WM8740 Wolfson Microelectronics plc, WM8740 Datasheet - Page 5

• Manufacturer Part Number: WM8740
• Description: 24-bit, High Performance 192khz Stereo Dac
• Manufacturer: Wolfson Microelectronics plc

WM8740
Note: Digital input pins have Schmitt trigger input buffers.
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings are stress ratings only. Permanent damage to the device may be caused by continuously operating at
or beyond these limits. Device functional operating limits and guaranteed performance specifications are given under Electrical
Characteristics at the test conditions specified
Wolfson tests its package types according to IPC/JEDEC J-STD-020B for Moisture Sensitivity to determine acceptable storage
conditions prior to surface mount assembly. These levels are:
MSL1 = unlimited floor life at <30°C / 85% Relative Humidity. Not normally stored in moisture barrier bag.
MSL2 = out of bag storage for 1 year at <30°C / 60% Relative Humidity. Supplied in moisture barrier bag.
MSL3 = out of bag storage for 168 hours at <30°C / 60% Relative Humidity. Supplied in moisture barrier bag.
Note: It is strongly recommended that AVDD, AVDDL and AVDDR are tied together. AGND, AGNDL and AGND right
w
CONDITION
Supply voltage
Input
Operating temperature range, T
Storage temperature prior to soldering
Storage temperature after soldering
PIN
23
24
25
26
27
28
must also be tied together.
CSBIWO
MD/DM0
MC/DM1
MUTEB
ML/I2S
MODE
NAME
ESD Sensitive Device. This device is manufactured on a CMOS process. It is therefore generically susceptible
to damage from excessive static voltages. Proper ESD precautions must be taken during handling and storage
of this device.
Internal pull-down
Internal pull-up
Internal pull-up
Internal pull-up
Internal pull-up
Internal pull-up
Digital input
Digital input
Digital input
Digital input
Digital input
Digital input
TYPE
A
Hardware Mode
Low for hardware
mode.
Low to soft mute.
High for normal
operation.
De-emphasis mode
select bit 0.
De-emphasis mode
select bit 1.
Audio serial format:
Low – right justified.
High – I
DESCRIPTION
Normal Mode
Wordlength:
Low for 16-bit data.
High for 20-bit
(normal) or 24-bit
I
2
S data.
2
S.
Differential Mode
Wordlength:
Low for 16-bit data.
High for 20-bit
(normal) or 24-bit
I
Low for left
mono mode.
High for right
mono mode
Low to soft mute.
High for normal
operation.
Low for no
de-emphasis.
High for 44.1kHz
de-emphasis.
Low for normal filter
operation.
High for filter slow
roll-off.
Audio serial format:
Low – right justified.
High – I
2
S data.
2
S.
GND -0.3V
-40 ° C
-65°C
-0.3V
MIN
30°C max / 85% RH max
8X Mode
Wordlength:
Low for 20-bit data.
High for 24-bit data.
DINR
Low to soft mute.
High for normal
operation.
LRP – LRCLK
polarity select.
Unused.
Leave unconnected.
Input data format:
Low – right justified.
High – left justified.
PD, Rev 4.3, August 2009
VDD + 0.3V
+150°C
+85 ° C
+7.0V
MAX
Production Data
Software
Mode
Low for
serial
interface
operation.
High for
software
mode.
Low to
soft mute.
High for
normal
operation.
Control serial
interface
data signal.
Control serial
interface
clock signal.
Control serial
interface
load signal.
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