Overview
The ADV7127KRU140, produced by Analog Devices Inc., is a high-speed, 10-bit digital-to-analog converter (DAC) designed for video applications. It is fabricated in a complementary metal-oxide semiconductor (CMOS) process, ensuring low power dissipation and high functionality. The device features an on-board voltage reference, complementary outputs, a standard TTL input interface, and high impedance analog output current sources. It operates on a single 5 V or 3.3 V power supply and is available in a 24-lead TSSOP package, which includes a power-down mode and an on-board voltage reference circuit.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions |
|---|---|---|---|---|---|
| Resolution (Each DAC) | - | - | - | 10 Bits | - |
| Integral Nonlinearity (BSL) | -1 | 0.5 | +1 | LSB | RSET = 680 Ω |
| Differential Nonlinearity | -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 | - | - | +1.4 | V | - |
| Output Impedance, ROUT | - | - | 70 kΩ | - | - |
| Power Supply Voltage | 3.0 | - | 5.25 | V | - |
| Operating Temperature Range | -40 | - | +85 | °C | - |
| Power Dissipation (Typical) | - | 30 | - | mW | @ 3 V |
| Standby Power (Typical) | - | 10 | - | mW | @ 3 V |
| Power-Down Current (Typical) | - | 20 | - | μA | - |
Key Features
- 10-bit video DAC with on-board voltage reference
- Complementary outputs and high impedance analog output current sources
- Standard TTL input interface
- Single 5 V or 3.3 V power supply operation
- Low power dissipation and low power standby mode
- Power-down mode available on TSSOP package
- Industrial temperature range: -40°C to +85°C
- Available in 24-lead TSSOP package
- Guaranteed monotonic to 10 bits
- RS-343A/RS-170 compatible output
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 power supply options for the ADV7127? The ADV7127 can operate on a single 5 V or 3.3 V power supply.
- What is the operating temperature range of the ADV7127? The operating temperature range is -40°C to +85°C.
- What types of packages are available for the ADV7127? The ADV7127 is available in a 24-lead TSSOP package.
- Does the ADV7127 have a power-down mode? Yes, the TSSOP package of the ADV7127 includes a power-down mode.
- What is the typical power dissipation of the ADV7127? The typical power dissipation is 30 mW at 3 V.
- Is the ADV7127 compatible with TTL logic levels? Yes, the ADV7127 accepts TTL logic levels on its digital inputs.
- What are some of the key applications of the ADV7127? Key applications include digital video systems, high resolution color graphics, digital radio modulation, image processing, and more.
- How does the ADV7127 ensure monotonicity? The ADV7127 uses identical current sources in a monolithic design to ensure monotonicity and low glitch.
- What is the output compliance range of the ADV7127? The output compliance range is up to +1.4 V.
