ISD9300 Datasheet, PDF (21/26 Pages) List of Unclassifed Manufacturers – ISD Cortex-M0 ChipCorder

ISD9300 Datasheet
6.4 Analog Characteristics
6.4.1 Specification of ADC and Speaker Driver
Conditions: VCCD = 3.3V, VCCA = 3.3V, TA = 25C, 1kHz signal, fs = 16kHz, 16-bit audio data, unless otherwise
stated.
Parameter
Symbol
Comments/Condition
s
Min
Typ
Max Units
Analog to Digital Converter (ADC)
Full scale input signal ¹
VINFS
Signal-to-noise ratio
Total harmonic distortion ²
SNR
THD+N
PWM Speaker Output (8Ω bridge-tied-load)
Full scale output ⁴
Total harmonic distortion ²
THD+N
Signal-to-noise ratio
SNR
PGABST = 0dB
PGAGAIN = 0dB
Gain = 0dB, A-weighted
Input = -3dB FS input
Po= 200mW,
VDDSPK=3.3V
Po= 320mW,
VDDSPK = 3.3V
Po= 860mW,
VDDSPK = 5V
Po= 1000mW,
VDDSPK = 5V
VDDSPK = 3.3V
1.0
0
90
0.04
VCCSPK / 3.3
*63
-64
-60
-36
90
Vrms
dBV
dB
%
Vrms
dB
dB
dB
dB
dB
VDDSPK=5V
89
dB
Power supply rejection ratio
(50Hz – 22kHz)
PSRR
VDDSPK = 3.3V
VDDSPK = 5V
TBD
dB
TBD
dB
6.4.2 Specification of PGA and BOOST
Conditions: VCCD = 3.3V, VCCA = 3.3V, TA = 25C, 1kHz signal, fs = 16kHz, 16-bit audio data, unless otherwise
stated.
Parameter
Symbol
Comments/Condition
s
Min
Typ
Max Units
Microphone Inputs (MICP, MICN) and Programmable Gain Amplifier (PGA)
Full scale input signal ¹
PGABST = 0dB
1.0
PGAGAIN = 0dB
0
Vrms
dBV
Programmable gain
-12
35.25
dB
Programmable gain step size
Guaranteed Monotonic
0.75
dB
Mute Attenuation
120
dB
Input resistance
Inverting Input
PGA Gain = 35.25dB
1.6
kΩ
PGA Gain = 0dB
47
kΩ
PGA Gain = -12dB
75
kΩ
Non-inverting Input
94
kΩ
Input capacitance
10
pF
PGA equivalent input noise
0 to 20kHz, Gain set to
120
µV
35.25dB
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Release Date: Oct 23, 2014
Revision V1.1