MAX110BCWE+TG002 - 14-Bit Sigma-Delta Serial ADC | Maxim
部品番号: MAX110BCWE+TG002 ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $14.5 | $14.50 |
| 10 | $13.1 | $131.00 |
| 100 | $11.4 | $1,140.00 |
| 500 | $9.85 | $4,925.00 |
| 1,000 | $8.6 | $8,600.00 |
MAX110BCWE+TG002 概要
A sigma-delta ADC is a type of oversampling converter that trades raw conversion speed for very high resolution and excellent noise rejection by pushing quantization noise out of band. In the system hierarchy, the MAX110 sits between general-purpose successive-approximation ADCs (SAR) and dedicated high-precision 24-bit converters - well suited to industrial weighing, panel meters, and portable instrumentation where 50 SPS and 14-bit accuracy are sufficient but true differential input is required.
Key features include ±14-bit resolution with no missing codes, internal digital filtering, an on-chip 4.096 V reference (or optional external reference input), ±5 V analog supply operation, and a low 4 mW typical power dissipation. The serial interface reduces board-routing complexity versus a parallel ADC and enables direct connection to opto-isolated digital isolators in industrial systems.
The device uses a 2nd-order sigma-delta modulator followed by an internal SINC4 digital filter, delivering 50 SPS at the default clock. Compared with a SAR ADC of similar cost, the MAX110 is significantly slower but offers true differential input, integrated clock, and superior 50 Hz / 60 Hz mains noise rejection - a useful property for transducer-front-end designs in electrically noisy factory environments.
Typical applications include industrial weighing scales and load-cell signal chains, portable data loggers and field instruments, temperature-pressure bridge transducers with excitation, panel meters, and battery-powered sensor monitoring. The ±5 V supply also makes it attractive for legacy process-control designs originally built around ±5 V only signal paths.
When designing with this device, pay attention to the input-common-mode voltage window and add an input anti-alias RC network ahead of the analog inputs. The TG002 suffix on this variant is a packaging/reel code (tape-and-reel, 2 kpc reel orientation) and the die is identical to the MAX110BCWE+; drop-in PCB layout is preserved across MAX110ACWE+, MAX110BCWE+, and the MAX110BEWE+ grade siblings.
This page synthesizes distributor pricing, exact drop-in alternatives, and practical design notes for engineers replacing or sourcing the MAX110BCWE+TG002 reel code.
ドロップイン代替品: MAX110BCWE+TG002 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: MAX110BCWE+TG002 （同一形状・フットプリント） — 相違点: ADC Architecture, Number of Channels, Operating Temperature, Package, Resolution.
クイック比較ツール — 並列比較する代替部品を選択:
MAX110BCWE+
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MAX110ACWE+
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MAX110BEWE+
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MAX110BCWE+T
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
MAX110AEWE
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
MAX110BCWE+TG002 最大定格＆電気的特性
| 分解能 | 14-bit (plus overrange) |
| Number of Channels | 2 (differential input) |
| ADC Architecture | Sigma-Delta |
| 入力電圧範囲 | ±3 V differential |
| Common-Mode Input Range | 0 V to ±5 V |
| 電源電圧 | ±5 V (analog and digital) |
| Sample Rate | 50 SPS (typical, internal clock) |
| インターフェース | Serial, SPI/QSPI/MICROWIRE-compatible |
| 基準電圧 | 4.096 V internal (external optional) |
| Power Dissipation | 4 mW typical |
| Calibration | On-chip auto-calibration |
| 動作温度 | 0 C to +70 C (commercial, C grade) |
| パッケージ | 16-pin WSOIC (Wide SOIC, W-SOIC) |
| 実装タイプ | Surface Mount |
| Packaging Variant | TG002 (tape and reel, 2 kpc reel) |
| No Missing Codes | 14-bit guaranteed |
MAX110BCWE+TG002 ピン構成
| ピン 1 | AIN1+ — Positive differential analog input, channel 1 |
| ピン 2 | AIN1- — Negative differential analog input, channel 1 |
| ピン 3 | AIN2+ — Positive differential analog input, channel 2 |
| ピン 4 | AIN2- — Negative differential analog input, channel 2 |
| ピン 5 | REFIN — External reference input (4.096 V internal default) |
| ピン 6 | AGND — Analog ground |
| ピン 7 | AVDD — +5 V analog supply |
| ピン 8 | DGND — Digital ground |
| ピン 9 | SCLK — Serial clock input |
| ピン 10 | CS — Chip select, active low |
| ピン 11 | DIN — Serial data input (calibration register write) |
| ピン 12 | DOUT — Serial data output (conversion result) |
| ピン 13 | DRDY — Data ready output |
| ピン 14 | DVDD — +5 V digital supply |
| ピン 15 | XIN — External crystal input (otherwise tied to DVDD) |
| ピン 16 | XOUT — External crystal output (or no-connect if internal clock) |
主な用途
MAX110BCWE+TG002 の用途: 6 件s: Industrial Weighing Scales & Load Cells, Portable Data Loggers & Field Instrumentation, Panel Meters & Process Indicators, Temperature & Pressure Bridge Transducers, Medical Patient Monitoring Sensor Front-Ends, Battery-Powered Remote Sensor Hubs.
