AK4650 Datasheet, PDF (14/86 Pages) Asahi Kasei Microsystems – 16Bit ΔΣ CODEC with MIC/HP/SPK-AMP & TSC

[AK4650]
ANALOG CHARACTERISTICS (TSC Block)
(Ta=25°C; AVDD, DVDD, HVDD, TSVDD=3.3V; AVSS=DVSS=HVSS=TSVSS=0V; External Vref=2.5V, unless
otherwise specified) fs=96kHz
Parameter
min
typ
max
Units
ADC for Touch Screen
Resolution
-
12
-
Bits
No Missing Codes
10
12
-
Bits
Integral Linearity Error
-
-
±5
LSB
DNL
-
±2
-
LSB
Analog Input Voltage Range
0
-
VREF
V
Offset Error
-
-
±6
LSB
Gain Error
-
-
±4
LSB
Touch Screen Driver
X+, Y+, RL=300Ω
-
5
-
Ω
X−, Y−, RL=300Ω
-
5
-
Ω
PSRR (10KHz 100mVpp)
-
70
-
dB
Reference Output
Internal Reference
2.425
2.50
2.575
V
Drift
-
30
-
ppm/°C
Load Capacitance
0.1
-
-
μF
Reference Input
Input Voltage Range
-
-
TSVDD
V
Battery Monitor
Input Voltage Range
-
-
5.0
V
Input Impedance (Battery Measure Mode)
5
10
-
kΩ
Accuracy (Note 29)
External VREF
-
-
±2
%
Internal VREF
-
-
±4
%
Note 29. Accuracy is the difference between the output code when 5 volts is input to the VBAT pin and the “ideal” code
at 1.25 volts.
MS0502-E-01
- 14 -
2007/04