Overview
The AD5770RBCBZ-RL7, produced by Analog Devices Inc., is a 6-channel, 14-bit resolution, low noise, programmable current output digital-to-analog converter (DAC) designed specifically for photonics control applications. This device features a 1.25 V on-chip voltage reference, a 2.5 kΩ precision resistor for reference current generation, and integrated functions such as die temperature monitoring, output current monitoring, fault alarm, and reset. The AD5770R contains five 14-bit resolution current sourcing DAC channels and one 14-bit resolution current sourcing and sinking DAC channel, making it highly versatile for various current output requirements.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Resolution | 14 bits | ||||
| Number of Channels | 6 | ||||
| Output Current Range (Channel 0) | −60 mA to +300 mA | mA | Configurable | ||
| Output Current Range (Channel 1) | 0 mA to 140 mA, 0 mA to 250 mA | mA | Configurable | ||
| Output Current Range (Channel 2) | 0 mA to 55 mA, 0 mA to 150 mA | mA | Configurable | ||
| Output Current Range (Channel 3-5) | 0 mA to 45 mA, 0 mA to 100 mA | mA | Configurable | ||
| Voltage Reference Output | 1.245 | 1.25 | 1.255 | V | TA = 25°C, reference output on |
| Reference Temperature Coefficient | 15 | ppm/°C | |||
| Operating Temperature | −40 | +105 | °C | ||
| Package Type | 49-Ball WLCSP (4.04 mm x 4.04 mm x 0.60 mm) | ||||
| Supply Voltage (AVDD) | 2.9 | 5.5 | V | ||
Key Features
- 6-channel, 14-bit resolution, low noise, programmable current output DAC
- On-chip 1.25 V voltage reference and 2.5 kΩ precision resistor for reference current generation
- Integrated functions: die temperature monitoring, output current monitoring, fault alarm, and reset
- Channel 0 can source up to 300 mA and sink up to 60 mA; other channels have multiple programmable output current ranges
- SPI interface for communication
- Compliance voltage monitor and output current monitor
- Integrated thermal shutdown for protection
- Operating temperature range: −40°C to +105°C
Applications
- Photonics control
- LED driver programmable current source
- Current mode biasing
Q & A
- What is the resolution of the AD5770R DAC?
The AD5770R has a 14-bit resolution.
- How many channels does the AD5770R have?
The AD5770R has 6 channels.
- What are the output current ranges for each channel?
Channel 0: −60 mA to +300 mA; Channel 1: 0 mA to 140 mA, 0 mA to 250 mA; Channel 2: 0 mA to 55 mA, 0 mA to 150 mA; Channel 3-5: 0 mA to 45 mA, 0 mA to 100 mA.
- What is the voltage reference output of the AD5770R?
The voltage reference output is 1.25 V.
- What is the operating temperature range of the AD5770R?
The operating temperature range is −40°C to +105°C.
- What type of interface does the AD5770R use for communication?
The AD5770R uses an SPI interface for communication.
- Does the AD5770R have integrated thermal shutdown?
Yes, the AD5770R has integrated thermal shutdown for protection.
- What are some common applications of the AD5770R?
Common applications include photonics control, LED driver programmable current source, and current mode biasing.
- What is the package type of the AD5770R?
The package type is a 49-Ball WLCSP (4.04 mm x 4.04 mm x 0.60 mm).
- What is the supply voltage range for the AD5770R?
The supply voltage range is 2.9 V to 5.5 V.
