Gennum Corporation GA3201 Datasheet
V
B
OUT
V
REG
IN
GND
SDA
B
OUT
B
IN
C2
GA3201
C1
C5
C6
49k5
R3
R4
R6
R5
PGI
SLOW
AVERAGE
DETECTOR
FAST
AVERAGE
DETECTOR
CONTROL
10k
RECTIFIER
V
B
3k3
REGULATOR
48k
48k
11k
1M
2M
13k1
12k
1
X
- B
- A
- C
24dB/oct
BAND SPLIT
FILTER
High Frequency
Expander / Compressor
Low Frequency
Expander / Compressor
R
AGC_IN
R
H
R
L
R
LO
R
HI
4:1
1:1
C
SAD
MPO
R
TH
B
OUT
B
IN
R
FC
F
OUT
A
OUT
REC
OUT
C
FAD
V
BAT
V
REG
IN
GND
R1
R7
C4
C7
C3
69k5
100k
200k
200k
500k
200k
83n
0µ14
73n
81n
92n
73n
7n4
8n5
2:1
C8
R2
GP522
1
2
3
8
6
4
5
7
All resistors on ohms, all capacitors in farads, unless otherwise stated.
85k6
42k8
PRELIMINARY DATA SHEET
GA3201 Programmable
DynamEQ®II
FEATURES
• DynamEQ
®
II flexibility
• six programmable parameters
• 24dB/oct state variable filter
• twin average detectors
• handles high input levels
• drives class D integrated receivers
thinSTAX
™
PACKAGING
Hybrid typical dimensions:
0.200 x 0.115 x 0.066in.
(5.08 x 2.92 x 1.68mm)
DESCRIPTION
The GA3201 programmable hybrid is composed of a
DynamEQ
®
II Wide Dynamic Range Compression signal
processor and the GP522 controller memory chip. The
hybrid incorporates 24dB/oct filtering.
The gain and frequency response are dependent on the user’s
environment. The Twin Average Detector circuit is optimized
for sound quality during normal listening without sacrificing
comfort during sudden loud sounds.
The GA3201 features six programmable parameters:
independent compression ratio adjustment in the High and
Low frequency channels, VC adjustment, threshold
adjustment, crossover frequency adjustment and MPO
adjustment.
The output stage is designed as a preamplifier for the class D
integrated receiver.
BLOCK DIAGRAM
Revision Date: September 1999
GA3201
GENNUM CORPORATION P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3 tel. +1 (905) 632-2996
Web Site: www.gennum.com E-mail: hipinfo@gennum.com
Document No. 521 - 92 - 02
2
521 - 92 - 02
GA3201
ELECTRICAL CHARACTERISTICS
ABSOLUTE MAXIMUM RATINGS
PARAMETER VALUE
Supply Voltage 1.4 VDC
Power Dissipation 25 mW
Operating Temperature Range -10° C to 40° C
Storage Temperature Range -20° C to 70° C
PAD CONNECTION
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Hybrid Current I
AMP
- 395 580 µA
Minimum Voltage Vb 1.1 - - V
Total Harmonic Distortion THD V
IN
= -40dBV at 1kHz - 0.6 1.0 %
THD with Maximum Allowable Input THD
M
V
IN
= -23dBV, Rvc = 47kΩ - 2.0 10 %
Input Referred Noise IRN Aweighted filter - 3.0 - µV
RMS
Total System Gain A
V
V
IN
= -90dBV 44 47 50 dB
Regulator Voltage V
REG
I
LOAD
= 30µA 890 930 1000 mV
AGC
Lower Threshold TH
LO
-88.5 -84.5 -80.5 dBV
Upper Threshold TH
HI
-36 -32 -28 dBV
Compression Gain Range ∆A Gain(-90dBVIN) -Gain(-30dBVIN) 36.5 39.5 42.5 dB
System Gain in Compression A
60
V
IN
=-60dBV 26 29 32 dB
Min. Compression Ratio CMP
1 :1
VIN=3kHz, -60dBV to -40dBV,
R3 - Tap 15; R6 - Tap 15 0.9 1.0 1.1 Ratio
Max. Comp. Ratio CMP
4 :1
VIN =3kHz, -60dBV to -40dBV,
R3 - Tap 0; R6 - Tap 0 3.6 4.0 4.3 Ratio
Fast Average Detector Time Constant τ
FAST
- 7.4 - ms
Slow Average Detector Time Constant τ
SLOW
- 166 - ms
FILTER
Maximum Crossover Frequency ƒ
c_max
R1 - Tap 15 3.0 3.9 - kHz
Nominal Crossover Frequency ƒ
c_nom
R1 - Tap 8 1.5 1.9 2.3 kHz
Minimum Crossover Frequency ƒ
c_min
R1 - Tap 0 - 0.9 1.4 kHz
Filter Rolloff Rate - 24 - dB/oct
Conditions: Supply Voltage VB = 1.3 V, Frequency = 1 kHz, Temperature = 25°C.
