AK8451 Datasheet, PDF (1/42 Pages) Asahi Kasei Microsystems – 1 channel-input 16 bit 6MSPS ADC

[AK8451]
AK8451
1 channel-input 16 bit 6MSPS ADC
Device Outline
■AFE Block
The AK8451 is a +3.3 V, Two Channel 16 Bit 6MSPS ADC which integrates on-chip Offset
Adjust DAC, Gain Adjust PGA, CDS circuit and <4.5~5.7V> 3 channel LED Drivers.
■ LED Driver Block
This product is the 3 channel LED driver who drives the LED of the anode common in the
constant current. The current to pass for each channel can be adjusted by the external resistance
and the register setting. Also, it has the control pins which turn on or off the current.
Features
■AFE Block
… CCD I/F
Number of Channels
1 channel
Range
1.98 Vpp (typ.)
Signal Input Range
0~3.3V @ DC Direct Coupled input mode at AVDD = 3.3 V
Integrated On-chip CDS circuit
Compatible with both Positive and Negative signal polarities
… ADC
Maximum Conversion Rate 6 MSPS
Resolution
16 Bit (Straight Binary Code)
… Black Level Correction DAC
Correctable Range
± 240 mV (typ.)
Resolution
… Gain Adjust
8 Bit
Adjustable Range
0 dB ~ +13.9 dB (typ.) (1.0× ~ 4.9×)
Resolution
6 Bit
… Total Performance ( Input ~ Video ADC )
Output Noise
… Data Output
… Power Supplies
5 LSBs rms (typ.) @ PGA Gain = 0 dB setting
2 bit wide or 4bit wide
Analog part: +3.3V ±5 % / Digital Output part: +3.3V ±0.3V
… CPU I/F
3-Wire Serial Interface (Write Only)
… Power Dissipation
Clock, Data are commonly shared with A/D Data Output pins
132mW (typ.) with DC Direct Coupled input mode at AVDD= 3.3V
… Operating Temperature Range
0 °C ~ +70 °C
… Package
28 Pin QFN
… VREF Output for CCD:
Pin pitch: 0.4 mm, Mold size: 4 mm × 4 mm
1.1V±100mV。10mAmax.
MS0937-E-01
1
2011/04