog input range of 0 V to VREF, and an overvoltage-tolerant input that survives inputs up to 5.5 V even when VDD = 0 V (per Analog Devices datasheet). The architecture provides zero-cycle latency, making it well-suited for multiplexed multi-channel systems driven by an external MUX.
Typical applications include industrial process control and PLC analog input modules, multi-channel data-acquisition systems, weigh scales and load-cell signal conditioning, battery-management monitoring subsystems, medical instrumentation signal chains, and motor-control current/voltage feedback. The 10-TDFN footprint suits compact, dense PCB layouts where board area is at a premium.
When designing with the MAX11162, ensure the analog input band-limiting RC network matches the chosen sampling rate to avoid -3 dB roll-off within the signal band, and decouple AVDD with 10 uF and 0.1 uF ceramic capacitors placed within 5 mm of the supply pin to preserve SINAD performance. The on-chip reference eliminates the need for an external reference IC, simplifying BOM and reducing PCB area.
This page synthesizes distributor pricing, drop-in alternatives from the MAX1116x family and cross-brand web-data candidates, and practical PCB/calibration design notes not consolidated in the manufacturer datasheet.
드롭인 대체품: MAX11162ETB+ — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: MAX11162ETB+ (동일 폼 팩터 및 풋프린트) — 차이점: Architecture, Internal Reference, Number of Channels, Package, Sampling Rate.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
MAX11161ETB+
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MAX11163ETB+
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MAX11160ETB+
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MAX11165ETB+
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MAX11162ETB+ 최대 정격 & 전기적 특성
| 분해능 | 16 bit |
| Architecture | SAR (Successive Approximation Register) |
| Number of Channels | 1 single-ended input |
| 샘플링 속도 | 500 ksps |
| Analog Supply Voltage | 3 V to 5 V (single supply) |
| Digital I/O Supply | 1.8 V to 5 V (VLOGIC, independent of AVDD) |
| Input Type | Single-ended, true-differential input stage |
| Analog Input Range | 0 V to VREF (unipolar) |
| Internal Reference | 2.5 V on-chip bandgap |
| External Reference Support | Yes (REF pin accepts external reference) |
| Data Interface | SPI/QSPI/MICROWIRE-compatible serial |
| 패키지 | 10-pin TDFN (3 mm x 3 mm) EP |
| 동작 온도 | -40 C to +85 C (industrial) |
| 실장 유형 | Surface Mount |
| RoHS 상태 | Compliant |
MAX11162ETB+ 핀 구성
| 핀 1 | GND — Ground reference |
| 핀 2 | AVDD — Analog supply voltage (3 V to 5 V) |
| 핀 3 | REF — Reference input/output / shutdown (internal 2.5 V reference; bypass with 10 uF cap) |
| 핀 4 | AIN+ — Positive analog input (true-differential) |
| 핀 5 | AIN- — Negative analog input (true-differential) |
| 핀 6 | GND — Ground reference (input-stage ground) |
| 핀 7 | VLOGIC — Digital I/O supply (1.8 V to 5 V) |
| 핀 8 | CS — Active-low chip-select input |
| 핀 9 | SCLK — Serial clock input |
| 핀 10 | DOUT — Serial data output |
일반적인 애플리케이션
MAX11162ETB+ 적합 용도: 6 애플리케이션s: Industrial Process Control and PLC Analog Input, Multi-Channel Data Acquisition Systems, Weigh Scales and Load-Cell Signal Conditioning, Battery Management Monitoring Subsystems, Medical Instrumentation Signal Chains, Motor Control Current and Voltage Feedback.
Industrial Process Control and PLC Analog Input
The MAX11162ETB+ fits industrial PLC analog input modules because its 16-bit no-missing-codes resolution and 500 ksps throughput support high-density multi-channel data-acquisition systems with deterministic SAR latency. Its 3-5 V analog supply matches the 24V->5V backplane rails common in industrial controllers. Placed on a per-channel or multiplexed analog front end with a 4-channel MUX upstream, it digitizes 0-10V or 4-20mA sensor signals without external reference IC, reducing BOM by one component and improving long-term stability. The TDFN-10 (3x3) footprint allows compact modules where board area is constrained.
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Multi-Channel Data Acquisition Systems
The MAX11162ETB+ is well-suited to multiplexed data-acquisition systems where an external analog MUX (e.g., DG408) switches among multiple sensor inputs while the ADC handles the digitisation at 500 ksps aggregate. The single-cycle SAR latency of this part avoids the digital-filtering pipeline delay of delta-sigma ADCs, simplifying channel-to-channel synchronization. Its true-differential input stage rejects common-mode noise on long sensor cables typical in factory-floor DAQ. An on-chip 2.5V reference eliminates the need for an external precision reference, shrinking the BOM and PCB footprint for portable or rack-mounted DAQ units.
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Weigh Scales and Load-Cell Signal Conditioning
For weigh scales and load-cell digitisation, the MAX11162ETB+ provides 16-bit no-missing-codes resolution that captures the full dynamic range of strain-gauge bridge outputs typically spanning a few mV/V. Its true-differential input accepts the bridge output directly, eliminating the need for an external instrumentation amplifier in many designs. The integrated 2.5V reference improves measurement stability across temperature compared to external references subject to thermal drift. Operating over -40 C to +85 C, the ADC supports both commercial bench scales and industrial platform scales in factory environments.
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Battery Management Monitoring Subsystems
In battery-management systems for lithium-ion battery stacks, the MAX11162ETB+ digitizes individual cell voltages and pack current with 16-bit resolution at 500 ksps, fast enough to capture transient events during charge/discharge cycles. Its low supply current suits battery-powered designs, and the wide 3-5 V analog supply matches common battery-monitoring rails. The independent VLOGIC pin allows direct interfacing to 1.8 V or 3.3 V MCUs without level shifters, simplifying the BMS board layout. The TDFN-10 (3x3) package supports compact cell-monitoring boards inside the battery pack housing.
