Overview
The AD8123ACPZ-R7, manufactured by Analog Devices Inc., is a triple differential receiver with adjustable line equalization. This component is designed to compensate for signal losses in Unshielded Twisted Pair (UTP) and coaxial cables, making it suitable for high-resolution video applications such as RGB and HD YPbPr. The device operates over an extended temperature range of -40°C to +85°C and is packaged in a 40-lead Lead Frame Chip Scale Package (LFCSP).
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Voltage Range | ±4.5 | - | ±5.5 | V |
| Positive Quiescent Supply Current | - | - | 132 | mA |
| Negative Quiescent Supply Current | - | - | 126 | mA |
| Output Voltage Swing (150 Ω load) | -3.75 | - | +3.69 | V |
| Output Offset Voltage (referred to output) | - | - | 24 mV (VPEAK = VGAIN = VPOLE = 0 V) | mV |
| Output Offset Voltage Drift | - | - | 33 µV/°C | µV/°C |
| Power Down Supply Current (Positive/Negative) | - | - | 1.1 µA / 0.7 µA | µA |
| Operating Temperature Range | -40 | - | +85 | °C |
Key Features
- Triple differential receiver with adjustable line equalization for UTP and coaxial cables up to 300 meters in length.
- Three continuously adjustable control voltages (VPEAK, VGAIN, VPOLE) for compensating cable losses and variations.
- High impedance differential inputs suitable for direct connection to cables.
- Low output offset voltage and drift, ensuring stable output signals.
- On-chip comparators with logic circuitry for sync pulse extraction and encoding.
- Fast rise and fall times, with 4.9 ns rise/fall time at 150 meters of UTP cable.
- Operates over an extended temperature range of -40°C to +85°C.
Applications
- High-resolution RGB video applications, including UXGA resolution images.
- HD YPbPr video applications.
- Driving 75 Ω video cables and capacitive loads.
- Sync pulse extraction and encoding using on-chip comparators).
- General video signal equalization in various cable lengths and types).
Q & A
- What is the primary function of the AD8123ACPZ-R7?
The AD8123ACPZ-R7 is a triple differential receiver designed to compensate for signal losses in UTP and coaxial cables, particularly in high-resolution video applications.
- What is the operating temperature range of the AD8123ACPZ-R7?
The operating temperature range is -40°C to +85°C.
- What are the key control voltages for adjusting cable compensation?
The key control voltages are VPEAK for high frequency peaking, VGAIN for broadband flat gain, and VPOLE for adjusting the pole location.
- What is the typical output offset voltage of the AD8123ACPZ-R7?
The typical output offset voltage is 24 mV when VPEAK, VGAIN, and VPOLE are set to 0 V.
- Can the AD8123ACPZ-R7 be used with coaxial cables?
- What is the package type of the AD8123ACPZ-R7?
The package type is a 40-lead Lead Frame Chip Scale Package (LFCSP).
- What is the maximum supply voltage for the AD8123ACPZ-R7?
The maximum supply voltage is ±5.5 V.
- Does the AD8123ACPZ-R7 have on-chip comparators?
- What is the typical rise and fall time of the AD8123ACPZ-R7?
The typical rise and fall time is 4.9 ns with a 2 V step at 150 meters of UTP cable.
- Is the AD8123ACPZ-R7 suitable for high-resolution RGB applications?
