Overview
The ADM3202ARNZ-REEL7, 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 suitable for low-power applications. It is designed to meet the EIA-232E and CCITT V.28 specifications and supports data rates up to 460 kbps. The transceiver features internal voltage doubler and inverter circuits, which generate the necessary RS-232 voltage levels from the single 3.3 V supply. This component is particularly useful in battery-powered portable instruments due to its low power consumption and shutdown facility (available in some variants like the ADM3222 and ADM1385).
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 | - | mA | No load |
| Power Supply Current | 8 | 12 | - | mA | 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 |
| RS-232 Output Short-Circuit Current | - | - | ±15 | mA | - |
| Maximum Data Rate | - | - | 460 | kbps | VCC = 3.3 V, RL = 3 kΩ to 7 kΩ, CL = 50 pF to 1000 pF |
| Transmitter Propagation Delay | 0.3 | - | 1.2 | μs | RL = 3 kΩ, CL = 1000 pF |
| Receiver Propagation Delay | 0.4 | - | 1 | μs | - |
Key Features
- Single 3.3 V Power Supply: Operates from a single 3.3 V power supply, eliminating the need for additional voltage sources.
- High-Speed Data Transmission: Supports data rates up to 460 kbps, making it suitable for high-speed data links.
- Low Power Consumption: Low power consumption, with a shutdown facility available in some variants, ideal for battery-powered devices.
- ESD Protection: ESD protection to IEC 1000-4-2 (801.2) on RS-232 pins, with ±8 kV contact discharge and ±15 kV air gap discharge.
- Internal Voltage Doubler/Inverter: Generates the necessary RS-232 voltage levels from the single 3.3 V supply using external capacitors.
- CMOS and TTL/CMOS Compatible Inputs: Transmitter inputs accept TTL/CMOS levels, and receiver outputs are CMOS logic levels.
- Internal 5 kΩ Pull-Down Resistors: On each RS-232 input, providing protection against overvoltages up to ±30 V.
Applications
- General-Purpose RS-232 Data Links: Suitable for various RS-232 applications requiring high-speed data transmission.
- Portable Instruments: Ideal for battery-powered portable instruments due to low power consumption and shutdown facility.
- Printers and Palmtop Computers: Used in printers, palmtop computers, and PDAs where low power and high-speed data transmission are required.
Q & A
- What is the operating voltage range of the ADM3202ARNZ-REEL7?
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 ADM3202ARNZ-REEL7?
The maximum data rate supported is up to 460 kbps.
- Does the ADM3202ARNZ-REEL7 have ESD protection?
- What type of inputs and outputs does the ADM3202ARNZ-REEL7 support?
The transmitter inputs accept TTL/CMOS levels, and the receiver outputs are CMOS logic levels.
- How many channels does the ADM3202ARNZ-REEL7 have?
- What is the package type of the ADM3202ARNZ-REEL7?
- Is the ADM3202ARNZ-REEL7 RoHS compliant?
- What are the typical applications of the ADM3202ARNZ-REEL7?
- How does the ADM3202ARNZ-REEL7 generate RS-232 voltage levels?
- Does the ADM3202ARNZ-REEL7 have internal pull-down resistors?
