High Precision Reference Voltage Generator
RT9403A/B/C
I2C Programmable High Precision Reference Voltage Generator
General Description
Features
The RT9403A/B/C...
Description
RT9403A/B/C
I2C Programmable High Precision Reference Voltage Generator
General Description
Features
The RT9403A/B/C is a high precision reference voltage generating console consisting of three I2C programmable DACs. Each DAC output voltage is controlled by 7 digital bits that are programmed by the I2C interface. The RT9403A/B/C features adjustable output slew rate, low switching glitch and adequate driving capability. The RT9403A/B/C is available in SOT-23-8 package.
Ordering Information
RT9403A/B/C Package Type V8 : SOT-23-8
z 5V Supply Voltage z Provide 3 Precise Voltage DACs z I2C Programmable 128-Steps Output Voltage z Output Range and Resolution
` DAC1 & DAC2 : 0.6V to 2.1875V, 12.5mV/Step ` DAC3 : 1.2V to 3.375V, 12.5mV (or 25mV)/Step for Different Segments z High Output Accuracy Up to 1% (VOUT ≥ 1V) z Low External Component Count z Small Footprint SOT-23-8 Package z RoHS Compliant and Halogen Free
Lead Plating System
Applications
G : Green (Halogen Free and Pb Free)
z Power Supply Adjustment for Motherboard and Graphic
Address Bit [A1,A0]
A : [0,1]
Card
B : [1,0]
z Low Voltage, High Accuracy Reference Voltage Circuit
C : [1,1]
Note : Richtek products are :
Pin Configurations
(TOP VIEW)
S3/EN VOUT3 VOUT2 VOUT1
` RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
` Suitable for use in SnPb or Pb-free soldering processes.
87 6 5
VDD GND SCL SDA
Marking Information
RT9403AGV8
01=DNN
01= : Product Code DNN : Date...
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