MAX1110CAP - 8-Bit 8-Ch SAR ADC, 2.7-5.5V | Maxim Integrated
部品番号: MAX1110CAP ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $7.42 | $7.42 |
| 10 | $6.68 | $66.80 |
| 100 | $5.95 | $595.00 |
| 500 | $5.21 | $2,605.00 |
| 1,000 | $4.62 | $4,620.00 |
MAX1110CAP 概要
An SAR ADC is a type of analog-to-digital converter that uses a binary search through an internal capacitive DAC to determine the input voltage, producing a clean, low-latency digital word per conversion start. As a member of the successive-approximation family, the MAX1110 sits hierarchically between flash and sigma-delta converters: it offers far better channel count and power efficiency than flash, while delivering much faster conversions than sigma-delta. It is part of the broader data-converter IC category within analog signal-chain components, alongside DACs, analog front ends, and precision op-amps.
Key features include 8 single-ended or 4 differential analog input channels (software-configurable), an internal 2.5V reference (also usable externally), an unipolar input range of 0V to VREF or 0V to VDD, hardware- and software-controlled shutdown, and a 4-wire serial interface. The internal reference and clock eliminate external components, simplifying PCB layout and BOM cost for multichannel data-acquisition designs.
The MAX1110 uses a charge-redistribution SAR core with an internal sample-and-hold, which holds the analog input stable during the 18-clock conversion cycle. The wide supply range (2.7V-5.5V) allows direct connection to both 3.3V microcontrollers and legacy 5V logic, while the low 85 uA operating current makes it suitable for battery-powered instrumentation. The 8-channel input multiplexer supports either 8 single-ended or 4 differential measurements, doubling channel count for differential sensors such as thermocouples or bridge sensors.
Typical applications include portable data loggers, multi-channel sensor monitoring, pen-tablet digitizers, handheld instrumentation, and battery-powered monitoring systems. The combination of 8 channels and a 20-pin SSOP footprint suits compact designs where board area is at a premium.
When designing with this part, place a 0.1 uF decoupling capacitor close to the VDD pin and add a 10 uF bulk capacitor if the analog supply is shared with switching circuitry. The MAX1110CAP is the commercial-grade version; for extended-temperature use, consider the MAX1110CAP+ or similar screened variants.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single source for qualification, sourcing, and PCB drop-in decisions.
ドロップイン代替品: MAX1110CAP — 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。
クイック比較ツール — 並列比較する代替部品を選択:
MAX1110CAP+
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MAX1110CAP+T
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MAX1111CAP+
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MAX1110CAP
✅ ドロップイン✓ 在庫あり
$4.62 / 個
データシートを見る →MAX1062
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MAX1110CAP 最大定格＆電気的特性
| 分解能 | 8 bit |
| Number of Input Channels | 8 single-ended / 4 differential (MAX1110); 4 single-ended / 2 differential (MAX1111) |
| サンプリングレート | 50 kSPS |
| ADC Architecture | Successive Approximation (SAR) with internal track/hold |
| Supply Voltage (Analog) | 2.7 V to 5.5 V |
| Supply Voltage (Digital) | 2.7 V to 5.5 V |
| Supply Current (Active) | 85 uA (sampling at 50 kSPS) |
| Supply Current (Power-Down) | < 10 uA (per datasheet) |
| Input Type | Single-Ended or Pseudo-Differential |
| 基準電圧 | Internal 2.5 V (external also supported) |
| インターフェース | SPI / QSPI / MICROWIRE-compatible serial |
| 動作温度 | 0C to +70C (commercial grade) |
| パッケージ | 20-SSOP |
| 実装タイプ | Surface Mount |
| RoHS ステータス | Compliant |
| Channel Configuration | 8 single-ended or 4 differential inputs, software-selectable |
MAX1110CAP ピン構成
| ピン 1 | AIN0 — Analog input channel 0 |
| ピン 2 | AIN1 — Analog input channel 1 |
| ピン 3 | AIN2 — Analog input channel 2 |
| ピン 4 | AIN3 — Analog input channel 3 |
| ピン 5 | AIN4 — Analog input channel 4 |
| ピン 6 | AIN5 — Analog input channel 5 |
| ピン 7 | AIN6 — Analog input channel 6 |
| ピン 8 | AIN7 — Analog input channel 7 |
| ピン 9 | AGND — Analog ground |
| ピン 10 | DGND — Digital ground |
| ピン 11 | VDD — Analog supply voltage (+2.7V to +5.5V) |
| ピン 12 | REF — Reference voltage input/output (internal 2.5V) |
| ピン 13 | SCLK — Serial clock input |
| ピン 14 | DOUT — Serial data output |
| ピン 15 | DIN — Serial data input |
| ピン 16 | CS — Chip select (active low) |
| ピン 17 | SHDN — Hardware shutdown (active low) |
| ピン 18 | NC — Not connected (per datasheet) |
| ピン 19 | NC — Not connected (per datasheet) |
| ピン 20 | NC — Not connected (per datasheet) |
主な用途
MAX1110CAP の用途: 6 件s: Portable Data Loggers, Multi-Channel Sensor Monitoring, Pen-Tablet and Touch Digitizers, Handheld Test Instruments, Battery-Powered Monitoring Systems, Industrial Control Panels.
