User's Manual
Table Of Contents
- 1 Ordering Information
- 2 Block Diagram and Descriptions
- 3 Electrical Characteristics
- 4 WT32 Pin Description
- 5 Power Control
- 6 Serial Interfaces
- 7 Audio Interfaces
- 8 I/O Parallel Ports
- 9 Software Stacks
- 10 Enhanced Data Rate
- 11 Layout and Soldering Considerations
- 12 WT32 Physical Dimensions
- 13 Package
- 15 RoHS Statement with a List of Banned Materials
- 16 Contact Information
8
Stereo CODEC Analogue to Digital Converter
Parameter Conditions Min Typ Max Unit
Resolution - - 16 Bits
Input Sample Rate,
F
sample
8 - 44.1 kHz
Signal to Noise
Ratio, SNR
fin = 1kHz
B/W = 20Hz→20kHz
A-Weighted
THD+N < 1%
150mVpk-pk input
F
sample
8 kHz - 82 - dB
11.025 kHz - 81 - dB
16 kHz - 80 - dB
22.050 kHz - 79 - dB
32 kHz - 79 - dB
44.1 kHz - 78 - dB
Digital Gain Digital Gain Resolution = 1/32dB -24 - 21.5 dB
Analogue Gain Analogue Gain Resolution = 3dB -3 - 42 dB
Input full scale at maximum gain (differential) - 4 - mV rms
Input full scale at minimum gain (differential) - 800 - mV rms
3dB Bandwidth - 20 - kHz
Microphone mode input impedance - 6.0 - kΩ
THD+N (microphone input) @ 30mV rms input - 0.04 - %
Ta ble 5 : St er eo CODEC ADC charact erist ics
Stereo CODEC Digital to Analog Converter
Parameter Conditions Min Typ Max Unit
Resolution - - 16 Bits
Input Sample
Rate, F
sample
8 - 48 kHz
Signal to Noise
Ratio, SNR
fin = 1kHz
B/W = 20Hz→20kHz
A-Weighted
THD+N < 1%
150mVpk-pk input
F
sample
8 kHz - 95 - dB
11.025 kHz - 95 - dB
16 kHz - 95 - dB
22.050 kHz - 95 - dB
32 kHz - 95 - dB
44.1 kHz - 95 - dB
Digital Gain Digital Gain Resolution = 1/32dB -24 - 21.5 dB
Analogue Gain Analogue Gain Resolution = 3dB 0 - -21 dB
Output voltage full scale swing (differential) - 750 - mV rms
Allowed Load
Resistive 16(8) - OC Ω
Capacitive - - 500 pF
THD+N 100kΩ load - - 0.01 %
THD+N 16Ω load - - 0.1 %
SNR (Load = 16Ω, 0dBFS input relative to digital silence) - 95 - dB
Ta ble 6 : St ereo CODEC DAC charact erist ics