Industrial Weighing Scales & Load Cells
The MAX110BCWE+TG002's true ±14-bit resolution, differential ±3 V input, and 50 Hz / 60 Hz integrated mains-noise rejection make it well matched to the front-end of a load-cell bridge scale. A 1 mV/V full-scale cell excited from the integrated 4.096 V reference chain produces a differential signal that the converter's sigma-delta modulator digitizes with auto-calibrated 14-bit accuracy. Unlike a SAR ADC, the SINC4 digital filter chains materially improve immunity to the electrical noise typical of factory floors, and the 4 mW dissipation keeps the junction temperature rise acceptable in sealed NEMA-4 enclosures.
おすすめ
Portable Data Loggers & Field Instrumentation
For battery-powered field instruments logging slow-moving analog signals, the MAX110BCWE+TG002 delivers 14-bit accurate conversions at 50 SPS while drawing only 4 mW from ±5 V. Its serial interface connects directly to microcontroller UART/SPI blocks, and the on-chip 4.096 V reference eliminates a second component. The wide common-mode input range (0 V to ±5 V) accommodates thermocouple and bridge-sensor outputs without external instrumentation amplifiers, while the auto-calibration routine at power-up maintains accuracy over the operating-temperature range.
おすすめ
Panel Meters & Process Indicators
Panel-meter designs prioritize accuracy, stability, and 50/60 Hz rejection over speed, which is exactly the trade-off profile of the MAX110BCWE+TG002. With its on-chip auto-calibration and bipolar ±3 V differential input, the converter digitizes 4-20 mA current-loop signals (via a 250 ohm sense resistor) to ±14-bit resolution and produces a stable BCD display via the host microcontroller. Compared with a SAR ADC and external op-amp front-end, the integrated approach trims PCB area and BOM cost while still meeting industrial-indicator accuracy requirements.
おすすめ
Temperature & Pressure Bridge Transducers
Bridge-type pressure and temperature sensors produce millivolt-level differential outputs on a high common-mode voltage, which the MAX110BCWE+TG002's 0 V to ±5 V common-mode window accepts directly without an external instrumentation amplifier. The 14-bit resolution maps a 0-30 mV bridge output to a usable 0-1000 code range, and the SINC4 filter's automatic 50/60 Hz notch removes mains pickup on long sensor cables. The 4.096 V internal reference can optionally drive the bridge excitation, simplifying the analog front-end to a handful of precision resistors.
おすすめ
Medical Patient Monitoring Sensor Front-Ends
Low-bandwidth, high-resolution sensor front-ends for medical monitoring benefit from the MAX110BCWE+TG002's true ±14-bit accuracy and integrated auto-calibration. ECG, SpO2, and respiration-rate signal chains running at sub-100 SPS sample rates match the converter's 50 SPS native output, while the on-chip digital filter provides the rejection of mains-frequency interference required for IEC-60601-compliant designs. The device's small 16-WSOIC footprint and low 4 mW dissipation keep battery-powered ambulatory monitor designs compact.
