AD5700-1BCPZ-RL7 - Low Power HART Modem | Analog Devices
料号： AD5700-1BCPZ-RL7 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 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 概述
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.
直接替换替代料： AD5700-1BCPZ-RL7 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： AD5700-1BCPZ-RL7 （相同外形与封装尺寸） ——差异在于 Package, RoHS Status, Integrated Oscillator, Modulation Type, Supply Voltage Range.
快速对比工具——选择替代料号进行并排对比：
AD5700-1BCPZ-R5
✅ 直接替换✓ 有现货
$5.06 / 个
查看数据手册 →AD5700-1ACPZ-RL7
✅ 直接替换📋 参考替代料（不在目录中）
AD5700BCPZ-R5
✅ 直接替换📋 参考替代料（不在目录中）
AD5700-1ACPZ
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$4.45 / 个
查看数据手册 →DS8500-JND+T&R
✅ 直接替换📋 参考替代料（不在目录中）
HT5700
✅ 直接替换📋 参考替代料（不在目录中）
AD5700-1BCPZ-RL7 规格参数
| 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) |
| 封装 | 24-LFCSP-WQ (4x4) |
| 安装类型 | Surface Mount |
| RoHS 状态 | RoHS3 Compliant |
| REACH Status | Unaffected |
| MSL 等级 | 3 (168 hours) |
| Family Name | AD5700-1 |
| 分类 | Integrated Circuits |
| 生命周期状态 | Active |
AD5700-1BCPZ-RL7 引脚配置
| 引脚 1 | VDD — Power supply input |
| 引脚 2 | GND — Ground |
| 引脚 3 | TXD — Transmit data input |
| 引脚 4 | RXD — Receive data output |
| 引脚 5 | CLK — Clock output (internal oscillator) |
| 引脚 6 | MOD_OUT — Modulator output |
| 引脚 7 | DEMOD_IN — Demodulator input |
| 引脚 8 | TEST — Test pin (connect to GND) |
| 引脚 9 | NC — No connect |
| 引脚 10 | NC — No connect |
| 引脚 11 | NC — No connect |
| 引脚 12 | NC — No connect |
| 引脚 13 | NC — No connect |
| 引脚 14 | NC — No connect |
| 引脚 15 | NC — No connect |
| 引脚 16 | NC — No connect |
| 引脚 17 | NC — No connect |
| 引脚 18 | NC — No connect |
| 引脚 19 | NC — No connect |
| 引脚 20 | NC — No connect |
| 引脚 21 | NC — No connect |
| 引脚 22 | NC — No connect |
| 引脚 23 | NC — No connect |
| 引脚 24 | EP — Exposed pad (connect to GND) |
典型应用
AD5700-1BCPZ-RL7 适用于 6 应用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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： AD5700-1BCPZ-RL7 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
关键差异点
- Integrated precision oscillator （对比 AD5700BCPZ-R5)
- Low power consumption （对比 DS8500-JND+T&R)
- Wide supply voltage range （对比 AD5700-1ACPZ-RL7)
设计说明
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.
合规信息
RoHS3 compliant and REACH unaffected per PartGenie. MSL 3 (168 hours). Not AEC-Q100 qualified.
