ht82a821r Holtek Semiconductor Inc., ht82a821r Datasheet - Page 4

• Manufacturer Part Number: ht82a821r
• Description: Ht82a821r -- Usb Audio Mcu
• Manufacturer: Holtek Semiconductor Inc.

D.C. Characteristics
Note: 1. Sine wave input at 1kHz, 6dB
A.C. Characteristics
Note: t
Rev. 1.10
V
I
I
I
V
V
V
V
I
I
R
V
V
DAC+Power Amp:
Test condition: Measurement bandwidth 20Hz to 20kHz, f
THD+N
SNR
DR
P
f
t
t
t
t
Symbol
Symbol
DD
STB1
STB2
OL
OH
SYS
WDTOSC
RES
SST
INT
DD
IL1
IH1
IL2
IH2
LVR
V33O
OUT
PH
SYS
Operating Voltage
Operating Current
Standby Current
Standby Current
Input Low Voltage for I/O Ports
Input High Voltage for I/O Ports
Input Low Voltage (RESET)
Input High Voltage (RESET)
I/O Port Sink Current
I/O Port Source Current
Pull-high Resistance
Low Voltage Reset
3.3V Regulator Output
THD+N
Signal to Noise Ratio
Dynamic Range
Output Power
System Clock (Crystal OSC)
Watchdog Oscillator Period
RESET Input Pulse Width
System Start-up Timer Period
Interrupt Pulse Width
=1/f
SYS
Note1
Parameter
Parameter
Note1
V
V
5V
5V No load, f
5V
5V
5V
5V
5V
5V
5V V
5V V
5V
5V
5V I
5V
5V
5V
5V
5V
5V
DD
DD
No load, system HALT,
USB suspend
No load, system HALT,
USB transceiver and 3.3V
regulator on
4 load
8 load
4 load
8 load
4 load
8 load
4 load, THD=10%
8 load, THD=10%
V33O
OL
OH
Test Conditions
Test Conditions
=0.1V
=0.7V
= 5mA
4
S
= 48kHz. Line output series capacitor with 220 F.
Conditions
Conditions
SYS
DD
DD
=12MHz
0.7V
0.9V
Min.
Min.
3.3
2.7
0.4
30
0
0
3
1
1
DD
DD
1024
Typ.
Typ.
146
400
200
100
3.3
50
81
82
87
88
5
9
3
5
3
30
35
5
HT82A821R
0.3V
0.4V
Max.
Max.
V
V
5.5
3.3
3.6
90
12
June 29, 2007
DD
DD
DD
DD
Ta=25 C
Ta=25 C
mW/ch
MHz
Unit
Unit
t
mA
mA
mA
k
dB
dB
dB
SYS
V
V
V
V
V
V
V
A
A
s
s
s