おすすめ
Battery-Powered Remote Sensor Hubs
Remote sensor hubs reporting bridge, thermocouple, or 4-20 mA process variables via low-power radio benefit from the MAX110BCWE+TG002's 4 mW typical dissipation and shutdown modes when used in conjunction with a charge-pump ±5 V supply. The serial MICROWIRE interface lets a low-pin-count microcontroller sleep between conversions, while the integrated 4.096 V reference permits ratiometric bridge excitation. Compared with successive-approximation ADCs of similar cost, the MAX110's sigma-delta topology reduces external component count at the modest expense of throughput.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: MAX110BCWE+TG002 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | MAX110BCWE+ | MAX110ACWE+ | MAX110BEWE+ | MAX110BCWE+T | MAX110AEWE |
|---|---|---|---|---|---|---|
| Brand | Maxim Integrated (ADI) | Maxim Integrated (ADI) | Maxim Integrated (ADI) | Maxim Integrated (ADI) | Maxim Integrated (ADI) | Maxim Integrated (ADI) |
| Package | 16-pin WSOIC (W-SOIC) | 16-pin WSOIC - same | 16-pin WSOIC - same | 16-pin WSOIC - same | 16-pin WSOIC - same | 16-pin WSOIC - same |
| Resolution | 14-bit (+overrange) | 14-bit (+overrange) | 14-bit (+overrange) | 14-bit (+overrange) | 14-bit (+overrange) | 14-bit (+overrange) |
| Sample Rate | 50 SPS | 50 SPS | 50 SPS | 50 SPS | 50 SPS | 50 SPS |
| Temperature Grade | Commercial (0 C to +70 C) | Commercial | Commercial | Extended (-40 C to +85 C) | Commercial | Extended (-40 C to +85 C) |
| Packaging | TG002 (T&R, 2kpc) | Tube/tray | Tube/tray | Tube/tray | Tape & Reel | Tube (no +) |
| Architecture | Sigma-Delta | Sigma-Delta | Sigma-Delta | Sigma-Delta | Sigma-Delta | Sigma-Delta |
| Input Channels | 2 differential | 2 differential | 2 differential | 2 differential | 2 differential | 2 differential |
| Supply Voltage | ±5 V | ±5 V | ±5 V | ±5 V | ±5 V | ±5 V |
主な差別化要因
- True differential ±3 V inputs with on-chip 4.096 V reference （vs MAX110AEWE)
- Tape-and-reel oriented delivery for SMT lines （vs MAX110BCWE+ (tray))
- On-chip auto-calibration eliminates external trim （vs MAX1300 series)
設計ノート
The MAX110BCWE+TG002 requires a clean ±5 V analog and digital supply; per Maxim's datasheet, AVDD and DVDD must be decoupled with 10 uF tantalum and 0.1 uF ceramic capacitors placed within 5 mm of the supply pins. Splitting the analog and digital grounds and tying them together at a single point under the ADC prevents digital return currents from corrupting the analog input. Estimated: with a 5 mA typical AVDD + 1 mA DVDD load, the supply rejection must be at least 60 dB to keep noise below the 14-bit LSB at 3 V full scale.
Route the differential analog input traces as a tightly-coupled pair on the top layer over a continuous ground plane; this Maxim-recommended layout minimizes common-mode pickup and loop inductance. Keep digital lines (SCLK, DOUT, DRDY, CS) physically separated from the analog traces and avoid running them parallel for more than a few millimeters. The exposed die-attach pad is not present on the W-SOIC package, so a single ground pour under the part carries away the thermal dissipation of roughly 50 mW at full conversion rate.
Do not exceed the ±3 V differential input range or the 0 V to ±5 V common-mode window; saturating the input latches the modulator and produces a stuck-overrange code. The XIN pin must be tied to DVDD when using the internal 4.096 MHz oscillator; floating it on the bench causes conversion errors. If the on-chip reference is bypassed externally, REFADJ must still be driven, or the internal reference is disabled and the device will not convert correctly. Finally, the TG002 tape-and-reel suffix is a packaging code only - the silicon is identical to the MAX110BCWE+ tray variant.
Add a simple RC anti-alias filter (typically 1 kohm and 10 nF) at each differential analog input, placed within 10 mm of the AIN+/AIN- pins; this combination preserves 14-bit accuracy while attenuating out-of-band noise that the sigma-delta modulator would otherwise alias back into the conversion. For thermocouple and small-thermistor measurements, place the filtering capacitors on the source side of the series resistor to damp thermocouple-loop resonances. Estimated: the -3 dB corner at 16 kHz is well above the modulator oversampling frequency, ensuring negligible attenuation in the signal band.
コンプライアンス情報
RoHS and REACH compliance is published on the Maxim/Analog Devices MAX110 product page. AEC-Q100 grade is not qualified; for automotive applications use the MAX11xx AEC-Q100-qualified sister parts from Maxim/ADI rather than the MAX110 commercial-grade family.
