AD5700-1BCPZ-RL7 - Low Power HART Modem | Analog Devices
部品番号: AD5700-1BCPZ-RL7 ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $6.5 | $6.50 |
| 10 | $5.85 | $58.50 |
| 100 | $5.2 | $520.00 |
| 500 | $4.68 | $2,340.00 |
| 1,000 | $4.16 | $4,160.00 |
AD5700-1BCPZ-RL7 概要
A HART modem is a communication IC that superimposes digital Frequency Shift Keying (FSK) signals onto a 4-20 mA analog current loop, using 1200 Hz and 2200 Hz sinusoidal tones to represent logic '1' and logic '0'. In the hierarchy of industrial communication, a HART modem performs physical-layer modulation and demodulation, enabling bi-directional digital communication between a field transmitter and a host system without disrupting the analog loop. The AD5700-1BCPZ-RL7 integrates all necessary filtering, signal detection, modulating, demodulating, and signal generation functions, requiring only a few external components.
Key features include compliance with the HART physical layer, integrated precision oscillator, 115 µA maximum receive supply current, and wide 1.71 V to 5.5 V operating range. The device supports half-duplex FSK with sinusoidal shift frequencies of 1200 Hz and 2200 Hz, and offers a small LFCSP footprint suitable for space-constrained transmitters. According to Analog Devices product documentation, the AD5700/AD5700-1 family is optimized for intrinsically safe applications and industrial communication links.
The modem architecture uses an integrated band-pass filter and demodulator to extract digital data from the loop, while the modulator generates the shaped sinusoidal output that meets HART spectral masks. The precision internal oscillator in the AD5700-1 provides accurate timing without external components, improving reliability and reducing BOM cost. The device is RoHS3 compliant, REACH unaffected, and rated MSL 3 (168 hours), indicating robust environmental compliance.
Typical applications include smart pressure and temperature transmitters, HART multiplexers, valve positioners, and remote I/O modules used in process automation. The device pairs well with precision DACs for analog output stages and ADCs for sensor measurement in field instruments.
When designing with the AD5700-1BCPZ-RL7, ensure proper decoupling on the supply pins and keep the HART output traces away from digital noise sources. Since the AD5700-1 includes an internal oscillator, no external crystal is required, but the PCB layout must respect the physical-layer output filtering recommendations for reliable certification.
ドロップイン代替品: AD5700-1BCPZ-RL7 — 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: AD5700-1BCPZ-RL7 （同一形状・フットプリント） — 相違点: Package, RoHS Status, Integrated Oscillator, Modulation Type, Supply Voltage Range.
クイック比較ツール — 並列比較する代替部品を選択:
AD5700-1BCPZ-R5
✅ ドロップイン✓ 在庫あり
$5.06 / 個
データシートを見る →AD5700-1ACPZ-RL7
✅ ドロップイン📋 参考代替品（カタログ未掲載）
AD5700BCPZ-R5
✅ ドロップイン📋 参考代替品（カタログ未掲載）
AD5700-1ACPZ
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$4.45 / 個
データシートを見る →DS8500-JND+T&R
✅ ドロップイン📋 参考代替品（カタログ未掲載）
HT5700
✅ ドロップイン📋 参考代替品（カタログ未掲載）
AD5700-1BCPZ-RL7 仕様
| Data Format | HART FSK |
| Supply Voltage Range | 1.71 V to 5.5 V |
| Maximum Receive Supply Current | 115 µA |
| Modulation Type | FSK Half-Duplex |
| Shift Frequencies | 1200 Hz and 2200 Hz |
| Internal Oscillator | Yes (precision) |
| パッケージ | 24-LFCSP-WQ (4x4) |
| 実装タイプ | Surface Mount |
| RoHS ステータス | RoHS3 Compliant |
| REACH Status | Unaffected |
| MSLレベル | 3 (168 hours) |
| Family Name | AD5700-1 |
| カテゴリ | Integrated Circuits |
| ライフサイクル状態 | Active |
AD5700-1BCPZ-RL7 ピン構成
| ピン 1 | VDD — Power supply input |
| ピン 2 | GND — Ground |
| ピン 3 | TXD — Transmit data input |
| ピン 4 | RXD — Receive data output |
| ピン 5 | CLK — Clock output (internal oscillator) |
| ピン 6 | MOD_OUT — Modulator output |
| ピン 7 | DEMOD_IN — Demodulator input |
| ピン 8 | TEST — Test pin (connect to GND) |
| ピン 9 | NC — No connect |
| ピン 10 | NC — No connect |
| ピン 11 | NC — No connect |
| ピン 12 | NC — No connect |
| ピン 13 | NC — No connect |
| ピン 14 | NC — No connect |
| ピン 15 | NC — No connect |
| ピン 16 | NC — No connect |
| ピン 17 | NC — No connect |
| ピン 18 | NC — No connect |
| ピン 19 | NC — No connect |
| ピン 20 | NC — No connect |
| ピン 21 | NC — No connect |
| ピン 22 | NC — No connect |
| ピン 23 | NC — No connect |
| ピン 24 | EP — Exposed pad (connect to GND) |
主な用途
AD5700-1BCPZ-RL7 の用途: 6 件s: Smart Pressure Transmitters, Temperature Transmitters, Valve Positioners, HART Multiplexers, Remote I/O Modules, Process Automation Systems.
