Datasheet
Table Of Contents
- FEATURES
- APPLICATIONS
- GENERAL DESCRIPTION
- TABLE OF CONTENTS
- REVISION HISTORY
- FUNCTIONAL BLOCK DIAGRAM
- SPECIFICATIONS
- ABSOLUTE MAXIMUM RATINGS
- PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
- TYPICAL PERFORMANCE CHARACTERISTICS
- SYSTEM BLOCK DIAGRAM
- THEORY OF OPERATION
- INITIALIZATION
- AUDIO ADCs
- AUDIO DACs
- CONTROL PORTS
- SIGNAL PROCESSING
- RAMS AND REGISTERS
- CONTROL REGISTER MAP
- CONTROL REGISTER DETAILS
- 2048 TO 2055 (0x0800 TO 0x0807)—INTERFACE REGISTERS
- 2056 (0x0808)—GPIO PIN SETTING REGISTER
- 2057 TO 2060 (0x0809 TO 0x080C)—AUXILIARY ADC DATA REGISTERS
- 2064 TO 2068 (0x0810 TO 0x0814)—SAFELOAD DATA REGISTERS
- 2069 TO 2073 (0x0815 TO 0x819)—SAFELOAD ADDRESS REGISTERS
- 2074 TO 2075 (0x081A TO 0x081B)—DATA CAPTURE REGISTERS
- 2076 (0x081C)—DSP CORE CONTROL REGISTER
- 2078 (0x081E)—SERIAL OUTPUT CONTROL REGISTER
- 2079 (0x081F)—SERIAL INPUT CONTROL REGISTER
- 2080 TO 2081 (0x0820 TO 0x0821)—MULTIPURPOSE PIN CONFIGURATION REGISTERS
- 2082 (0x0822)—AUXILIARY ADC AND POWER CONTROL
- 2084 (0x0824)—AUXILIARY ADC ENABLE
- 2086 (0x0826)—OSCILLATOR POWER-DOWN
- 2087 (0x0827)—DAC SETUP
- MULTIPURPOSE PINS
- LAYOUT RECOMMENDATIONS
- TYPICAL APPLICATION SCHEMATICS
- OUTLINE DIMENSIONS
Data Sheet ADAU1701
Rev. C | Page 5 of 52
SPECIFICATIONS
AVDD = 3.3 V, DVDD = 1.8 V, PVDD = 3.3 V, IOVDD = 3.3 V, master clock input = 12.288 MHz, unless otherwise noted.
ANALOG PERFORMANCE
Specifications are guaranteed at 25°C (ambient).
Table 1.
Parameter Min Typ Max Unit Test Conditions/Comments
ADC INPUTS
Number of Channels 2 Stereo input
Resolution 24 Bits
Full-Scale Input 100 (283) µA rms (µA p-p) 2 V rms input with 20 kΩ (18 kΩ external + 2 kΩ
internal) series resistor
Signal-to-Noise Ratio
A-Weighted 100 dB
Dynamic Range −60 dB with respect to full-scale analog input
A-Weighted 95 100 dB
Total Harmonic Distortion + Noise −83 dB −3 dB with respect to full-scale analog input
Interchannel Gain Mismatch 25 250 mdB
Crosstalk −82 dB Analog channel-to-channel crosstalk
DC Bias 1.4 1.5 1.6 V
Gain Error −11 +11 %
DAC OUTPUTS
Number of Channels 4 Two stereo output channels
Resolution
24
Bits
Full-Scale Analog Output 0.9 (2.5) V rms (V p-p)
Signal-to-Noise Ratio
A-Weighted 104 dB
Dynamic Range −60 dB with respect to full-scale analog output
A-Weighted 99 104 dB
Total Harmonic Distortion + Noise −90 dB −1 dB with respect to full-scale analog output
Crosstalk −100 dB Analog channel-to-channel crosstalk
Interchannel Gain Mismatch 25 250 mdB
Gain Error −10 +10 %
DC Bias 1.4 1.5 1.6 V
VOLTAGE REFERENCE
Absolute Voltage (CM) 1.4 1.5 1.6 V
AUXILIARY ADC
Full-Scale Analog Input 2.8 3.0 3.1 V
INL 0.5 LSB
DNL 1.0 LSB
Offset 15 mV
Input Impedance 17.8 30 42 kΩ










