Overview
The ADM3311EARU-REEL7 is a serial port transceiver produced by Analog Devices Inc. This device is part of the ADM3311E series, which is designed to provide reliable RS-232 communication in a variety of applications. It features a compact 28-lead TSSOP package and operates within a voltage range of 2.7V to 3.6V, making it suitable for battery-powered and low-power systems.
The transceiver includes an on-board charge pump dc-to-dc converter, eliminating the need for dual power supplies. This design ensures efficient power management and reduces the overall system complexity.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Operating Voltage Range | 2.7 | 3.6 | V | ||
| Maximum Data Rate | 250 | 460 | 920 | kbps | RL = 3 kΩ to 7 kΩ, CL = 50 pF to 1000 pF, VCC = 3.0 V |
| Receiver Propagation Delay (TPHL, TPLH) | 0.17 | 1 | μs | CL = 150 pF | |
| Receiver Output Enable Time (tER) | 100 | ns | |||
| Receiver Output Disable Time (tDR) | 300 | ns | |||
| Transmitter Propagation Delay (TPHL, TPLH) | 500 | ns | RL = 3 kΩ, CL = 1000 pF | ||
| Transition Region Slew Rate | 3 | 18 | V/μs | ||
| ESD Protection | ±15 kV | IEC 1000-4-2 on RS-232 I/Os and CMOS I/Os |
Key Features
- RS-232 Compliance: The ADM3311EARU-REEL7 is fully compliant with RS-232 standards, supporting data rates up to 460 kbps.
- Low Power Consumption: The device features a shutdown mode that reduces power consumption to 66 nW, with one receiver remaining active to monitor peripheral devices.
- ESD Protection: It offers high-level ESD protection up to ±15 kV on RS-232 and CMOS I/O lines, meeting IEC 1000-4-2 requirements.
- On-Board Charge Pump: The integrated charge pump dc-to-dc converter eliminates the need for external power supplies, simplifying system design.
- Green Idle: The device includes the Green Idle feature, which helps in reducing power consumption during idle states).
Applications
- Mobile Phone Handsets and Data Cables: Suitable for use in mobile devices due to its low power consumption and compact size).
- Laptop and Notebook Computers: Ideal for integrating into portable computers for reliable serial communication).
- Printers and Peripherals: Used in various peripheral devices that require RS-232 communication).
- Modems and PDAs/Hand-Held Devices: Applicable in modems and handheld devices where low power and robust communication are essential).
- Automotive Applications: Qualified for use in automotive environments due to its robust ESD protection and ability to operate in harsh conditions).
Q & A
- What is the operating voltage range of the ADM3311EARU-REEL7?
The operating voltage range is 2.7V to 3.6V).
- What is the maximum data rate supported by the ADM3311EARU-REEL7?
The maximum data rate is up to 460 kbps, and can reach up to 920 kbps under specific conditions).
- Does the ADM3311EARU-REEL7 have ESD protection?
Yes, it has ESD protection up to ±15 kV on RS-232 and CMOS I/O lines, complying with IEC 1000-4-2 requirements).
- What is the power consumption in shutdown mode?
The power consumption in shutdown mode is reduced to 66 nW, with one receiver remaining active).
- What is the purpose of the on-board charge pump dc-to-dc converter?
The on-board charge pump dc-to-dc converter eliminates the need for dual power supplies, simplifying system design).
- What is the Green Idle feature?
The Green Idle feature helps in reducing power consumption during idle states, contributing to energy efficiency).
- In what types of applications is the ADM3311EARU-REEL7 commonly used?
It is commonly used in mobile phone handsets, laptop and notebook computers, printers, modems, and automotive applications).
- What is the package type of the ADM3311EARU-REEL7?
The device is packaged in a 28-lead TSSOP (Thin Shrink Small Outline Package)).
- Is the ADM3311EARU-REEL7 RoHS compliant?
Some versions of the ADM3311EARU are RoHS compliant, but it is important to check the specific part number for compliance).
- What is the typical receiver propagation delay?
The typical receiver propagation delay is 0.17 μs to 1 μs, depending on the load capacitance).
