MAX1230ACEG+ - 12-Bit 300ksps 16-Ch ADC with FIFO | Maxim Integrated
部品番号: MAX1230ACEG+ ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $11.2 | $11.20 |
| 10 | $10.05 | $100.50 |
| 100 | $8.92 | $892.00 |
| 500 | $7.84 | $3,920.00 |
| 1,000 | $6.95 | $6,950.00 |
MAX1230ACEG+ 概要
An ADC is a mixed-signal integrated circuit that converts real-world analog voltages into discrete digital codes. The MAX1230 belongs to the successive-approximation register (SAR) ADC family, which trades raw speed for high accuracy and low power consumption. Within the broader component taxonomy, SAR ADCs sit beneath data converters, which themselves are a subset of mixed-signal ICs and ultimately semiconductor devices used for precision instrumentation and embedded system design.
The MAX1230ACEG+ integrates several blocks normally external to a basic ADC: a true-differential input multiplexer (8 single-ended or 16 differential channels), a low-drift internal reference, a ±1°C internal temperature sensor, a 16-entry First-In/First-Out buffer, configurable scan-mode sequencing, internal averaging, and a power-saving AutoShutdown mode that drops supply current between conversions. The on-chip FIFO lets a host controller sleep while multiple conversions accumulate, easing firmware timing constraints. A 10MHz SPI/QSPI/MICROWIRE-compatible serial interface streams data out without gluing logic to the host bus.
Typical applications span industrial process control loops, multi-channel data-acquisition front-ends, battery-cell monitoring and stack voltage measurement, portable and rack-mounted instrumentation, and embedded sensor hubs that also need on-board temperature compensation. The internal temperature sensor eliminates an external thermistor or remote diode in chassis-monitoring designs. For low-power systems, AutoShutdown and scan-mode combine to let the part sip quiescent current while sweeping many channels.
When designing with this device, budget for an external 0.1µF bypass capacitor close to the supply pin and a 10µF reservoir on the reference pin to preserve linearity at full 300ksps throughput. Choose between single-ended and differential input modes based on the common-mode range of the upstream signal conditioning; the integrated input mux is software-configurable, so no hardware changes are required to switch between 8 SE or 16 DIFF channels.
This page consolidates manufacturer datasheet specifications, current distributor pricing, drop-in same-package alternatives, and practical design notes that go beyond the datasheet to help engineers select and qualify the MAX1230ACEG+ quickly.
ドロップイン代替品: MAX1230ACEG+ — 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: MAX1230ACEG+ （同一形状・フットプリント） — 相違点: Operating Temperature Range, Package, Supply Voltage.
クイック比較ツール — 並列比較する代替部品を選択:
MAX1230BCEG+
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MAX1230ACEG+T
✅ ドロップイン✓ 在庫あり
$8.1 / 個
データシートを見る →MAX1230BCEG+T
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MAX1228BCEG+
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MAX1226BCEG+
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
MAX1230ACEG+ 最大定格＆電気的特性
| 分解能 | 12 bit |
| サンプリングレート | 300 ksps |
| Number of Input Channels | 8 single-ended / 16 differential |
| Converter Architecture | SAR (Successive Approximation) |
| Number of ADCs | 1 |
| Input Type | Single-Ended / Differential |
| 電源電圧 | 5.25 V (max) |
| Internal Reference Voltage | 4.096 V |
| 内部温度センサ | Yes (±1°C accuracy) |
| Internal FIFO | 16 entries |
| Serial Interface | SPI/QSPI/MICROWIRE-compatible, 10 MHz |
| AutoShutdown | Yes |
| Scan Mode / Internal Averaging | Yes |
| 動作温度範囲 | -40°C to +85°C (extended) |
| パッケージ | 24-pin QSOP |
| 実装タイプ | Surface Mount |
| RoHS ステータス | Compliant |
MAX1230ACEG+ 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 | REF — Reference voltage input/output (4.096V internal) |
| ピン 10 | REFCAP — Reference bypass capacitor |
| ピン 11 | AGND — Analog ground |
| ピン 12 | VDD — Analog supply voltage (+5V) |
| ピン 13 | DGND — Digital ground |
| ピン 14 | DVDD — Digital supply voltage |
| ピン 15 | CS — Chip select (serial interface) |
| ピン 16 | SCLK — Serial clock input |
| ピン 17 | DIN — Serial data input |
| ピン 18 | DOUT — Serial data output |
| ピン 19 | SSTRB — Serial-strobe output |
| ピン 20 | AIN15/AIN8- — Analog input (channel 15 or diff pair 8-) |
| ピン 21 | AIN14/AIN8+ — Analog input (channel 14 or diff pair 8+) |
| ピン 22 | AIN13/AIN9- — Analog input (channel 13 or diff pair 9-) |
| ピン 23 | AIN12/AIN9+ — Analog input (channel 12 or diff pair 9+) |
| ピン 24 | AIN11/AIN10+ — Analog input (channel 11 or diff pair 10+) |
主な用途
MAX1230ACEG+ の用途: 6 件s: Multi-Channel Data Acquisition Systems, Industrial Process Control, Battery Cell Monitoring & Management, Portable Instrumentation & Test Equipment, Embedded Sensor Hubs with Temperature Compensation, Rack-Mounted Monitoring Systems.
Multi-Channel Data Acquisition Systems
The MAX1230ACEG+ is designed for multi-channel data-acquisition front-ends where 12-bit resolution and 16 input channels are required. Its 300 ksps sampling rate supports aggregate throughput across the channel mux, while the internal 4.096V reference eliminates the need for an external reference IC. The 16-entry FIFO lets the host controller process conversions in bursts, reducing firmware overhead and enabling simultaneous sampling across multiple sensors in industrial DAQ boards.
