Overview
The ADM3307EACPZ-REEL is a 5/3 transceiver integrated circuit designed by Analog Devices Inc. to fully comply with the EIA-232 standard. This device operates with a single 2.7 V to 3.6 V power supply and features an on-board charge pump dc-to-dc converter, which eliminates the need for dual power supplies. The converter generates positive and negative supplies internally, making it ideal for battery-powered portable devices. The ADM3307E also includes ESD protection up to ±15 kV on all I/O lines and a shutdown facility that significantly reduces power consumption.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Maximum Data Rate | 250 | 720 | 920 | kbps | RL = 3 kΩ to 7 kΩ, CL = 50 pF to 1000 pF, VCC = 2.7 V to 3.0 V |
| Receiver Propagation Delay (TPHL, TPLH) | 0.3 | 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 | RL = 3 kΩ, CL = 50 pF to 1000 pF | |
| ESD Protection (I/O Pins) | ±15 kV | Human body model, IEC 1000-4-2 air discharge and contact discharge | |||
| VCC | -0.3 V | +4 V | V | ||
| Operating Temperature (TA) | -40°C | +85°C | °C |
Key Features
- Single Power Supply Operation: Operates with a single 2.7 V to 3.6 V power supply.
- On-Board Charge Pump: Includes a dc-to-dc converter that generates positive and negative supplies internally.
- Green Idle Mode: The charge pump oscillator is gated on and off to maintain output voltage, minimizing power consumption.
- ESD Protection: Up to ±15 kV on all I/O lines, including CMOS, RS-232, EN, and SD.
- Shutdown Facility: Reduces power consumption to 66 nW, with one receiver remaining active for monitoring peripheral devices.
- High Data Rate: Supports data rates up to 920 kbps.
- Compact Package: Available in a 32-lead LFCSP_WQ package.
Applications
- Battery-Powered Devices: Ideal for portable devices due to low power consumption and single power supply operation.
- Industrial Automation: Suitable for harsh electrical environments with built-in ESD protection.
- Medical Devices: Can be used in medical equipment requiring reliable and low-power serial communication.
- Consumer Electronics: Applicable in various consumer electronic devices needing RS-232 communication.
Q & A
- What is the operating voltage range of the ADM3307E?
The ADM3307E operates with a single 2.7 V to 3.6 V power supply.
- What is the maximum data rate supported by the ADM3307E?
The maximum data rate supported is up to 920 kbps.
- Does the ADM3307E have ESD protection?
Yes, it has ESD protection up to ±15 kV on all I/O lines.
- What is the Green Idle mode in the ADM3307E?
The Green Idle mode minimizes power consumption by gating the charge pump oscillator on and off to maintain the output voltage.
- Can the ADM3307E be used in harsh electrical environments?
Yes, it is suitable for operation in harsh electrical environments.
- What is the shutdown power consumption of the ADM3307E?
The shutdown power consumption is reduced to 66 nW.
- Does the ADM3307E support RS-232 communication?
Yes, it is designed to fully meet the EIA-232 standard.
- What package types are available for the ADM3307E?
It is available in a 32-lead LFCSP_WQ package.
- Is the ADM3307E suitable for battery-powered devices?
Yes, it is ideal for battery-powered portable devices due to its low power consumption.
- Can the ADM3307E be used in medical devices?
Yes, it can be used in medical equipment requiring reliable and low-power serial communication.