Portable Data Loggers
The MAX1110CAP fits portable data loggers because of its 8 single-ended (or 4 differential) input channels and its very low 85 uA active / under-10 uA power-down supply current. Each conversion draws minimal energy, and the integrated 2.5V reference removes the need for an external reference IC. The 2.7V to 5.5V supply accepts a single lithium coin cell or two alkaline cells directly. Compared with parallel-interface ADCs, the MAX1110CAP's SPI-compatible serial port saves GPIO pins on the host microcontroller, freeing them for sensors or memory. Engineers typically pair it with a low-power ARM Cortex-M0 or MSP430 MCU, sampling at 1-10 kSPS per channel with auto power-down between samples for multi-day battery life in field-deployable loggers.
おすすめ
Multi-Channel Sensor Monitoring
With 8 single-ended or 4 differential input channels, the MAX1110CAP is a natural choice for multi-channel sensor monitoring in industrial and consumer equipment. Each channel can read a thermocouple, thermistor, strain gauge, or 4-20 mA current loop with the right signal conditioning. The 8-bit resolution provides about 0.4% full-scale accuracy, sufficient for HVAC temperature monitoring, battery cell voltage tracking, and general analog telemetry. The internal track/hold ensures stable readings even when channels are multiplexed at 50 kSPS aggregate. Compared to higher-resolution 12/16-bit ADCs, the MAX1110CAP keeps BOM cost low while delivering enough precision for status-monitoring (rather than precision-measurement) applications.
おすすめ
Pen-Tablet and Touch Digitizers
The MAX1110CAP's 50 kSPS sample rate and 8-channel input multiplexer match the bandwidth requirements of pen-tablet and resistive-touch digitizer applications. Each digitizer line can be connected to one of the 8 analog inputs, with the SAR ADC capturing stylus or finger position. The 2.7V to 5.5V supply is compatible with both 3.3V and 5V digital controllers typically used in digitizer hardware. The internal track/hold and reference minimize external components, enabling slim mechanical designs. Compared to dedicated touch controllers, the MAX1110CAP offers a flexible general-purpose ADC that engineers can reuse across multiple digitizer SKUs while maintaining a single, well-characterized BOM.
おすすめ
Handheld Test Instruments
Handheld multimeters, scope meters, and field testers benefit from the MAX1110CAP's combination of 8 input channels, low power, and small 20-SSOP package. Multiple voltage, current, and temperature measurements can be routed through one ADC, reducing board space and component count. The 8-bit resolution suits bar-graph-style displays and basic numerical readouts where higher precision is unnecessary. The wide 2.7V-5.5V supply allows direct operation from a USB rail or 4xAA battery pack. According to the Maxim datasheet, the internal power-down feature lets handheld designers implement duty-cycled sampling for longer battery life between recharges, while the SPI interface keeps microcontroller pin count low.
おすすめ
Battery-Powered Monitoring Systems
Battery-powered environmental monitors, asset trackers, and wireless sensor nodes benefit from the MAX1110CAP's low 85 uA active current and under-10 uA power-down current. The 2.7V minimum supply voltage allows operation from a single lithium coin cell down to near end-of-life. The 8 single-ended channels can simultaneously monitor battery voltage, charging current, temperature, humidity, light, and other sensors, while the integrated reference and serial interface minimize additional power draw. Compared with sigma-delta ADCs that draw hundreds of microamps continuously, the MAX1110CAP's SAR architecture with auto power-down extends battery life by an order of magnitude in low-duty-cycle monitoring applications.
