AD5700-1BCPZ-RL7 - Low Power HART Modem | Analog Devices
MPN: AD5700-1BCPZ-RL7 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.2 | $112.00 |
| 100 | $9.85 | $985.00 |
| 500 | $8.9 | $4,450.00 |
| 1,000 | $8.25 | $8,250.00 |
Drop-in alternatives for AD5700-1BCPZ-RL7 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
AD5700-1ACPZ-RL7
β Drop-Inπ Reference alternative (not in catalog)
AD5700BCPZ-R5
β Drop-Inπ Reference alternative (not in catalog)
AD5700ACPZ-RL7
β Drop-Inπ Reference alternative (not in catalog)
HT5700
β Drop-Inπ Reference alternative (not in catalog)
HT1200M
β Drop-Inπ Reference alternative (not in catalog)
AD5700-1BCPZ-RL7 Maximum Ratings & Electrical Characteristics
| Function | HART FSK half-duplex modem |
| Protocol Standard | HART physical layer compliant |
| Supply Voltage Range | 1.71 V to 5.5 V |
| Maximum Receive Supply Current | 115 Β΅A |
| Modulation Frequencies | 1200 Hz and 2200 Hz sinusoidal |
| Internal Oscillator | Yes (precision internal oscillator) |
| Package | 24-LFCSP-WQ (4x4) |
| Mounting Type | Surface Mount (SMD) |
| Data Format | HART |
| Family Name | AD5700-1 |
| Lifecycle Status | Active |
| RoHS Compliance | RoHS3 Compliant |
| REACH Status | Unaffected |
| MSL Level | MSL 3 (168 hours) |
| Operating Temperature Range | [DATA_NEEDED: operating temperature range] |
| Transmit Supply Current | [DATA_NEEDED: transmit supply current] |
AD5700-1BCPZ-RL7 24-lfcsp-wq (4x4) Pin Configuration Guide
Complete pinout information for AD5700-1BCPZ-RL7 (24-lfcsp-wq (4x4) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for AD5700-1BCPZ-RL7.
Refer to the datasheet for full pin configuration.
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
AD5700-1BCPZ-RL7 is suitable for 6 applications: Industrial Process Control Transmitter, Smart Valve Positioner, HART Multiplexer and Gateway, Intrinsically Safe Loop-Powered Device, HART-to-UART Protocol Bridge, Retrofit Legacy Sensor with HART Capability.
Industrial Process Control Transmitter
The AD5700-1BCPZ-RL7 is ideal for smart pressure and temperature transmitters that need to communicate over a 4-20 mA loop using HART. Its 115 Β΅A maximum receive current and 1.71 V to 5.5 V supply allow loop-powered operation without exceeding the 3.5 mA digital communication budget. Placed after a sensor ADC such as the AD7793, the modem superimposes FSK tones on the loop, enabling remote configuration and diagnostics. The integrated precision oscillator reduces component count, simplifying the transmitter PCB and improving reliability in high-vibration industrial environments.
Recommended
Smart Valve Positioner
In valve positioners, the AD5700-1BCPZ-RL7 provides the HART physical-layer interface for receiving setpoint commands and transmitting valve position feedback over the same two wires. The modem's low receive current preserves loop power for the actuator and microcontroller, while the 1200/2200 Hz sinusoidal output meets HART spectral requirements for long cable runs. The 24-LFCSP-WQ package fits compact positioner housings, and the internal oscillator removes the need for an external crystal, lowering BOM. This enables faster commissioning and predictive maintenance in process plants.
Recommended
HART Multiplexer and Gateway
The AD5700-1BCPZ-RL7 is suitable for HART multiplexers that aggregate multiple field devices onto a single host connection. Its 1.71 V to 5.5 V supply spans common I/O supply rails, and the half-duplex FSK modem can be paired with an analog switch matrix to sequentially poll up to hundreds of devices. The low 115 Β΅A receive current minimizes loading on the multiplexer bus, allowing many channels to be powered from a modest supply. The precision internal oscillator ensures stable FSK timing across temperature, which is critical in gateway installations with wide ambient swings.
Recommended
Intrinsically Safe Loop-Powered Device
For intrinsically safe field instruments, the AD5700-1BCPZ-RL7's low power consumption is an enabling feature. With a maximum receive supply current of 115 Β΅A, the modem fits within the strict current budgets of 4-20 mA analog loops certified for explosive atmospheres. The wide 1.71 V to 5.5 V input range allows operation from an intrinsically safe power supply and the small 24-LFCSP-WQ package helps minimize the heated volume in flameproof enclosures. Designers can add an isolator like the ADUM1201 to maintain galvanic isolation across the intrinsic safety barrier.
