AK8456 Datasheet, PDF (10/32 Pages) Asahi Kasei Microsystems – 3 channel input 16bit 30MSPS Video ADC with LED driver

[AK8456]
 AFE Block Analog Characteristics 2
These specifications are defined under the condition external parts and their constants are in External
Circuit Example.
Normal operation
Stand By
(AVDD=OVDD=3.0～3.6V, LVDD=4.5～5.7V, Ta=25C, ADCK=30MHz)
Current consumption
AVDD
OVDD
LVDD
(note 4)
(note 5)
(note 6)
37.4 51.2 mA
8.6
25.5 mA
6.2
8.4 mA
ISTB
2.2
3
mA
These specifications are defined under the condition external parts and their constants are in External
Circuit Example.
(Note1) No signal noise is defined as sigma(σ) of ADC code deviation under no input signal.
(Note2) When no input signal is applied, ADC code changes from 0000h to 0001h between offset
DAC 50mV and offset DAC 50mV. The offset DAC cancels this internal offset as well as
signal offset. Thus adjust range for input signal offset is reduced by the internal offset.
(Note3) ADCK=30MHz, 3ch, PGA Gain of all channel is minimum. Cross talk is defined, as change
of output code when measured channel input is fixed and all other channel inputs is full-scale
 2dB step signal.
(Note4) ADCK=30MHz, Input -2dB of 1.5Vpp sine wave, 1MHz signal to three channels.
(Note5) Load Capacitance10pF
(Note6) @ LED_R=100%, LED_G=25%, LED_B=25% setting (except LED drive current)
 LED Driver Analog Characteristics
(Unless otherwise specified, AVDD=OVDD=3.3V, LVDD=5.0V, Ta=0C~70C,
ADCK=30MHz)
Item
Min. Typ. Max. Unit Remarks
Maximum LED Current 60.5 67.2 73.9 mA/ch ISET Resistance=8.2kΩ
per Channel
LED_R/G/B Pin Voltage=2.0V
Total Maximum LED
100.8
mA
Current
LED Current Setting 5
5
% LED_R/G/B Pin Voltage=2.0V
Accuracy
Dependence of LED 2.5
2.5
% LED_R/G/B Pin’s Reference
Current on LED_R/G/B
Voltage = 2.0V
Pin Voltage
LED_R/G/B Pin Voltage 0.3
LVDD V Driving Current
1.1
014002433-E-00
- 10 -
2014/06