THAT 4301 Dynamics Processor IC
Page 3
SPECIFICATIONS1,2 (Cont’d.)
VCA Electrical Characteristics3 (Cont’d.)
4301
Typ Max
4301A
Typ Max
Parameter
Symbol
Conditions
Min
Min
Units
Total Harmonic Distortion (cont’d.) THD
V
IN = +10 dBV, 1 kHz
0 dB gain
—
—
0.03 0.07
0.035 0.09
—
—
0.03 0.07
0.035 0.09
%
%
–15 dB gain
V
OUT= +10 dBV, 1 kHz
+15 dB gain
—
0.035 0.09
—
0.035 0.09
0.05 0.09
%
V
IN = +19.5 dBV, 1 kHz
0 dB gain
—
—
0
—
—
%
Symmetry Control Voltage
VSYM
minimum THD
-2.5
+2.5
-2.5
0
+2.5
mV
RMS Detector Electrical Characteristics4
Parameter
Symbol
IB (RMS)
Conditions
No Signal
Min
—
Typ
30
Max
400
Units
pA
Input Bias Current
Input Offset Voltage
VOFF(RMS In)
IIN(RMS)
No Signal
—
—
6
±4
175
8.5
±15
750
12
mV
mA
mA
Input Signal Current
Input Current for 0 V Output
Output Scale Factor
Iin0
IT= 7.5mA
E
O / 20log(Iin/Iin0
)
31.6nA< IIN< 1mA
TA= 25°C (TCHIP »55°C)
6.4
6.5
1
6.6
mV/dB
Scale Factor Match (RMS to VCA)
Output Linearity
-20 dB < VCA Gain < +20 dB
1mA<Iin (DET)<100mA
.985
1.015
fIN= 1kHz
1mA < Iin< 100mA
100nA < Iin< 316mA
31.6nA < Iin< 1mA
—
—
—
0.1
0.5
1.5
—
—
—
dB
dB
dB
Rectifier Balance
Crest Factor
f
IN = 100 Hz, t = .001 s
1mA< Iin < 100mA
–20
—
20
%
1ms pulse repetition rate
0.2 dB error
0.5 dB error
1.0 dB error
Iin ³ 10mA
—
—
3.5
5
—
—
—
10
—
Maximum Frequency for 2 dB Additional Error
—
100
45
—
kHz
kHz
kHz
mA
Iin ³ 3mA
—
—
Iin ³ 300nA
—
7
—
Timing Current Set Range
Voltage at IT Pin
IT
1.5
-10
0.90
7.5
15
IT = 7.5mA
IT = 7.5mA
+20
1.1
+50
1.30
mV
Timing Current Accuracy
Filtering Time Constant
ICT/IT
(0.026)C
s
T
t
TCHIP = 55°C
I
T
Output Temp. Coefficient
Output Current
DEo / DTCHIP
Re: TCHIP = 27°C
—
0.33
—
—
%/°C
IOUT
–300mV < VOUT< +300mV
±90
±100
mA
4. Except as noted, test circuit is the RMS-Detector section only from Figure 2.
THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA
Tel: +1 (508) 478-9200; Fax: +1 (508) 478-0990; Web: www.thatcorp.com
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