Features: D/A Features
`Multi-bit Delta Sigma modulator
`105 dB Dynamic Range
-95 dB THD+N
`Up to 192 kHz Sampling Rates
`Single-ended Analog Architecture
`Volume Control with Soft Ramp
0.5 dB Step Size
Zero Crossing Click-free Transitions
`PopguardTM Technology
Minimizes the effects of output transients.
`Filtered Line-level Outputs
`Selectable Serial Audio Interface Formats
Left Justified up to 24-bit
I2S up to 24-bit
Right Justified 16, 18, 20 and 24-bit
`Selectable 50/15 s De-emphasis
A/D Features
`Multi-bit Delta Sigma Modulator
`105 dB Dynamic Range
`-95 dB THD+N
`Stereo 2:1 Input Multiplexer
`Programmable Gain Amplifier (PGA)
+/- 12 dB gain, 0.5 dB Step Size
Zero Crossing, Click-free Transitions
`Pseudo-differential Stereo Line Inputs
`Stereo Microphone Inputs
+32 dB Gain Stage
Low-noise Bias Supply
`Up to 192 kHz Sampling Rates
`Selectable Serial Audio Interface Formats
Left Justified up to 24-bit
I²S up to 24-bit
`High-pass Filter or DC Offset CalibrationPinout
Specifications
|
Parameter |
Symbol |
Min |
Typ |
Max |
Units |
| DC Power Supplies: |
Analog
Digital
Logic - Serial Port
Logic - Control Port |
VA
VD
VLS
VLC |
-0.3
-0.3
-0.3
-0.3 |
-
-
-
- |
+6.0
+6.0
+6.0
+6.0 |
V
V
V
V |
| Input Current |
(Note 2) |
Iin |
- |
- |
±10 |
mA |
| Analog Input Voltage |
VINA |
AGND-0.3 |
- |
VA+0.3 |
V |
| Digital Input Voltage |
Logic - Serial Port
Logic - Control Port |
VIND-S
VIND-C |
-0.3
-0.3 |
-
- |
VLS+0.3
VLC+0.3 |
V
V |
| Ambient Operating Temperature (Power Applied) |
TA |
-20 |
- |
+85 |
°C |
| Storage Temperature |
Tstg |
-65 |
- |
+150 |
°C |
| Resolution (bits) |
Dynamic Range (dB) |
THD+N (dB) |
Sample Rate (kHz) |
Analog I/O |
Power Supply (V) |
Type |
Package |
| 24 |
104?ADC;
104?DAC |
-95?ADC;
-90?DAC |
192 |
Single-ended |
VA?=?3.3?or 5;
VD?=?3.3?or 5;
VL?=?1.8?to?5 |
Stereo |
32 QFN |
DescriptionThe CS4265 is a highly integrated stereo audio CODEC. The CS4265 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 2:1 stereo input multiplexer CS4265 is included for selecting between line level or microphone level inputs. The microphone 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 or attenuation of ±12 dB in 0.5 dB steps.
The output of the PGA is followed by an advanced 5thorder, multi-bit delta sigma modulator and digital filtering/ 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 s de-emphasis is available for a 44.1 kHz sample rate for compatibility with digital audio programs mastered using the 50/15 s pre-emphasis technique.
Integrated level translators allow easy interfacing between the CS4265 and other devices operating over a wide range of logic levels.
The highly integrated CS4265 stereo CODEC with S/PDIF output provides premium audio performance and an innovative design that integrates five chips into one.
The CS4265 features an integrated analog front-end with 2:1 input mux. Also included is a programmable gain amplifier (PGA) capable of ±12 dB of analog gain in 0.5 dB step sizes with zero-crossing, click-free transitions to maintain superior audio quality. One pair of inputs has a dedicated microphone pre-amplifier in its path that provides 32 dB of gain, and a low-noise microphone bias supply is also available.
The stereo analog-to-digital (A/D) and digital-to-analog (D/A) conversion CS4265 is based on multibit Delta-Sigma architecture. Both the A/D converter and the D/A converter support 24-bit conversion and sample rates up to 192 kHz. High-quality single-ended inputs and outputs are also offered; the outputs feature Cirrus Logic's patented Popguard technology, which eliminates power-cycling clicks and pops - as a result, the number of external components needed is reduced.
The CS4265 operates from either a 3.3 V or 5 V power supply. It has 1.8 V to 5 V logic power supplies for the control and serial port, which allows a direct interface to external processors or microcontrollers without level shifting.
A synchronous S/PDIF (IEC60958-3) digital audio transmitter CS4265 is integrated to provide additional design flexibility and lower system cost.
The CS4265 delivers professional quality at a break-through price point for applications such as DVD recorders and receivers, digital video recorders/personal video recorders, digital TVs, set-top boxes, home media centers, automotive entertainment systems, notebook computers and PC sound cards.
CS4265 Data Sheet
