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GA3227 Datasheet(PDF) 5 Page - ON Semiconductor

Part # GA3227
Description  Pre-configured DSP System
Download  13 Pages
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

GA3227 Datasheet(HTML) 5 Page - ON Semiconductor

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CONSOLIDATOR GA3227
www.onsemi.com
5
Table 3. ELECTRICAL CHARACTERISTICS − PART 2
Parameter
Accuracy
Units
Max
Min
WIDEBAND SYSTEM GAIN
Wideband System Gain
−36
12
dB
Type 3
Wideband Attack Time Constant (Fast & Slow)
0.25
8192
ms
Type 1, 3
Wideband Release Time Constant (Fast & Slow)
0.25
8192
ms
Type 1, 3
External VC
−48
0
dB
Type 3
Internal VC Attenuator
−48
0
dB
Type 3
TOTAL SYSTEM GAIN
Total System Gain
−19
83
dB
(Note 1)
AGCo
AGCo Output Limiting
−30
−1
dBFS*
Type 3
AGCo Compression Ratio
∞ : 1
∞ : 1
Ratio
N/A
PEAK CLIPPER
PC Output Limiting
−40
0
dBFS
Type 3
TONE GENERATOR
Pure Tone Frequency
(memory and low battery indicator)
0.25
12
kHz
Type 1, 2
Pure Tone Amplitude
(memory and low battery indicator)
−50
0
dBFS
Type 3
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
1. Total System Gain consists of: Wideband System Gain + High and Low Independent Channel Gains + Converter Gain and accuracy of this
parameter is dependent on accuracy of the components.
*Peak output is defined as largest sine wave possible at the resonant frequency of the receiver.
NOTE: Type 1: Accuracy is determined by the clock frequency deviation
Type 2: Accuracy is determined by the quantization error of 16 bit coefficient and 20 bit or higher data word
Type 3: Accuracy is determined by the quantization error of a parameter word (see Table 2 for word length) and 20 bit or higher data
word
TYPICAL APPLICATIONS
Figure 2. Test Circuit
Note: All resistors in ohms and all capacitors in farads, unless otherwise stated.
MGND
IN
T
VREG
SDA
MS
MS2
TR4
TR3
TR2
TR1
VC
VREG2
3k9
1k
LP FILTER
OUT
VB
A/D
SQUELCH
SQUELCH
HP
LP
TRIMMER INTERFACE
FILTER
COMPRESSOR
COMPRESSOR
PROGRAMMING
INTERFACE
EEPROM
REGULATOR
TWIN DETECTOR
D/A
HBRIDGE
GA3227
VC GAIN
AGC−O
TWIN DETECTOR
T−coil EQ
1st or 2nd
ORDER
1st to 3rd
ORDER
LC
HC
TWIN DETECTOR
TWIN DETECTOR
S
19
12
11
10
18
20
2
16
15
17
6
9
8
7
5
14
13
3
4
BAND SPLIT
24 db/oct
TONE
GENERATOR
PEAK
CLIPPING
Bi−Quadratic
Filter
1


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