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Medical Instrumentation Signal Chains
The MAX11162ETB+ suits portable and bedside medical instrumentation where 16-bit resolution at 500 ksps captures physiological signals such as ECG, SpO2 photodiode currents, and temperature-sensor outputs. The integrated 2.5V reference reduces BOM and PCB area in space-constrained handheld devices. Its low SINAD impact from input-referred noise preserves the diagnostic accuracy required for clinical-grade measurements. The SPI-compatible serial interface simplifies integration with low-power ARM Cortex-M microcontrollers typical in portable medical devices, and the wide -40 C to +85 C range covers consumer and clinical operating environments.
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Motor Control Current and Voltage Feedback
In motor-control servo drives and BLDC controllers, the MAX11162ETB+ digitizes phase-current shunt-amplifier outputs and DC-bus voltage feedback with deterministic SAR latency critical to current-loop control. Its 500 ksps sampling rate provides adequate oversampling for 20 kHz PWM switching frequencies, supporting accurate torque and speed control. The single-cycle conversion eliminates the digital filter delay inherent to delta-sigma ADCs, allowing simpler control-loop tuning. The TDFN-10 (3x3) footprint allows placement close to the shunt resistors, minimizing trace-induced common-mode noise coupling into the input.
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추천 제품 요약
엔지니어링 참조 데이터: MAX11162ETB+ — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | MAX11161ETB+ | MAX11163ETB+ | MAX11160ETB+ | MAX11165ETB+ |
|---|---|---|---|---|---|
| Package | 10-pin TDFN (3x3) | 10-pin TDFN (3x3) - same | 10-pin TDFN (3x3) - same | 10-pin TDFN (3x3) - same | 10-pin TDFN (3x3) - same |
| Brand | Analog Devices (formerly Maxim Integrated) | Analog Devices - same brand | Analog Devices - same brand | Analog Devices - same brand | Analog Devices - same brand |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit |
| Sampling Rate | 500 ksps | 500 ksps | 500 ksps | 250 ksps | 1 Msps |
| Internal Reference | 2.5 V (integrated) | External only | 2.5 V (integrated) | 2.5 V (integrated) | 2.5 V (integrated) |
| Analog Supply | 3 V to 5 V | 3 V to 5 V | 3 V to 5 V | 3 V to 5 V | 3 V to 5 V |
| Digital I/O Supply | 1.8 V to 5 V (VLOGIC) | 1.8 V to 5 V | 1.8 V to 5 V | 1.8 V to 5 V | 1.8 V to 5 V |
| Input Type | Single-ended, true-differential input | True-differential | True-differential | True-differential | True-differential |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
주요 차별점
- Integrated 2.5 V reference reduces BOM count by one IC (vs MAX11161ETB+)
- 500 ksps throughput balances speed and precision for general industrial applications (vs MAX11160ETB+ (250 ksps))
- Lower power and BOM than higher-speed MAX11165ETB+ (vs MAX11165ETB+ (1 Msps))
설계 노트
Place 10 uF and 0.1 uF ceramic decoupling capacitors on AVDD and VLOGIC within 5 mm of the IC pins. Connect the TDFN exposed pad (EP) to a clean analog ground plane using at least four thermal vias to a mid-layer ground pour. Keep digital signals (CS, SCLK, DOUT) routed away from the analog input traces, with a ground trace between them to minimize digital coupling into the analog front end. Estimated: assumes standard 0805 ceramic capacitors and 4-via 0.3 mm thermal via array.
Power the analog section (AVDD) from a low-noise LDO or ferrite-bead-isolated rail, not directly from a switching regulator. Switching noise on AVDD will couple into the reference and degrade SINAD. The REF pin requires a 10 uF external bypass capacitor (tantalum or low-ESR ceramic) to maintain reference stability. Use a separate decoupling network for AVDD and VLOGIC; do not share inductor or ferrite beads between the two supplies.
Estimated: at 500 ksps the input sampling-charge transient requires a driving amplifier with settling time under 600 ns to 16-bit accuracy. Use an input RC anti-aliasing filter with -3 dB cutoff at 1/2 the sampling rate (250 kHz), implemented as a small-R large-C network (e.g., 10 ohm + 1 nF). Keep the input traces length-matched and symmetric for the differential pair (AIN+/AIN-) to maximize common-mode rejection. Place the ADC close to the analog sensor or upstream MUX to minimize trace-induced pickup.
Route SCLK as a clean digital signal with a series-termination resistor (33-47 ohm) near the source to dampen reflections. Maintain the CS low during the entire conversion and read-out cycle to avoid corrupting the conversion result. DOUT transitions can inject noise into the analog section; route DOUT perpendicular to AIN+/AIN- traces if possible, and add a guard ground trace between them. Use 4-layer PCB with dedicated ground plane for best EMI immunity.
Do not exceed the absolute maximum AVDD of 6 V. Ensure the analog input never exceeds AVDD + 0.3 V or goes below GND - 0.3 V, or latch-up may occur. Bypass the REF pin with the recommended 10 uF capacitor; omitting it will cause reference instability and degrade conversion accuracy. Avoid applying CS or SCLK transitions during the conversion phase - hold CS high (or in idle state) until ready to read the result.
규정 준수 정보
RoHS and REACH compliant per Analog Devices (formerly Maxim Integrated) product declaration. Not AEC-Q100 qualified - this part targets industrial/commercial applications. For automotive-qualified pin-compatible alternatives, consult the MAX11162 automotive-grade variants or contact Analog Devices automotive support.
