Overview
The ADM3202ARU, manufactured by Analog Devices Inc., is a high-speed, 2-channel RS-232/V.28 interface transceiver. This device operates from a single 3.3 V power supply, making it ideal for battery-powered portable instruments due to its low power consumption. The ADM3202ARU conforms to the EIA-232E and CCITT V.28 specifications and supports data rates up to 460 kbps. It features a charge pump voltage converter that generates the necessary ±6.6 V supply from the 3.3 V input, and it includes ESD protection to IEC 1000-4-2 (801.2) on RS-232 pins.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Operating Voltage Range | 3.0 | 3.3 | 5.5 | V | VCC |
| Power Supply Current | 1.3 | 3 | 12 | mA | No load, RL = 3 kΩ to GND |
| Shutdown Supply Current | 0.01 | 0.5 | - | μA | - |
| Logic Input Threshold Low, VINL | 0.8 | - | - | V | TIN |
| Logic Input Threshold High, VINH | 2.0 | - | - | V | TIN |
| CMOS Output Voltage Low, VOL | 0.4 | - | - | V | IOUT = 1.6 mA |
| CMOS Output Voltage High, VOH | - | - | 2.4 | V | IOUT = -1.6 mA |
| Data Rate | - | - | 460 | kbps | - |
| Package Type | - | - | - | 16-TSSOP | - |
| Operating Temperature Range | -40 | - | 85 | °C | - |
Key Features
- Operates from a single 3.3 V power supply, making it suitable for battery-powered devices.
- Conforms to EIA-232E and CCITT V.28 specifications and supports data rates up to 460 kbps.
- Includes a charge pump voltage converter to generate ±6.6 V supply from the 3.3 V input.
- ESD protection to IEC 1000-4-2 (801.2) on RS-232 pins, with ±8 kV contact discharge and ±15 kV air gap discharge.
- Low power consumption with a shutdown facility, reducing quiescent current to less than 0.5 μA.
- Internal 5 kΩ pull-down resistors on each RS-232 input and Schmitt-trigger inputs with a hysteresis level of 0.4 V.
Applications
- General-purpose RS-232 data links.
- Portable instruments.
- Printers.
- Palmtop computers and PDAs.
Q & A
- What is the operating voltage range of the ADM3202ARU?
The operating voltage range is 3.0 V to 5.5 V, with a typical value of 3.3 V.
- What is the maximum data rate supported by the ADM3202ARU?
The ADM3202ARU supports data rates up to 460 kbps.
- What type of package does the ADM3202ARU come in?
The ADM3202ARU comes in a 16-lead Thin Shrink Small Outline Package (TSSOP).
- Does the ADM3202ARU have ESD protection?
Yes, the ADM3202ARU has 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 are the typical applications of the ADM3202ARU?
The typical applications include general-purpose RS-232 data links, portable instruments, printers, palmtop computers, and PDAs.
- How does the charge pump voltage converter work in the ADM3202ARU?
The charge pump voltage converter generates a ±6.6 V supply from the 3.3 V input using external 0.1 μF charge pump capacitors.
- What is the shutdown supply current of the ADM3202ARU?
The shutdown supply current is less than 0.5 μA.
- Does the ADM3202ARU have internal pull-down resistors on the RS-232 inputs?
Yes, the ADM3202ARU has internal 5 kΩ pull-down resistors on each RS-232 input.
- What is the operating temperature range of the ADM3202ARU?
The operating temperature range is -40°C to +85°C.
- Is the ADM3202ARU RoHS compliant?
Yes, the ADM3202ARU is RoHS compliant.
