SGTL5000XNLA3R2 Freescale Semiconductor, SGTL5000XNLA3R2 Datasheet - Page 27

• Manufacturer Part Number: SGTL5000XNLA3R2
• Description: IC AUDIO CODEC STEREO 20-QFN
• Manufacturer: Freescale Semiconductor
• Type: Stereo Audior

Specifications of SGTL5000XNLA3R2

• Data Interface: I²C, Serial, SPI™
• Number Of Adcs / Dacs: 1 / 1
• Sigma Delta: No
• S/n Ratio, Adcs / Dacs (db) Typ: 90 / 100
• Voltage - Supply, Analog: 1.62 V ~ 3.6 V
• Voltage - Supply, Digital: 1.1 V ~ 2 V, 1.62 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-UFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

SGTL5000 EA2 DS-0-3
LINE_IN
MIC_IN
5.1.
5.2.
I2S_DIN
I2S_DOUT
30dB, 40dB )
(0dB, 20dB,
MIC GAIN
System Block Diagram w/ Signal Flow and Gain Map
Power
5.2.1.
+6dB
Only Gain is shown for the Digital Audio Processing blocks. For complete description
Mix
Figure 10 below shows a block diagram that highlights the signal flow and gain map
for the SGTL5000.
To guarantee against clipping it is important that the gain in a signal path in addition
to the signal level does not exceed 0dB at any point.
The SGTL5000 has a flexible power architecture to allow the system designer to
minimize power consumption and maximize performance at the lowest cost.
External Power Supplies
The SGTL5000 requires 2 external power supplies: VDDA and VDDIO. An optional
third external power supply VDDD may be provided externally to achieve lower
power. A description for the different power supplies is as follows:
•
•
22.5dB)
Analog
VDDA: This external power supply is used for the internal analog circuitry
including ADC, DAC, LINE inputs, MIC inputs, headphone outputs and refer-
ence voltages. VDDA supply ranges are shown in section 1.2. A decoupling
cap should be used on VDDA as shown in the typical connection diagram in
section 4.
VDDIO: This external power supply controls the digital I/O levels as well as the
output level of LINE outputs. VDDIO supply ranges are shown in section 1.2. A
decoupling cap should be used on VDDIO as shown in the typical connection
diagram in section 4.
Figure 10. System Block Diagram, signal flow and gain
Gain
(0 to
+12dB
AVC
please see Digital Audio Processing section.
ADC
Surround
Analog Gain
Switch
Audio
Bass Enhancement
DAC Volume
-90dB to 0dB
Control
+6dB
Digital Gain
DAC
Tone Control /GEQ/PEQ
+12dB
Headphone Volume Control
Line Out Volume Control
(CHIP_LINE_OUT_VOL)
(CHIP_ANA_HP_CTRL)
-52dB to +12dB
SGTL5000
LINEOUT
HP_OUT
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