参数资料
型号: TAS5508PAGR
厂商: TEXAS INSTRUMENTS INC
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP64
封装: GREEN, PLASTIC, TQFP-64
文件页数: 58/105页
文件大小: 1286K
代理商: TAS5508PAGR
4.5
Electrical Characteristics
4.6
PWM Operation
4.7
Switching Characteristics
4.7.1
Clock Signals
TAS5508
8-Channel Digital Audio PWM Processor
SLES091D – FEBRUARY 2004 – REVISED JULY 2009
www.ti.com
Over recommended operating conditions (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
3.3-V TTL and 5 V(1) tolerant
IOH = –4 mA
2.4
VOH
High-level output voltage
V
1.8-V LVCMOS (XTL_OUT)
IOH = –0.55 mA
1.44
3.3-V TTL and 5 V(1) tolerant
IOL = 4 mA
0.5
VOL
Low-level output voltage
V
1.8-V LVCMOS (XTL_OUT)
IOL = 0.75 mA
0.5
IOZ
High-impedance output current
3.3-V TTL
=20
A
3.3-V TTL
VI = VIL
=1
IIL
Low-level input current
1.8-V LVCMOS (XTL_IN)
VI = VIL
=1
A
5 V tolerant(2)
VI = 0 V, DVDD = 3 V
=1
3.3-V TTL
VI = VIH
=1
IIH
High-level input current
1.8-V LVCMOS (XTL_IN)
VI = VIH
=1
A
5 V tolerant(2)
VI = 5.5 V, DVDD = 3 V
=20
Fs = 48 kHz
140
Fs = 96 kHz
150
Digital supply voltage, DVDD
mA
Fs = 192 kHz
155
IDD
Input supply current
Power down
8
Normal
20
Analog supply voltage, AVDD
mA
Power down
2
(1)
5-V tolerant outputs are SCL and SDA.
(2)
5-V tolerant inputs are RESET, PDN, MUTE, HP_SEL, SCLK, LRCLK, MCLK, SDIN1, SDIN2, SDIN3, SDIN4, SDA, and SCL.
Over recommended operating conditions
PARAMETER
TEST CONDITIONS
MODE
VALUE
UNIT
32-kHz data rate
=4%
12
= sample rate
384
kHz
8
=, 4=, or 2= sample
44.1-, 88.2-, 176.4-kHz data rate
=4%
352.8
kHz
Output sample rate 1
=–8= oversampled
rate
8
=, 4=, or 2= sample
48-, 96-, 192-kHz data rate
=4%
384
kHz
rate
PLL input parameters and external filter components over recommended operating conditions (unless otherwise noted)
(1)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
fXTALI
Frequency, XTAL IN
Only use 13.5-MHz crystal
≤1000 ppm
13.5
MHz
fMCLKI
Frequency, MCLK (1/tcyc2)
2
50
MHz
MCLK duty cycle
40%
50%
60%
≥2-V MCLK = 49.152 MHz, within the min
MCLK minimum high time
5
ns
and max duty cycle constraints
≤0.8-V MCLK = 49.152 MHz, within the min
MCLK minimum low time
5
ns
and max duty cycle constraints
LRCLK allowable drift before LRCLK reset
10
MCLKs
External PLL filter capacitor C1
SMD 0603 Y5V
100
nF
External PLL filter capacitor C2
SMD 0603 Y5V
10
nF
External PLL filter resistor R
SMD 0603, metal film
200
(1)
See the TAS5508 Example Application Schematic, Section 8.
Electrical Specifications
56
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