おすすめ
Industrial Process Control
The MAX1230ACEG+ suits industrial process-control loops that monitor multiple analog variables such as temperature, pressure, and flow. Its 16-channel differential input multiplexer can connect directly to bridge-type sensors, while the internal ±1°C temperature sensor compensates for thermal drift in the front-end. The extended -40°C to +85°C operating range supports factory-floor deployments, and AutoShutdown reduces quiescent current during idle periods to ease thermal management in sealed enclosures.
おすすめ
Battery Cell Monitoring & Management
The MAX1230ACEG+ excels in battery-cell monitoring applications such as multi-cell lithium-ion stacks, where each cell voltage must be measured individually. Its 12-bit resolution and differential input capability provide accurate cell voltage readings across the stack, while AutoShutdown minimizes quiescent current draw between scans. The internal FIFO can accumulate readings from all cells before waking the host MCU, which is critical for low-power battery-management designs.
おすすめ
Portable Instrumentation & Test Equipment
The MAX1230ACEG+ is well matched to portable and benchtop instrumentation where multi-channel analog inputs and on-board temperature compensation are required. The internal temperature sensor with ±1°C accuracy eliminates the need for an external thermistor, and the small QSOP-24 footprint enables compact handheld designs. AutoShutdown extends battery life in field-instruments, while the 10 MHz SPI/QSPI/MICROWIRE interface connects to most ARM-based MCUs without glue logic.
おすすめ
Embedded Sensor Hubs with Temperature Compensation
The MAX1230ACEG+ supports embedded sensor-hub designs that aggregate multiple analog sensors and require on-board temperature compensation. The integrated temperature sensor readings can be read through the same serial interface, allowing the host to apply temperature compensation to other sensor channels in firmware. The internal FIFO and scan-mode sequencing automate the sampling pattern, letting the host MCU wake only when a batch of readings is ready.
おすすめ
Rack-Mounted Monitoring Systems
The MAX1230ACEG+ fits rack-mounted monitoring systems that supervise multiple analog rails, fans, and thermal zones simultaneously. With 16 differential inputs and a 12-bit ADC core, it can scan supply voltages, current-sense amplifier outputs, and temperature probes in rotation. The 24-pin QSOP package is easy to route on multi-layer backplanes, and the AutoShutdown feature minimizes heat dissipation in dense server-class chassis where many such ADCs operate in parallel.
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: MAX1230ACEG+ — 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 | MAX1230BCEG+ | MAX1230ACEG+T | MAX1230BCEG+T | MAX1228BCEG+ | MAX1226BCEG+ |
|---|---|---|---|---|---|---|
| Package | 24-pin QSOP | 24-pin QSOP - same | 24-pin QSOP - same | 24-pin QSOP - same | 24-pin QSOP - same | 24-pin QSOP - same |
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Resolution | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit |
| Sampling Rate | 300 ksps | 300 ksps | 300 ksps | 300 ksps | 300 ksps | 300 ksps |
| Input Channels | 8 SE / 16 DIFF | 8 SE / 16 DIFF | 8 SE / 16 DIFF | 8 SE / 16 DIFF | 4 SE / 8 DIFF | 4 SE / 8 DIFF |
| Accuracy Grade | A-grade | B-grade (lower accuracy) | A-grade | B-grade | B-grade | B-grade |
| Internal Temperature Sensor | Yes (±1°C) | Yes (±1°C) | Yes (±1°C) | Yes (±1°C) | Yes | Yes |
| Internal Reference | 4.096 V | 4.096 V | 4.096 V | 4.096 V | 4.096 V | 4.096 V |
主な差別化要因
- 16 differential input channels with 16-entry FIFO （vs MAX1228BCEG+)
- Tighter DC accuracy (A-grade) （vs MAX1230BCEG+)
- Integrated ±1°C temperature sensor eliminates external thermistor （vs Discrete ADC + external thermistor designs)
- AutoShutdown + scan mode for ultra-low quiescent current （vs Competitor 12-bit ADCs without AutoShutdown)
設計ノート
Place a 0.1µF ceramic bypass capacitor as close as possible to the VDD (analog supply) pin and a 10µF reservoir capacitor close to the REFCAP pin. This decoupling network stabilizes the internal 4.096V reference during the SAR conversion bursts, which draw transient currents that can otherwise inject noise into the analog input path. Without proper bypassing, INL and DNL performance degrades noticeably at full 300 ksps throughput.
Keep the analog input traces short and routed away from digital lines (CS, SCLK, DIN, DOUT, SSTRB) to minimize coupling noise. Use a star-ground topology that ties AGND and DGND at a single point under or near the IC, and place a ground plane on layer 2 if using a 4-layer PCB. The QSOP-24 lead pitch is 0.025" (0.635 mm), so take care with trace widths and clearances during layout.
Do not exceed the absolute maximum analog input voltage of VDD + 0.3V on any AIN pin, or latch-up may occur. When using differential input mode, ensure the common-mode voltage stays within the specified range — otherwise the multiplexer’s body diode can forward-bias. Also, verify that AutoShutdown is properly sequenced with the serial interface; otherwise the part may enter a low-power state mid-conversion and yield invalid data.
When sampling at the full 300 ksps rate, the source impedance of the driving amplifier matters significantly. The MAX1230ACEG+ has a finite input sampling capacitance (~30 pF typical), and high source impedance causes gain error and reduced linearity. Add an external buffer op-amp with low output impedance if driving the inputs directly from a high-impedance sensor such as a strain-gauge bridge.
コンプライアンス情報
RoHS and REACH compliant per distributor listings. Not AEC-Q100 qualified — not intended for automotive safety-critical applications. Lead-free (Pb-free) finish per Maxim Integrated manufacturing standards.
