AK8456 Datasheet, PDF (1/32 Pages) Asahi Kasei Microsystems – 3 channel input 16bit 30MSPS Video ADC with LED driver

[AK8456]
AK8456
3 channel input 16bit 30MSPS Video ADC with LED driver
1. General Description
AK8456 is an AFE for three channels contact image sensor (CIS). AK8456 has offset adjusting DAC,
digital programmable gain amplifier (PGA) and LED drivers. AK8456 is suitable for multi-function
printer and image scanner.
2. Feature
 Input Block
Channel number
3 channel (1 channel mode is available)
Range
1.3Vpp (min.)
Gain
 ADC
0dB/6dB
Maximum conversion ratio
30MSPS
10MSPS/ch @ 3-channel mode
30MSPS/ch @ 1-channel mode
Resolution
16bit (Straight binary code/Gray code)
 Black correction DAC
Range
369mV (Equivalent input voltage) ＜±250mV(min.)＞
Resolution
6bit
 Digital PGA
Range
0dB~18dB
Resolution
 Output Format
 LED Current
8bit
8bit × 2
67.2mA/ch (typ.) @ Maximum setting
Adjustable by 12.5% resolution channel independently
 CPU I/F
3-wire serial interface
 Supply Voltage
AFE: 3.3V0.3V, LED driver: 4.5V~5.7V
 Power Consumption 190 mW (typ.)：Except LED drive current.
 Operating Temperature 0C~70C
 Package
36pin QFN (Exposed Die Pad), 0.4mm pitch, 5mm5mm
014002433-E-00
-1-
2014/06