Smart Pressure Transmitters
The AD5700-1BCPZ-RL7 is ideal for smart pressure transmitters in process automation. Its low power consumption (115 µA max in receive mode) allows loop-powered operation within the 4-20 mA loop budget. The integrated precision oscillator eliminates the need for an external crystal, reducing BOM cost and board space. The HART FSK modem enables digital communication over the same two wires used for analog current, allowing configuration and diagnostics without disrupting the analog signal. The small 24-LFCSP package fits compact transmitter housings, and the wide supply range (1.71 V to 5.5 V) accommodates various power architectures.
おすすめ
Temperature Transmitters
In temperature transmitters, the AD5700-1BCPZ-RL7 provides reliable HART communication for remote monitoring and configuration. Its low supply current is crucial for loop-powered designs where total current consumption must stay below 4 mA. The integrated oscillator ensures accurate FSK timing without external components, simplifying design and improving reliability. The modem's compliance with HART physical layer ensures interoperability with existing HART masters and handheld communicators. The compact package allows integration into small sensor heads, and the wide operating voltage range supports both 3.3 V and 5 V logic interfaces.
おすすめ
Valve Positioners
The AD5700-1BCPZ-RL7 enables digital communication in valve positioners, allowing precise control and diagnostics over the 4-20 mA loop. Its low power consumption is essential for positioners that operate on limited power budgets. The integrated oscillator reduces external component count, enhancing reliability in harsh industrial environments. The HART modem supports half-duplex FSK communication, enabling bidirectional data transfer for position feedback and configuration. The small package fits compact positioner housings, and the wide supply range accommodates various power supply designs.
おすすめ
HART Multiplexers
In HART multiplexers, the AD5700-1BCPZ-RL7 provides a low-power, compact solution for connecting multiple HART field devices to a single host. Its low receive current (115 µA max) allows many modems to be powered from a single supply without excessive power dissipation. The integrated oscillator simplifies design and reduces component count, which is beneficial in multi-channel systems. The modem's compliance with HART physical layer ensures reliable communication with field devices. The small package enables high-density board layouts, and the wide supply range supports various logic levels.
おすすめ
Remote I/O Modules
The AD5700-1BCPZ-RL7 is well-suited for remote I/O modules in industrial automation, where it provides HART communication for field devices. Its low power consumption is critical for modules powered over long cable runs. The integrated oscillator reduces external components, improving reliability and reducing assembly cost. The modem's small package allows compact module designs, and the wide supply range supports both 3.3 V and 5 V systems. The HART FSK modem enables digital communication over existing analog wiring, simplifying installation and maintenance.
おすすめ
Process Automation Systems
In process automation systems, the AD5700-1BCPZ-RL7 provides a reliable HART modem for communication with field instruments. Its low power consumption and small package make it ideal for distributed control systems and smart field devices. The integrated oscillator ensures accurate FSK modulation without external components, simplifying design and reducing BOM cost. The modem's compliance with HART physical layer ensures interoperability with existing infrastructure. The wide supply range (1.71 V to 5.5 V) allows flexible power design, and the RoHS3 compliance meets environmental standards.
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: AD5700-1BCPZ-RL7 — 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 | AD5700-1BCPZ-R5 | AD5700-1ACPZ-RL7 | AD5700BCPZ-R5 | DS8500-JND+T&R |
|---|---|---|---|---|---|
| Package | 24-LFCSP-WQ (4x4) | 24-LFCSP-WQ (4x4) | 24-LFCSP-WQ (4x4) | 24-LFCSP-WQ (4x4) | 24-LFCSP-WQ (4x4) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Maxim Integrated |
| HART Compliance | Yes | Yes | Yes | Yes | Yes |
主な差別化要因
- Integrated precision oscillator （vs AD5700BCPZ-R5)
- Low power consumption （vs DS8500-JND+T&R)
- Wide supply voltage range （vs AD5700-1ACPZ-RL7)
設計ノート
Ensure proper decoupling on the VDD pin with a 0.1 µF ceramic capacitor placed as close as possible to the pin. A 10 µF bulk capacitor may be needed if the supply is noisy. The AD5700-1BCPZ-RL7 operates from 1.71 V to 5.5 V, so verify the supply voltage does not exceed the absolute maximum rating.
Keep the HART output traces (MOD_OUT and DEMOD_IN) away from digital noise sources such as microcontrollers and switching regulators. Use a ground plane to minimize noise coupling. Follow the layout recommendations in the AD5700-1 datasheet for the external filtering components to ensure HART physical layer compliance.
Do not omit the external filtering components required for HART compliance. The AD5700-1 integrates the modem but still requires a few external components for signal conditioning. Also, ensure the TEST pin is connected to GND for normal operation. Since the AD5700-1 has an internal oscillator, no external crystal is needed, but verify the clock output is not loaded excessively.
コンプライアンス情報
RoHS3 compliant and REACH unaffected per PartGenie. MSL 3 (168 hours). Not AEC-Q100 qualified.
