[ASAHI KASEI]
ANALOG CHARACTERISTICS
Ta=25°C, AVdd=DVdd=3.0V, signal=1kHz, Sampling Frequency : Fs=44.1kHz Measurement frequency=20
∼
20kHz
unless otherwise specified
Parameter
min
typ
Max
Units
Mono(1ch) ADC
Resolution
16
Bits
S/N (A weighting)
82
dBA
@ MIC gain=20dB, IPGA=0dB
S/(N+D)
77
dB
@ MIC gain=20dB, IPGA=0dB, Ain= - 1dBFS
Input voltage Range
0.06*VA
Vp-p
@ MIC gain=20dB, IPGA=0dB
MIC Amplifier
Input Impedance
30
k
Gain(Fixed)
20
dB
AGC(IPGA)
Step Size
0.5
dB
Gain Control Range
-8
27.5
dB
Stereo(2ch)DAC:
Resolution
16
Bits
S/N (A weighting)
@fs=44.1kHz, Fin=1kHz, noise band=20kHz, 256fs_mode
88
dBA
( Reference ) @fs=8kHz, fin=1kHz, noise band=20kHz,
84
dBA
512fs_mode
S/(N+D)
84
dB
@fs=44.1kHz, Fin=1kHz, noise band=20kHz, 256fs_mode
Output Voltage
0.6*VA
Vp-p
Voltage Reference (Audio)
VCOM,VCOMAD
0.5*VA
V
ADC for Touch Panel
Resolution
12
Bits
Integral Linearity Error @100kHz
1.5
LSB
@ External Rin=500Ω, FS=3V(TP mode)
Differential Linearity Error @100kHz
1
LSB
@ External Rin=500Ω, FS=3V(TP mode)
Touch Panel Driver (ADC mode)
10
ON- Resistance (Top side) @VA=3V, RL=300Ω
Ω
10
ON- Resistance (Bottom side) @VA=3V, RL=300Ω
Ω
10
mA
( Reference ) Drive Current @VA=3V, RL=300Ω
Touch Panel Driver (Pen waiting State)
Pull down Resistance for TSX_Bottom
20
kΩ
TPVREFIN (VRIN)
2.5
VA
V
Power Supply Current (VA+VD)
Total Power ON (exclude TP_Drive current)
20
mA
Audio ADC + GAMP +IPGA (exclude VCOM)
9
mA
Audio DAC (2channel) (exclude VCOM)
9
mA
Touch Panel ADC (exclude TP_Drive current, VCOM)
1.2
mA
VCOM (RESTB=L)
0.37
mA
10
mA
Touch Panel Driver Current @VA=3V, RL=300Ω
Full Power Down (PDB=L)
3
uA
<Revision 0.9a>
7
July 00
AKM [ ASAHI KASEI MICROSYSTEMS ]
