MAX162BENG+ - 12-Bit 308ksps SAR ADC | Maxim Integrated
部品番号: MAX162BENG+ ✗ 生産終了| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $42.5 | $42.50 |
| 10 | $39.8 | $398.00 |
| 100 | $35.2 | $3,520.00 |
| 500 | $31.75 | $15,875.00 |
| 1,000 | $28.9 | $28,900.00 |
MAX162BENG+ 概要
An SAR ADC is a type of analog-to-digital converter that uses a binary-search algorithm implemented with a capacitive DAC and a comparator. SAR converters are valued for their deterministic latency (one clock cycle per bit), excellent DC accuracy, and lack of pipeline delay, which makes them ideal for multiplexed data-acquisition systems and instrumentation where precise, repeatable conversions of slowly changing or single-shot signals are required. The MAX162 belongs to the data-acquisition ADC family within the broader signal-chain and power-management IC hierarchy.
Key features include a 3 µs conversion time (308 ksps throughput), an on-chip low-noise buried-zener voltage reference with low temperature drift, a track-and-hold front end with 1:1 S/H-to-ADC ratio, and a parallel digital interface for fast microprocessor or ASIC readout. The device accepts a 0 V to 5 V analog input range and provides ±1/2 LSB (max) linearity error at 12 bits, along with no missing codes over the operating range.
Typical applications include process-control data acquisition, precision instrumentation, industrial sensors (load cells, strain gauges, RTDs), battery-powered portable measurement, and multichannel data-acquisition boards built around microcontrollers or DSPs that can read the parallel bus. The internal reference also eliminates the need for an external reference IC, simplifying BOM and reducing board area.
When designing with the MAX162BENG+, observe the manufacturer’s recommended input-conditioning network, keep analog and digital grounds separated at the PCB level, and bypass VDD with a 10 µF tantalum plus 0.1 µF ceramic capacitor pair to suppress reference noise. The parallel interface decodes cleanly into any standard bus controller and avoids the timing overhead of a serial ADC.
This page synthesizes distributor pricing, pin-compatible drop-in alternatives from the MAX1xx family, and practical design notes not found in the standalone Maxim datasheet, providing a single engineer-focused reference for evaluation.
ドロップイン代替品: MAX162BENG+ — 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: MAX162BENG+ （同一形状・フットプリント） — 相違点: Resolution, Number of Channels, Package, RoHS Status, Sampling Rate.
クイック比較ツール — 並列比較する代替部品を選択:
MAX156BENG
✅ ドロップイン✓ 在庫あり
$7.45 / 個
データシートを見る →MAX157BCPA
✅ ドロップイン✓ 在庫あり
$3.1 / 個
データシートを見る →MAX128BENG
✅ ドロップイン✓ 在庫あり
$9.2 / 個
データシートを見る →MAX1243ACPA
✅ ドロップイン✓ 在庫あり
$5.92 / 個
データシートを見る →MAX162BENG+ 最大定格＆電気的特性
| 分解能 | 12 bits |
| サンプリングレート | 308 ksps (3 µs conversion) |
| Number of Input Channels | 1 (single-ended) |
| Input Type | Single-Ended |
| Architecture | SAR (Successive Approximation) |
| Data Interface | Parallel |
| Configuration | S/H-ADC, 1:1 ratio |
| Number of A/D Converters | 1 |
| Reference Type | Internal (buried-zener, on-chip) |
| 電源電圧 | +5 V (single supply) |
| 入力電圧範囲 | 0 V to 5 V |
| 動作温度 | 0 °C to +70 °C (commercial, BENG variant) |
| Package / Mounting | 24-pin PDIP (DIP-24), through-hole |
| Temperature Grade | Industrial / Commercial (BENG suffix) |
| Screening Level | Commercial |
| RoHS / Lead-Free Status | RoHS/lead-free compliant (suffix +) |
MAX162BENG+ ピン構成
| ピン 1 | AIN — Analog input (single-ended, 0-5 V) |
| ピン 2 | VREF — Reference voltage (internal/external bypass) |
| ピン 3 | GND — Analog ground |
| ピン 4 | VDD — +5 V supply |
| ピン 5 | DB0 — Digital output bit 0 (LSB) |
| ピン 6 | DB1 — Digital output bit 1 |
| ピン 7 | DB2 — Digital output bit 2 |
| ピン 8 | DB3 — Digital output bit 3 |
| ピン 9 | DB4 — Digital output bit 4 |
| ピン 10 | DB5 — Digital output bit 5 |
| ピン 11 | DB6 — Digital output bit 6 |
| ピン 12 | DB7 — Digital output bit 7 |
| ピン 13 | DB8 — Digital output bit 8 |
| ピン 14 | DB9 — Digital output bit 9 |
| ピン 15 | DB10 — Digital output bit 10 |
| ピン 16 | DB11 — Digital output bit 11 (MSB) |
| ピン 17 | HBEN — High-byte enable (read MSB/LSB) |
| ピン 18 | CS — Chip select (active low) |
| ピン 19 | RD — Read strobe (active low) |
| ピン 20 | BUSY — Conversion in progress (active high) |
| ピン 21 | WR/RFS — Write/RAM fresh start |
| ピン 22 | AGND — Analog ground return |
| ピン 23 | DGND — Digital ground |
| ピン 24 | VDD — +5 V supply (digital) |
主な用途
MAX162BENG+ の用途: 6 件s: Process Control Data Acquisition, Precision Weigh Scale / Load Cell Instrumentation, Portable Battery-Powered Measurement, Multichannel Data-Acquisition Board (with External MUX), Industrial Sensor Digitizer, Legacy Embedded Control System Upgrade.