The programmable parameters are adjusted to the following set values unless otherwise specified.
(MPO) R5 - Tap15; (TH) R2 - Tap 0; (FC) R1 - Tap 8; (HP) R6 - Tap 0; (LP) R3 - Tap 0; (VC) R4 - Tap 0, R7 - Tap 0.
SDA B
IN
B
OUT
V
BAT
OUT
V
REG
IN GND GND
8 7 6 5 4
1 2 3 3
CAUTION
ELECTROSTATIC
SENSITIVE DEVICES
DO NOT OPEN PACKAGES OR HANDLE
EXCEPT AT A STATIC-FREE WORKSTATION
3
521 - 92 - 02
GA3201
50k
SDA
2µ2
3k9
R
VC
V
B
116k
C2
GA3201
C1
C5
C6
49k5
R3
R4
R6
R5
PGI
SLOW
AVERAGE
DETECTOR
FAST
AVERAGE
DETECTOR
CONTROL
10k
RECTIFIER
V
B
3k3
REGULATOR
48k
48k
11k
1M
2M
13k1
12k
1
X
- B
- A
- C
24 dB / Oct
BAND SPLIT
FILTER
High Frequency
Expander / Compressor
Low Frequency
Expander / Compressor
R
AGC_IN
R
H
R
L
R
LO
R
HI
4:1
1:1
C
SAD
MPO
R
TH
B
OUT
B
IN
R
FC
F
OUT
A
OUT
REC
OUT
C
FAD
V
BAT
V
REG
IN
GND
R1
R7
C4
C7
C3
69k5
100k
200k
200k
500k
200k
2:1
C8
R2
GP522
1
2
3
8
7
6
4
5
0µ14
92n
83n
73n
81n
73n
7n4
8n5
All resistors in ohms, all capacitors in farads, unless otherwise stated.
85k6
42k8
Fig. 1 Test Circuit
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
STAGE A and B ---
Open Loop Gain (B) A
OL_B
-52-dB
Input Impedance (A) R
IN
8.0 10.6 12 kΩ
OUTPUT STAGE
Stage Gain A
C
VIN=-30dBV 7.0 9.0 11 dB
Max Output Level MPO VIN=-25dBV, R
VCEXT
=221k -20 -18 -16 dBV
MPO Range ∆MPO R5 - Tap 15 to Tap 0, R
VCEXT
=221k 11.6 13.6 15.6 dB
Output Resistance R
OUT
-24-kΩ
ELECTRICAL CHARACTERISTICS continued
Conditions: Supply Voltage VB = 1.3V, Frequency = 1kHz, Temperature = 25°C
The programmable parameters are adjusted to the following set values unless otherwise specified.
(MPO) R5 - Tap 15; (TH) R2 - Tap 0; (FC) R1 - Tap 8; (HP) R6 - Tap 0; (LP) R3 - Tap 0; (VC) R4 - Tap 0, R7 - Tap 0.
All conditions and parameters remain as shown in the Test Circuit unless otherwise specified in the CONDITIONS column.
Loading...