Overview
The ADV7127KR50, produced by Analog Devices Inc., is a high-speed, 10-bit digital-to-analog converter (DAC) integrated on a single monolithic chip. This device is designed for high-performance video applications and features an on-board voltage reference, complementary outputs, and a standard TTL input interface. The ADV7127 operates with a single 5 V or 3.3 V power supply and is fabricated using a complementary metal-oxide semiconductor (CMOS) process, ensuring low power dissipation and high functionality.
Key Specifications
| Parameter | Min | Typ | Max | Units | Test Conditions |
|---|---|---|---|---|---|
| Resolution (Each DAC) | 10 | Bits | |||
| Integral Nonlinearity (INL) | -1 | 0.5 | +1 | LSB | RSET = 680 Ω |
| Differential Nonlinearity (DNL) | -1 | 0.25 | +1 | LSB | RSET = 680 Ω |
| Input High Voltage (VIH) | 2.0 | V | |||
| Input Low Voltage (VIL) | 0.8 | V | |||
| Output Current | 2.0 | 18.5 | mA | ||
| Output Compliance Range (VOC) | 0 | 1.4 | V | ||
| Output Impedance (ROUT) | 70 | kΩ | |||
| Power Supply Voltage (VAA) | 4.75 | 5.0/3.3 | 5.25 | V | |
| Operating Temperature Range | -40 | 85 | °C | ||
| Package Type | SOIC-28, TSSOP-24 |
Key Features
- High-speed 10-bit video DAC with a throughput of 240 MSPS.
- On-board voltage reference (1.23 V) and complementary outputs.
- Standard TTL input interface and high impedance analog output current sources.
- Single supply operation at 5 V or 3.3 V.
- Low power dissipation with low power standby and power-down modes.
- Industrial temperature range (-40°C to +85°C).
- Available in 28-lead SOIC and 24-lead TSSOP packages.
- Guaranteed monotonic to 10 bits.
Applications
- Digital video systems (e.g., 1600 × 1200 at 100 Hz).
- High resolution color graphics.
- Digital radio modulation.
- Image processing.
- Instrumentation.
- Video signal reconstruction.
- Direct digital synthesis (DDS).
- Wireless local area networks (LANs).
Q & A
- What is the resolution of the ADV7127 DAC?
The ADV7127 is a 10-bit DAC.
- What are the typical operating voltages for the ADV7127?
The ADV7127 operates with a single 5 V or 3.3 V power supply.
- What is the throughput of the ADV7127?
The ADV7127 has a throughput of 240 MSPS.
- What types of packages are available for the ADV7127?
The ADV7127 is available in 28-lead SOIC and 24-lead TSSOP packages.
- Does the ADV7127 have a power-down mode?
Yes, the ADV7127 has a power-down mode, especially in the TSSOP package.
- What is the operating temperature range of the ADV7127?
The operating temperature range is -40°C to +85°C.
- What kind of input interface does the ADV7127 have?
The ADV7127 has a standard TTL input interface.
- Can the ADV7127 drive a 75 Ω coaxial cable directly?
Yes, the ADV7127's high impedance current source can directly drive a doubly terminated 75 Ω coaxial cable.
- What is the purpose of the RSET pin on the ADV7127?
The RSET pin controls the magnitude of the full-scale video signal output.
- Is the ADV7127 suitable for high-resolution color graphics applications?
Yes, the ADV7127 is suitable for high-resolution color graphics applications.
