ADAU1977WBCPZ - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

ADAU1977WBCPZ
Manufacturer

ADI
ChipWorker Part#

CW597993
Category

Analog to Digital, ADC IC
Package

LFCSP-40
Description

ANALOG DEVICES ADAU1977WBCPZ Analog to Digital Converter, 24Bit, 192KSPS, Single, 3V, 3.6V, LFCSP
Documentation

Datasheet

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ADAU1977WBCPZ Specifications

Attribute	Attribute Value

Part Number	ADAU1977WBCPZ
Manufacturer	ADI
ChipWorker Part#	CW597993
Category	Analog to Digital, ADC IC
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	40 Pin
Case/Package	LFCSP-40
Supply Voltage (DC)	3.00V (min)
Supply Current	1.75 mA
Number of Circuits	4 Circuit
Number of Channels	4 Channel
Number of Positions	40 Position
Number of Bits	24 Bit
Power Dissipation	265 mW
Sample Rate	192 ksps
Resolution (Bits)	24.0 Bit
Number of ADCs	4 ADC
Operating Temperature (Max)	105 ℃
Operating Temperature (Min)	-40 ℃
Number of Input Channels	4 Channel
Supply Voltage	3.3 V
Supply Voltage (Max)	3.6 V
Supply Voltage (Min)	3 V
Input Voltage	10 V
	expand all
Size-Length	6.1 mm
Size-Width	6.1 mm
Size-Height	0.75 mm
Operating Temperature	-40℃ ~ 105℃
Product Lifecycle Status	Active
Packaging	Tray
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2015/12/17

Product Description

Product Details
The ADAU1977 incorporates four high performance analog-todigital converters (ADCs) with direct-coupled inputs capable of 10 V rms. The ADC uses multibit sigma-delta (Σ-Δ) architecture with continuous time front end for low EMI. The ADCs can be connected to the electret microphone (ECM) directly and provide the bias for powering the microphone. Built-in diagnostic circuitry detects faults on input lines and includes comprehensive diagnostics for faults on microphone inputs. The faults reported are short to battery, short to microphone bias, short to ground, short between positive and negative input pins, and open input terminals. In addition, each diagnostic fault is available as an IRQ flag for ease in system design. An I2C/SPI control port is also included. The ADAU1977 uses only a single 3.3 V supply. The part internally generates the microphone bias voltage. The microphone bias is programmable in a few steps from 5 V to 9 V. The low power architecture reduces the power consumption. An on-chip PLL can derive the master clock from an external clock input or frame clock (sample rate clock). When fed with a frame clock, the PLL eliminates the need for a separate high frequency master clock in the system. The ADAU1977 is available in a 40-lead LFCSP package.*APPLICATIONS**
Automotive audio systems
Active Noise Cancellation System
### Features and Benefits
Programmable microphone bias (5 V to 9 V) with diagnostics
Four 10 V rms capable direct-coupled differential inputs
On-chip PLL for master clock
Low EMI design
106 dB ADC dynamic range
−95 dB THD + N
Selectable digital high-pass filter
24-bit ADC with 8 kHz to 192 kHz sample rates
See data sheet for additional features

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