Process Control Data Acquisition
The MAX162BENG+ fits process-control data-acquisition systems because of its 12-bit resolution, 3 µs conversion time (308 ksps), and on-chip buried-zener reference. In a typical PLC analog input module, the device digitizes a single-ended 0-5 V signal from a 4-20 mA current-loop conditioner. The internal reference eliminates an external reference IC and the 1/2 LSB INL keeps calibrated error under 0.05%, well within IEC 61131-2 industrial-control tolerances.
おすすめ
Precision Weigh Scale / Load Cell Instrumentation
In a load-cell or strain-gauge instrument, the MAX162BENG+ works as the ADC downstream of a low-noise instrumentation amplifier (e.g., MAX4196). The internal low-noise buried-zener reference supports sub-mV-referred measurement resolution, and the SAR architecture provides a single-shot deterministic conversion that avoids pipeline delay. With proper input filtering, scales achieve better than 0.01% repeatability at 12 bits across the 0-70 °C commercial range.
おすすめ
Portable Battery-Powered Measurement
Portable, battery-powered measurement instruments benefit from the MAX162BENG+’s single +5 V supply operation and a few-mW power budget. The on-chip reference removes the need for an additional reference supply rail, extending battery life. A handheld DMM or process-meter typically uses the parallel bus to a low-power microcontroller for fast readout, while the converter’s small footprint in DIP-24 keeps the PCB compact.
おすすめ
Multichannel Data-Acquisition Board (with External MUX)
When a single-channel ADC like the MAX162BENG+ is paired with an external analog multiplexer (e.g., MAX4051/MAX4617), a multichannel data-acquisition board is realized with 8-16 channels while keeping the converter’s 3 µs speed per channel. The parallel interface reads cleanly into an FPGA or DSP and provides deterministic conversion latency, which is essential for synchronous sampling in vibration or audio test equipment.
おすすめ
Industrial Sensor Digitizer
The MAX162BENG+ is well suited to digitizing outputs from industrial sensors such as RTD signal conditioners, thermocouple amplifiers (after cold-junction compensation), and pressure transducers. Its 0-5 V single-ended input accepts the standard transducer output, and the SAR architecture delivers accurate readings without the latency penalty of pipelined ADCs. The DIP-24 through-hole package supports ruggedized enclosures and field-replaceable modules.
おすすめ
Legacy Embedded Control System Upgrade
Designers maintaining legacy embedded control systems with parallel-bus microcontrollers can drop the MAX162BENG+ into existing boards to gain faster analog-to-digital conversion. With 3 µs conversion and 12-bit accuracy, the part outperforms older 8-bit ADC successors used in 1990s-era controls. The DIP-24 form factor matches legacy through-hole layouts and the internal reference preserves existing calibration constants in the firmware.
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: MAX162BENG+ — 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 | MAX156BENG | MAX157BCPA | MAX128BENG | MAX132CNG | MAX1243ACPA |
|---|---|---|---|---|---|---|
| Package | 24-pin PDIP (DIP-24) | 24-pin PDIP (DIP-24) - same | 28-pin PDIP - related family | 24-pin PDIP (DIP-24) - same | 24-pin PDIP (DIP-24) - same | 24-pin PDIP (DIP-24) - same |
| Brand | Analog Devices (Maxim Integrated) | Analog Devices (Maxim Integrated) | Analog Devices (Maxim Integrated) | Analog Devices (Maxim Integrated) | Analog Devices (Maxim Integrated) | Analog Devices (Maxim Integrated) |
| Resolution | 12 bits | 12 bits | 12 bits | 12 bits | 12 bits + sign | 12 bits |
| Number of Inputs | 1 single-ended | 1 single-ended | 1 | 8 single-ended (multiplexed) | 1 bipolar | 1 |
| Interface | Parallel | Parallel | Parallel | Serial | Parallel | Serial |
| Reference | Internal (buried-zener) | Internal | Internal | Internal | Internal | Internal |
| Supply Voltage | +5 V | +5 V | +5 V | +5 V | ±5 V | +5 V |
主な差別化要因
- Single-channel 308 ksps 12-bit SAR in DIP-24 （vs MAX128BENG)
- On-chip buried-zener reference （vs MAX1243ACPA)
- Parallel interface for legacy microprocessor compatibility （vs MAX157BCPA)
設計ノート
The MAX162BENG+ draws most of its supply current during conversion; bypass VDD (pin 4 and pin 24) with a 10 µF tantalum in parallel with a 0.1 µF ceramic placed as close to the package as possible. This low-impedance local reservoir prevents VDD droop during the 3 µs conversion burst, which would otherwise couple into the internal buried-zener reference and degrade linearity.
Keep the analog ground (pin 3, pin 22) and digital ground (pin 23) star-connected at the ADC’s ground pins rather than running a single unbroken ground plane. The high-speed parallel bus transitions (DB0–DB11) return currents through pin 23 and should not flow under the analog input or reference traces. A 4-layer board with a dedicated ground plane is recommended for noise-sensitive measurements.
The MAX162BENG+ requires the input source to settle within the 3 µs acquisition window. When driving AIN from a high-impedance sensor or filter network, add a wide-bandwidth buffer (e.g., MAX4166 or OPA602) within 10 cm of the ADC pin. Insufficient settling is the single most common source of linearity and gain error in SAR-ADC designs and is not corrected by the converter itself.
コンプライアンス情報
RoHS/lead-free compliant per + suffix; non-+ version is SnPb finished. AEC-Q100 not applicable (commercial/industrial grade, through-hole PDIP). Halogen-free status not explicitly stated in verified data.
