Overview
The ADM3311EACPZ from Analog Devices Inc. is a highly efficient RS-232 transceiver that integrates three drivers and five receivers. This device is designed to operate within the EIA-232 standard using a single power supply ranging from +2.7V to +3.6V. It is particularly suited for battery-powered portable devices due to its low power consumption and advanced power-saving features. The ADM3311EACPZ includes an on-chip DC-DC converter that generates the necessary ±7.5V from the input power supply, eliminating the need for dual power supplies and ensuring optimal performance.
Key Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Power Supply Voltage | +2.7V to +3.6V | Package Type | 32-Lead LFCSP_WQ |
| Operating Temperature | −40°C to +85°C | Number of Drivers | 3 |
| Number of Receivers | 5 | ESD Protection | ±15 kV on RS-232 lines |
| Shutdown Supply Current | 0.02 µA to 1 µA | Input Pull-Up Current | 10 µA to 25 µA |
| Input Leakage Current (SD, EN) | ±1 µA | EIA-232 Input Voltage Range | −25V to +25V |
| EIA-232 Input Threshold Low | 0.4V to 1.3V | EIA-232 Input Threshold High | 2.0V to 2.4V |
| EIA-232 Input Hysteresis | 0.14V | EIA-232 Input Resistance | 3 kΩ to 7 kΩ |
| Output Voltage Swing | ±5.0V to ±6.4V (loaded with 3 kΩ to ground) | Transmitter Output Resistance | 300 Ω |
| Data Rate | Up to 460 kb/s | Power Consumption (No Load) | 0.45 mA to 4.5 mA (VCC = 2.7V to 3.6V) |
Key Features
- Green Idle Power-Saving Mode: Minimizes power consumption in an unloaded state.
- Single Power Supply: Operates with a single +2.7V to +3.6V power supply.
- On-Chip DC-DC Converter: Generates ±7.5V from the input power supply, eliminating the need for dual power supplies.
- Low EMI: Reduces electromagnetic interference.
- Low Power Shutdown: Reduces power consumption to 20 nA in shutdown mode.
- Full RS-232 Compliance: Meets the EIA-232 standard.
- High Data Rate: Supports data rates up to 460 kb/s.
- ESD Protection: Provides ±15 kV ESD protection on RS-232 lines.
Applications
- Mobile Phone Handsets/Data Cables: Ideal for mobile phone data cables and handsets.
- Laptop and Notebook Computers: Suitable for serial port applications in laptops and notebooks.
- Printers and Peripherals: Used in various peripheral devices such as printers and modems.
- PDAs/Hand-Held Devices/Palmtop Computers: Applicable to personal digital assistants and other hand-held devices.
Q & A
- Q: What is the operating voltage range of the ADM3311EACPZ?
A: The ADM3311EACPZ operates with a single power supply ranging from +2.7V to +3.6V. - Q: How many drivers and receivers does the ADM3311EACPZ have?
A: The ADM3311EACPZ has three drivers and five receivers. - Q: What is the ESD protection level of the ADM3311EACPZ?
A: The ADM3311EACPZ provides ±15 kV ESD protection on its RS-232 lines. - Q: What is the data rate supported by the ADM3311EACPZ?
A: The ADM3311EACPZ supports data rates up to 460 kb/s. - Q: What is the purpose of the Green Idle power-saving mode in the ADM3311EACPZ?
A: The Green Idle power-saving mode minimizes power consumption in an unloaded state, helping to extend battery life in portable devices. - Q: What type of package does the ADM3311EACPZ come in?
A: The ADM3311EACPZ comes in a 32-Lead LFCSP_WQ package. - Q: What is the operating temperature range of the ADM3311EACPZ?
A: The ADM3311EACPZ operates within a temperature range of −40°C to +85°C. - Q: How does the on-chip DC-DC converter in the ADM3311EACPZ work?
A: The on-chip DC-DC converter generates ±7.5V from the input power supply, eliminating the need for dual power supplies. - Q: What are some common applications of the ADM3311EACPZ?
A: Common applications include mobile phone handsets/data cables, laptop and notebook computers, printers, peripherals, and PDAs/hand-held devices. - Q: What is the warranty period for the ADM3311EACPZ?
A: The warranty period can vary depending on the supplier, but typically includes a 1-year warranty covering defects in materials and workmanship under normal use.
