General Description
The CS5581 is a single-channel, 16-bit analog-to-digital converter capable of 200 kSps conversion rate. The input accepts a single-ended analog input signal. On-chip buffers provide high input impedance for both the AIN input and the VREF+ input. This significantly reduces the drive requirements of signal sources and reduces errors due to source impedances. The CS5581 is a delta-sigma converter capable of switching multiple input channels at a high rate with no loss in throughput. The ADC uses a low-latency digital filter architecture. The filter is designed for fast settling and settles to full accuracy in one conversion. The converter's 16-bit data output is in serial format, with the serial port acting as either a master or a slave. The converter is designed to support bipolar, ground-referenced signals when operated from ±2.5V analog supplies.
The CS5581 uses self-calibration to achieve low offset and gain errors. The converter achieves a S/N of 81 dB. Linearity is 0.0007% of full scale.
The converter can operate from an analog supply of 0-5V or from ±2.5V. The digital interface supports standard logic operating from 1.8, 2.5, or 3.3 V.

Features & Description
*Single-ended Analog Input
*On-chip Buffers for High Input Impedance
*Conversion Time = 5 μS
*Settles in One Conversion
*Linearity Error = 0.0007%
*Signal-to-Noise = 81 dB
*S/(N + D) = 81 dB
*DNL = ±0.1 LSB Max.
*Self-calibration:
- Maintains accuracy over time & temperature.
*Simple three/four-wire serial interface
*Power Supply Configurations:
- Analog: +5V/GND; IO: +1.8V to +3.3V
- Analog: ±2.5V; IO: +1.8V to +3.3V
*Power Consumption:
- ADC Input Buffers On: 85 mW
- ADC Input Buffers Off: 60 mW

CS5581-ISZ  

CS5581 - ±2.5 V / 5 V, 200 kSps, 16-bit, High-throughput ΔΣ ADC

GENERAL DESCRIPTION
The CS42L51 is a highly integrated, 24-bit, 96 kHz, low power stereo CODEC. Based on multi-bit, delta-sigma modulation, it allows infinite sample rate adjustment between 4 kHz and 96 kHz. Both the ADC and DAC offer many features suitable for low power, portable system applications.
The ADC input path allows independent channel control of a number of features. An input multiplexer selects between line-level or microphone level inputs for each channel. The microphone input path includes a selectable programmable-gain pre-amplifier stage and a low noise MIC bias voltage supply. A PGA is available for line or microphone inputs and provides analog gain with soft ramp and zero cross transitions. The ADC also features a digital volume attenuator with soft ramp transitions. A programmable ALC and Noise Gate monitor the input signals and adjust the volume levels appropriately.
The DAC output path includes a digital signal processing engine. Tone Control provides bass and treble adjustment of four selectable corner frequencies. The Mixer allows independent volume control for both the ADC mix and the PCM mix, as well as a master digital volume control for the analog output. All volume level changes may be configured to occur on soft ramp and zero cross transitions. The DAC also includes de-emphasis, limiting functions and a beep generator delivering tones selectable across a range of two full octaves.
The stereo headphone amplifier is powered from a separate positive supply and the integrated charge pump provides a negative supply. This allows a ground-centered analog output with a wide signal swing and eliminates external DC-blocking capacitors.
In addition to its many features, the CS42L51 operates from a low-voltage analog and digital core, making this CODEC ideal for portable systems that require extremely low power consumption in a minimal amount of space.
The CS42L51 is available in a 32-pin QFN package in both Commercial (-10 to +70° C) and Automotive grades (-40 to +85° C). The CDB42L51 Customer Demonstration board is also available for device evaluation and implementation suggestions. Please see “Ordering Information” on page 85 for complete details.

FEATURES
*24-bit Converters
*4 kHz to 96 kHz Sample Rate
*Multi-bit Delta Sigma Architecture
*Low Power Operation
– Stereo Playback: 12.93 mW @ 1.8 V
– Stereo Record and Playback: 20.18 mW @ 1.8 V
*Variable Power Supplies
– 1.8 V to 2.5 V Digital & Analog
– 1.8 V to 3.3 V Interface Logic
*Power Down Management
– ADC, DAC, CODEC, MIC Pre-Amplifier, PGA
*Software Mode (I²C® & SPI™ Control)
*Hardware Mode (Stand-Alone Control)
*Digital Routing/Mixes:
– Analog Out = ADC + Digital In
– Digital Out = ADC + Digital In
– Internal Digital Loopback
– Mono Mixes
*Flexible Clocking Options
– Master or Slave Operation
– High-Impedance Digital Output Option (for easy MUXing between CODEC and Other Data Sources)
– Quarter-Speed Mode - (i.e. Allows 8 kHz Fs while maintaining a flat noise floor up to 16 kHz)

