ST5090 ST Microelectronics, ST5090 Datasheet - Page 26

• Manufacturer Part Number: ST5090
• Description: LOW VOLTAGE 14-BIT LINEAR CODEC WITH HIGH-PERFORMANCE AUDIO FRONT-END
• Manufacturer: ST Microelectronics

ST5090
APPLICATIONS
Application Note for Microphone Connections
Application Note for V
POWER SUPPLIES
While pins of ST5090 device are well protected
against electrical misuse, it is recommended that
the standard CMOS practise of applying GND be-
fore any other connections are made should al-
ways be followed. In applications where the
printed circuit card may be plugged into a hot
socket with power and clocks already present, an
extra long ground pin on the connector should be
26/29
DYNAMIC RECEIVERS
R must be greater than 30
For higher capacitive transducers, lower R values can be used.
VFr+
VFr-
VLr+
VLr-
(32 )
ST5090
ST5090
Fr
and V
Lr
Connections
R
R
CERAMIC RECEIVERS
VFr+
VFr-
VLr+
VLr-
(50nF)
ST5090
used.
To minimize noise sources, all ground connec-
tions to each device should meet at a common
point as close as possible to the GND pin in order
to prevent the interaction of ground return cur-
rents flowing through a common bus impedance.
A power supply decoupling capacitor of 0.1 F
should be connected from this common point to
V
ST5090
CC
as close as possible to the device pins.
D93TL078A
R
DYNAMIC/CERAMIC RECEIVERS
VFr+
VFr-
VLr+
VLr-
(REVERSIBLE)
ST5090
ST5090