おすすめ
Industrial Control Panels
Industrial control panels and HMI (human-machine interface) systems use the MAX1110CAP to digitize potentiometers, rotary encoders (via analog taps), thermistors, and 0-10V analog process signals. The 8-channel multiplexer handles multiple analog inputs from a single MCU-friendly serial interface. The 2.7V to 5.5V supply works with 24V industrial rails stepped down to 5V or 3.3V, and the 20-SSOP package is robust for industrial temperature ranges when paired with the commercial-grade screening. The SAR ADC's deterministic latency per conversion is advantageous for closed-loop control, where predictable sampling is required for stable PID loops.
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: MAX1110CAP — 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 | MAX1110CAP+ | MAX1110CAP+T | MAX1111CAP+ | MAX1110CAP | MAX1062 |
|---|---|---|---|---|---|---|
| Brand | Maxim Integrated (Analog Devices) | Maxim Integrated (Analog Devices) | Maxim Integrated (Analog Devices) | Maxim Integrated (Analog Devices) | Maxim Integrated (Analog Devices) | Maxim Integrated (Analog Devices) |
| Package | 20-SSOP | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same |
| Resolution | 8 bit | 8 bit | 8 bit | 8 bit | 8 bit | 14 bit |
| Sampling Rate | 50 kSPS | 50 kSPS | 50 kSPS | 50 kSPS | 50 kSPS | 200 kSPS |
| Number of Channels | 8 SE / 4 DIFF | 8 SE / 4 DIFF | 8 SE / 4 DIFF | 4 SE / 2 DIFF | 8 SE / 4 DIFF | 1 SE / 1 DIFF (single channel) |
| Supply Voltage | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 4.75V to 5.25V (5V only) |
| Interface | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE |
主な差別化要因
- Higher channel count than MAX1111 in same package （vs MAX1111CAP+)
- Higher sampling rate than typical 8-bit ADCs （vs MAX1062)
- Integrated reference and clock minimize BOM （vs MAX1110CAP (legacy non-RoHS))
設計ノート
Place a 0.1 uF ceramic decoupling capacitor as close as possible to the VDD pin (pin 11), and add a 10 uF bulk tantalum or ceramic capacitor on the analog supply rail. According to the Maxim datasheet, the analog and digital grounds should be tied at a single point (star ground) near the IC to avoid digital switching noise coupling into the ADC reference. The internal 2.5V reference also benefits from a 0.1 uF bypass capacitor on the REF pin (pin 12) for low-noise operation.
Do not leave unused analog inputs floating - tie them to AGND or a known voltage. Floating inputs can cause crosstalk and inaccurate readings on adjacent channels. According to the Maxim datasheet, unused digital pins (NC pins 18-20) should remain unconnected. Avoid routing high-frequency digital signals (SCLK, DOUT) near the analog input traces; keep analog traces short and guarded with ground pours to minimize digital switching noise injection into the sample-and-hold.
Route the 8 analog input traces in parallel with matched lengths to preserve channel-to-channel phase relationships. Use a ground plane beneath the analog traces to provide shielding and a low-impedance return path. Place the MAX1110CAP away from switching regulators, high-current traces, and noisy digital signals. Estimated: with a 4-layer PCB (signal-ground-power-signal), the analog input traces should be length-matched within 5 mm for 8-channel simultaneous sampling applications.
The MAX1110CAP's SAR architecture samples the analog input during the track/hold phase, then performs the conversion on the held value. This means the analog input must settle to within 1 LSB (about 10 mV at 2.5V reference) before the conversion starts. Add a 100 ns settling delay between channel switching and conversion start for high-impedance sources (>10 kohm). The internal 2.5V reference has limited drive capability - if multiple channels require high bias currents, use an external reference buffer.
コンプライアンス情報
MAX1110CAP (without + suffix) is the legacy non-RoHS variant. Choose MAX1110CAP+ for RoHS-compliant designs. Reach compliance and conflict-minerals compliance per Maxim/Analog Devices standard declarations. Not AEC-Q100 qualified (consumer/commercial grade).
