CS4245-CQZ Cirrus Logic Inc, CS4245-CQZ Datasheet - Page 2

• Manufacturer Part Number: CS4245-CQZ
• Description: IC CODEC AUD STER 104DB 48LQFP
• Manufacturer: Cirrus Logic Inc
• Type: Stereo Audior

Specifications of CS4245-CQZ

• Package / Case: 48-LQFP
• Data Interface: Serial
• Resolution (bits): 24 b
• Number Of Adcs / Dacs: 2 / 2
• Sigma Delta: Yes
• Dynamic Range, Adcs / Dacs (db) Typ: 104 / 104
• Voltage - Supply, Analog: 3.13 V ~ 5.25 V
• Voltage - Supply, Digital: 3.13 V ~ 5.25 V
• Operating Temperature: -10°C ~ 70°C
• Mounting Type: Surface Mount
• Number Of Adc Inputs: 12
• Number Of Dac Outputs: 4
• Conversion Rate: 192 KSPS
• Interface Type: Serial (I2C, SPI)
• Resolution: 24 bit
• Operating Supply Voltage: 3.3 V, 5 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 10 C
• Number Of Channels: 2 ADC/2 DAC
• Thd Plus Noise: - 95 dB ADC / - 90 dB DAC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 598-1501 - BOARD EVAL FOR CS4245 CODEC
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 598-1034

2
System Features
Direct Interface with 1.8 V to 5 V Logic Levels
Optional Asynchronous Serial Port Operation
Selectable Auxiliary Analog Output
Internal Digital Loopback
Power-Down Mode
+3.3 V to +5 V Analog Power Supply
+3.3 V to +5 V Digital Power Supply
Supports I²C
Interfaces
Pin-Compatible with CS5345
–
–
–
Each Serial Port Supports Master or Slave
Operation
Allows Analog Monitoring of Either the ADC
Input Signal after PGA or DAC Output
Signal
Available for A/D, D/A, CODEC, Mic
Preamplifier
®
and SPI
TM
Control Port
General Description
The CS4245 is a highly integrated stereo audio
CODEC. The CS4245 performs stereo analog-to-digital
(A/D) and digital-to-analog (D/A) conversion of up to
24-bit serial values at sample rates up to 192 kHz.
A 6:1 stereo input multiplexer is included for selecting
between line-level or microphone-level inputs. The mi-
crophone input path includes a +32 dB gain stage and
a low-noise bias voltage supply. The PGA is available
for line or microphone inputs and provides gain/attenu-
ation of ±12 dB in 0.5 dB steps.
The output of the PGA is followed by an advanced 5th-
order, multi-bit delta sigma modulator and digital filter-
ing/decimation. Sampled data is transmitted by the
serial audio interface at rates from 4 kHz to 192 kHz in
either Slave or Master Mode.
The D/A converter is based on a 4th-order multi-bit delta
sigma modulator with an ultra-linear low-pass filter and
offers a volume control that operates with a 0.5 dB step
size. It incorporates selectable soft ramp and zero
crossing transition functions to eliminate clicks and
pops.
Standard 50/15 μs de-emphasis is available for a
44.1 kHz sample rate for compatibility with digital audio
programs mastered using the 50/15 μs pre-emphasis
technique.
Integrated level translators allow easy interfacing be-
tween the CS4245 and other devices operating over a
wide range of logic levels.
The CS4245 is available in a 48-pin LQFP package in
both Commercial (-10° to +70° C) and Automotive (-40°
to +105° C) grade. The CDB4245 Customer Demon-
stration board is also available for device evaluation and
implementation suggestions. Please see
formation” on page 57
for complete details.
“Ordering In-
CS4245
DS656F2