APPLICATIONS
*HDD & Flash-Based Portable Audio Players
*MD Players/Recorders
*PDAs
*Personal Media Players
*Portable Game Consoles
*Digital Voice Recorders
*Digital Camcorders
*Digital Cameras
*Smart Phones

CS42L51-CNZ, CS42L51-CNZR, CS42L51-DNZ, CS42L51-DNZR

 

CS42L51 - Low Power, Stereo CODEC with Headphone Amp

Description
The CS5466 is a low cost power meter solution combining two ΔΣ Analog-to-Digital Converters (ADC)’s, an energy-to-frequency converter, and energy pulse outputs on a single chip. It is designed to accurately measure and calculate energy for single phase 2- or 3- wire power metering applications with minimal external components.
Low frequency energy outputs, E1 and E2, supply average real power and can be used to drive a stepper motor or a mechanical counter; the high frequency energy output FOUT can be used for calibration; and NEG indicates negative power.
The CS5466 has configuration pins which allow for direct configuration of pulse output frequency, current channel input range, and high pass filter enable option. The CS5466 also has a power-on reset function which holds the part in reset until the supply reaches an operable level.

Features
*Single Chip; Power Measurement Solution
*Energy Data Linearity: ±0.1% of Reading over 1000:1 Dynamic Range
*On-Chip functions: Measures Energy and Performs Energy-to-Pulse Conversions
*Meets Accuracy Spec for IEC 687/1036
*High Pass Filter Option
*Four Input Ranges for Current Channel
*On-Chip 2.5 V Reference (25 ppm/°C typ)
*Pulse Outputs for Stepper Motor or Mechanical Counter
*On-Chip Energy Direction Indicator
*Ground Referenced Input Signals with Single Supply
*High Frequency Output for Calibration
*On-Chip Power-on Reset
*Power Supply Configurations: VA+ = +5 V; AGND = 0 V; VD+ = +3.3 V to 5 V

CS5466-ISZ  

CS5466 - Low Cost Power/Energy IC with Pulse Output

General Description
The CS5361 is a complete analog-to-digital converter for digital audio systems.
It performs sampling, analog-todigital conversion and anti-alias filtering, generating 24-bit values for both left and right inputs in serial form at sample rates up to 192 kHz per channel.
The CS5361 uses a 5th-order, multi-bit delta-sigma modulator followed by digital filtering and decimation, which removes the need for an external anti-alias filter.
The ADC uses a differential architecture which provides excellent noise rejection.
The CS5361 is ideal for audio systems requiring wide dynamic range, negligible distortion and low noise, such as A/V receivers, DVD-R, CD-R, digital mixing consoles, and effects processors.

Features
*Advanced Multi-bit Delta-Sigma Architecture
*24-Bit Conversion
*114 dB Dynamic Range
*-105 dB THD+N
*System Sampling Rates up to 192 kHz
*Less than 150 mW Power Consumption
* High Pass Filter or DC Offset Calibration
*Supports Logic Levels Between 5 and 2.5V
*Differential Analog Architecture
* Linear Phase Digital Anti-Alias Filtering
*Overflow DetectionFeatures

CS5361-KS
CS5361-BS
CS5361-KZ  

CS5361-114 dB, 192 kHz, Multi-Bit Audio A/D Converter

Description
The CS5542 / CS5543 chip set is designed to be a complete current measurement data acquisition system.
The CS5542 is a 22-Bit, 2-channel, 5th-order delta sigma modulator.
The CS5543 is a monolithic CMOS, 8-channel digital FIR filter designed to be used with up to
four CS5542’s forming an 8-channel system.
The complete system is capable of cascading up to 1024 channels.
The system supports 22-bit measurement resolution with output conversion rates up to 1 kHz per channel.
JTAG boundary-scan capability is available to facilitate self-test at the system level.
Potential applications for the CS5542/CS5543 system are environmental monitoring, process control systems, color sensing, light measurement, chemical analyzers and photo-diode transducer applications.

Features
* lDelta-Sigma Architecture:
- 5th Order Modulator
- 22-Bit Resolution
* dc Accuracy (fBW = 250Hz):
- Integral Linearity: ±0.001 % F.S.
- Differential Linearity: ±0.5 LSBs
- RMS Noise: 1.1 pARMS
* Pin Selectable Input Range:
- ±400 nA to ±2.5 μA Full Scale
* 8-Channel Digital FIR Filter
* Self-calibration of Offset and Gain
* Low Power: 50 mW /ch for 8-ch system

CS5542-KL
CS5543-KL  

CS5542 - 22-Bit, Multi-Channel DS ADC Chip Set