Overview
The ADM3202ARWZ-REEL7 is a high-speed, 2-channel RS-232/V.28 interface transceiver produced by Analog Devices Inc. This component operates from a single 3.3 V power supply, making it suitable for low-power and battery-powered applications. It is designed to meet EIA-232E specifications and is an upgrade for MAX3222/MAX3232 and LTC1385 devices. The ADM3202 features low power consumption, high baud rates, and robust ESD protection, making it ideal for various electronic systems requiring reliable serial communication.
Key Specifications
| Parameter | Value |
|---|---|
| Power Supply | 3.3 V |
| Number of Channels | 2 |
| Maximum Data Rate | 460 kbps |
| Transmitter Output Voltage | ±6 V (typical) |
| Receiver Input Voltage Range | ±30 V (protected) |
| ESD Protection | ±8 kV (contact discharge), ±15 kV (air gap discharge) on RS-232 pins |
| Package Type | 16-SOIC (0.295", 7.50mm Width) |
| Charge Pump Capacitors | Four external 0.1 μF capacitors (up to 47 μF can be used) |
| Transmitter Propagation Delay | 0.3 μs to 1.2 μs |
| Receiver Propagation Delay | 0.4 μs to 1 μs |
Key Features
- High-speed data transmission up to 460 kbps, exceeding EIA/RS-232E specifications.
- Low power consumption and shutdown facility (in ADM3222 and ADM1385 models) for battery-powered applications.
- ESD protection to IEC 1000-4-2 (801.2) on RS-232 pins.
- Internal 5 kΩ pull-down resistors on each RS-232 input and Schmitt-trigger inputs with 0.4 V hysteresis for error-free reception.
- CMOS technology to minimize power dissipation.
- Step-up voltage converters and level-shifting transmitters and receivers to generate RS-232 levels from a single 3.3 V supply.
Applications
- General-purpose RS-232 data links.
- Portable instruments.
- Printers.
- Palmtop computers and PDAs.
- ISDN modem standards requiring high-speed data rates.
Q & A
- What is the power supply voltage for the ADM3202?
The ADM3202 operates from a single 3.3 V power supply.
- What is the maximum data rate supported by the ADM3202?
The ADM3202 supports data rates up to 460 kbps.
- What type of ESD protection does the ADM3202 offer?
The ADM3202 offers ESD protection to IEC 1000-4-2 (801.2) on RS-232 pins, with ±8 kV contact discharge and ±15 kV air gap discharge.
- What is the typical output voltage of the transmitter?
The typical output voltage of the transmitter is ±6 V.
- What is the package type of the ADM3202ARWZ-REEL7?
The package type is 16-SOIC (0.295", 7.50mm Width).
- How many charge pump capacitors are required for the ADM3202?
Four external 0.1 μF capacitors are required, but larger capacitors up to 47 μF can be used.
- What is the propagation delay for the transmitter and receiver?
The transmitter propagation delay is 0.3 μs to 1.2 μs, and the receiver propagation delay is 0.4 μs to 1 μs.
- Are the receivers protected against overvoltages?
- Do the receivers have internal pull-down resistors?
- What is the purpose of the Schmitt-trigger inputs in the receivers?
The Schmitt-trigger inputs ensure error-free reception for both noisy inputs and inputs with slow transition times, with a hysteresis level of 0.4 V.
