AD5700-1 Low Power HART Modem with Precision Internal Oscillator
Field transmitters
HART multiplexers
PLC and DCS analog I/O modules
HART network connectivity
The AD5700-1 is a single-chip solution, designed and specified to operate as a HART® FSK half-duplex modem, complying with the HART physical layer requirements. The AD5700-1 integrates all of the necessary filtering, signal detection, modulating, demodulating and signal generation functions, thus requiring few external components. The 0.5% precision internal oscillator on the AD5700-1 greatly reduces the board space required, making it ideal for line-powered applications in both master and slave configurations. The maximum supply current consumption of the oscillator is 285µA, making the AD5700-1 a low power complete solution ideal for per channel HART I/O implementations. Transmit waveforms are phase continuous 1200 Hz and 2200 Hz sinusoids. The AD5700-1 contains accurate carrier detect circuitry and uses a standard UART interface.
Applications
Features and Benefits- HART-compliant fully integrated FSK modem
- 1200 Hz and 2200 Hz sinusoidal shift frequencies
- 115 µA maximum supply current in receive mode
- Integrated receive band-pass filter
- Minimal external components required
- Clocking optimized for various system configurations
- 0.5% Precision internal oscillator
- Ultralow power crystal oscillator (60 µA maximum)
- External CMOS clock source - Intrinsically safe solution
- Buffered HART output—extra drive capability
- See data sheet for additional features
| IBIS ModelsReference Designs |
Data Sheets
Application Notes
User Guides
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|
| AD5700-1ACPZ-RL7 Production | LFCSP:LEADFRM CHIP SCALE | REEL 1500 | -40 to 125C | 0 | 4.25 | Y |
| AD5700-1BCPZ-R5 Production | LFCSP:LEADFRM CHIP SCALE | OTH 500 | -40 to 125C | 0 | 4.95 | Y |
| AD5700-1BCPZ-RL7 Production | LFCSP:LEADFRM CHIP SCALE | REEL 1500 | -40 to 125C | 0 | 4.95 | Y |
Evaluation Boards
| Part Number | Description | Price | RoHS |
|---|
| EVAL-AD5700-1EBZ | Evaluation Board | 59.99 | Y |
Reference Materials
