Datasheet

TAS5508C
SLES257–SEPTEMBER 2010 www.ti.com
4.5 Electrical Characteristics
Over recommended operating conditions (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
3.3-V TTL and 5 V
(1)
tolerant I
OH
= –4 mA 2.4
V
OH
High-level output voltage V
1.8-V LVCMOS (XTL_OUT) I
OH
= –0.55 mA 1.44
3.3-V TTL and 5 V
(1)
tolerant I
OL
= 4 mA 0.5
V
OL
Low-level output voltage V
1.8-V LVCMOS (XTL_OUT) I
OL
= 0.75 mA 0.5
I
OZ
High-impedance output current 3.3-V TTL ±20 mA
3.3-V TTL V
I
= V
IL
±1
I
IL
Low-level input current 1.8-V LVCMOS (XTL_IN) V
I
= V
IL
±1 mA
5 V tolerant
(2)
V
I
= 0 V, DVDD = 3 V ±1
3.3-V TTL V
I
= V
IH
±1
I
IH
High-level input current 1.8-V LVCMOS (XTL_IN) V
I
= V
IH
±1 mA
5 V tolerant
(2)
V
I
= 5.5 V, DVDD = 3 V ±20
Fs = 48 kHz 140
Fs = 96 kHz 150
Digital supply voltage, DVDD mA
Fs = 192 kHz 155
I
DD
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.
4.6 PWM Operation
Over recommended operating conditions
PARAMETER TEST CONDITIONS MODE VALUE UNIT
32-kHz data rate ±4% 12× sample rate 384 kHz
Output sample rate 1×–8× oversampled 44.1-, 88.2-, 176.4-kHz data rate ±4% 8×, 4×, or 2× sample rate 352.8 kHz
48-, 96-, 192-kHz data rate ±4% 8×, 4×, or 2× sample rate 384 kHz
4.7 Switching Characteristics
4.7.1 Clock Signals
PLL input parameters and external filter components over recommended operating conditions (unless otherwise noted)
(1)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
f
XTALI
Frequency, XTAL IN Only use 13.5-MHz crystal ≤1000 ppm 13.5 MHz
f
MCLKI
Frequency, MCLK (1/t
cyc2
) 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 Ω
External VRA_PLL decoupling SMD, Y5V 100 nF
(1) See the TAS5508C Example Application Schematic, Section 8.
56 Electrical Specifications Copyright © 2010, Texas Instruments Incorporated
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