Datasheet

LM49350, LM49350RLEVAL
SNAS359D –SEPTEMBER 2008–REVISED JUNE 2012 www.ti.com
TIMING CHARACTERISTICS: DV
DD
= I/OV
DD
= 1.8V
(1)(2)
The following specifications apply for R
L(SP)
= 8Ω, R
L(HP)
= 32Ω, f = 1kHz, unless otherwise specified. Limits apply for T
A
=
25°C.
LM49350
Units
Symbol Parameter Conditions
Typical
(3
(Limits)
Limit
(4)
)
PLL
Minimum MCLK Frequency 0.5 MHz (min)
f
IN
PLL Input Frequency Range
Maximum MCLK Frequency 50 MHz (max)
DIGITAL AUDIO INTERFACE TIMING
t
BCLKR
BCK rise time 3 ns (max)
t
BCLKCF
BCK fall time 3 ns (max)
t
BCLKDS
BCK duty cycle 50 %
WS Propagation Delay from BCK
t
DL
10 ns (max)
falling edge
t
DST
DATA Setup Time to BCK Rising Edge 10 ns (min)
DATA Hold Time from BCK Rising
t
DHT
10 ns (min)
Edge
CONTROL INTERFACE TIMING
SCL Frequency 400 kHz (max)
Hold Time (repeated START
1 0.6 μs (min)
Condition)
2 Clock Low Time 1.3 μs (min)
3 Clock High Time 600 ns (min)
Setup Time for a Repeated START
4 600 ns (min)
Condition
300 ns (min)
Output
900 ns (max)
5 Data Hold Time
0 ns (min)
Input
900 ns (max)
6 Data Setup Time 100 ns (min)
20+0.1C
B
ns (min)
7 Rise Time of SDA and SCL
300 ns (max)
15+0.1C
B
ns (min)
8 Fall Time SDA and SCL
300 ns (max)
9 Setup Time for STOP Condition 600 ns (min)
Bus Free Time Between a STOP and
10 1.3 μs (min)
START Condition
10 pF (min)
C
B
Bus Capacitance
200 pF(max)
(1) “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur, including inoperability and degradation of
device reliability and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or
other conditions beyond those indicated in the Recommended Operating Conditions is not implied. The Recommended Operating
Conditions indicate conditions at which the device is functional and the device should not be operated beyond such conditions. All
voltages are measured with respect to the ground pin, unless otherwise specified.
(2) The Electrical Characteristics tables list ensured specifications under the listed Recommended Operating Conditions except as
otherwise modified or specified by the Electrical Characteristics Conditions and/or Notes. Typical specifications are estimations only and
are not ensured.
(3) Typical values represent most likely parametric norms at T
A
= +25ºC, and at the Recommended Operation Conditions at the time of
product characterization and are not ensured.
(4) Datasheet min/max specification limits are specified by test or statistical analysis.
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