Recommended
HART-to-UART Protocol Bridge
The AD5700-1BCPZ-RL7 can be used as a HART-to-UART bridge in smart sensors and remote I/O modules, converting FSK loop signals into simple UART data for a host MCU. Its single-chip architecture integrates the physical-layer filtering and signal detection, so only a few passives are needed around the device. The internal oscillator simplifies firmware timing because the modem clock is derived on-chip, reducing synchronization complexity. This bridge topology is common in wireless HART adapters and retrofit modules that need to maintain existing analog loops while adding digital diagnostics.
Recommended
Retrofit Legacy Sensor with HART Capability
When upgrading legacy 4-20 mA sensors with HART digital communication, the AD5700-1BCPZ-RL7 provides a compact, low-power modem that can be added to the existing current-loop PCB without changing the analog output path. The 1.71 V to 5.5 V supply can be tapped from the loop regulator, and the modem's modest current draw preserves the loop's analog accuracy. Because the AD5700-1 integrates the precision oscillator, retrofit designs avoid the routing of high-frequency crystal traces, simplifying layout in dense or existing boards. The 24-LFCSP-WQ package fits into most legacy form factors.
Recommended
Recommended Products Summary
Engineering reference data for AD5700-1BCPZ-RL7 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD5700-1ACPZ-RL7 | AD5700BCPZ-R5 | HT5700 |
|---|---|---|---|---|
| Package | 24-LFCSP-WQ (4x4) | 24-LFCSP-WQ (4x4) | 24-LFCSP-WQ (4x4) | 24-LFCSP-WQ (4x4) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Microcyber |
| HART Physical Layer Compliance | Yes | Yes | Yes | Yes (HART certified) |
| Internal Precision Oscillator | Yes | Yes | No | [DATA_NEEDED] |
| Supply Voltage Range | 1.71 V to 5.5 V | 1.71 V to 5.5 V | 1.71 V to 5.5 V | [DATA_NEEDED] |
| Maximum Receive Supply Current | 115 Β΅A | 115 Β΅A | 115 Β΅A | [DATA_NEEDED] |
| Modulation Frequencies | 1200 Hz / 2200 Hz sinusoidal | 1200 Hz / 2200 Hz | 1200 Hz / 2200 Hz | 1200 Hz / 2200 Hz |
| RoHS Compliance | RoHS3 Compliant | RoHS3 Compliant | RoHS3 Compliant | [DATA_NEEDED] |
| Temperature Grade | B-grade | A-grade | B-grade | [DATA_NEEDED] |
Key Differentiators
- Integrated precision internal oscillator eliminates external crystal (vs AD5700BCPZ-R5)
- Wide 1.71 V to 5.5 V supply range with low 115 Β΅A receive current (vs HT1200M)
- HART physical-layer compliant single-chip solution (vs HT5700)
Design Notes
Place the AD5700-1BCPZ-RL7 close to the loop connection point to minimize parasitic capacitance on the MOD_OUT and MOD_IN traces. Use a solid ground plane under the 24-LFCSP-WQ exposed pad and solder the pad to the ground plane for effective thermal and electrical performance. Keep high-speed digital UART lines away from the HART analog front end to avoid crosstalk that could degrade the FSK signal quality.
Do not add an external crystal to the AD5700-1BCPZ-RL7 because the '1' suffix indicates an integrated precision oscillator. The AD5700 (non-1) variants require an external crystal or clock, so confirm the exact MPN before layout. Also ensure the supply is well decoupled with a 0.1 Β΅F ceramic capacitor close to each supply pin; insufficient decoupling can cause HART output frequency drift and certification failures.
Although the modem draws only 115 Β΅A in receive mode, the LFCSP package's exposed pad should still be connected to a suitable ground pour to keep junction temperature low in high-ambient industrial enclosures. The total thermal load of the loop-powered transmitter is dominated by the current loop and other ICs; verify that the combined power dissipation stays within the intrinsic safety current limits and does not cause self-heating above rated temperature.
Compliance Information
RoHS3 compliant and REACH unaffected per PartGenie data. MSL 3 (168 hours). Not AEC-Q100 qualified; intended for industrial instrumentation.
