ST-VCA2 RADIO DESIGN LABS, ST-VCA2 Datasheet - Page 2

• Manufacturer Part Number: ST-VCA2
• Description: RDL VOLTAGE CONTROLLED AMPLIFIER, POWER REQUIREMENTS: 24-33 VDC, 70 MA, GROUND REFERENCED, APPLICATIONS: USE IN APPLICATION REQUIRING SMOOTH LEVEL CONTROL FROM A REMOTE CONTROL PANEL, POTENTIOMETER
• Manufacturer: RADIO DESIGN LABS

STICK-ON
Model ST-VCA2
Voltage Controlled Amplifier
TYPICAL PERFORMANCE
Inputs (2):
Line:
Input Levels:
Line:
Output Impedance:
Output Signal (normal rated):
Headroom:
THD+N:
Frequency Response:
Noise:
CMRR:
Maximum Attenuation:
Supply Input:
891-1070C
REM OTE PANEL
PUT
E
LINEAR TAPER
USE RDL'S
RLC10K
OR
10K
M IC
BALANCED
C
T
R
L
SOURCE
SIGNAL
10V
FROM
O
U
T
OR
PW R IN
LINE
CONNECTING EXTERNAL
CONTROL TO TW O ST-VCAs
(TW O ZONE CONTROL
NOT FO R STEREO)
EQUIPM ENT
E
V
E
L
L
BALANCED
FEEDING
SIGNAL
LINE
®
PUT
E
CONTROL
SERIES
Europe [NH Amsterdam] (++31) 20-6238 983; Fax: (++31) 20-6225-287
POW ER /
C
T
R
L
U.S.A. [phone], [phone]; Fax: [phone]
Mic: 200 Ω balanced; 5 kΩ unbalanced
10 kΩ balanced bridging or unbalanced
(for +4 dBu output; 150 Ω source)
(for normal output level: +4 dBu)
150 Ω
18 dB
Mic: < 0.025%
Line: <0.01% (unity gain);
0.035% typical at 15 dB attenuation
Line: 10 Hz to 20 kHz (+/- 0.25 dB)
(150 Ω source; 50 dB gain)
Line: <-90 dB below +4 dBu output
Mic: > 60 dB (50 Hz to 120 Hz)
Line: > 40 dB (50 Hz to 120 Hz)
> 100 dB (0 Vdc control voltage)
24 to 33 Vdc @ 70 mA, Ground-referenced
10V
Mic: -40 to -60 dBu
-15 dBu (-17 dBV) to +4 dBu
+4 dBu
Mic: 50 Hz to 30 kHz (+/- 1 dB)
Mic: < -72 dB below +4 dBu output
O
U
T
PW R IN
Radio Design Labs Technical Support Centers
E
V
E
L
L
CONDENSER M ICS
RDL ST-M PA2 FOR
NOT PROTECTED
FROM PHANTOM
VOLTAGE. USE
(OFF)
ALTERNATE 2-W IRE
CONNECTION
CCW
INDICATES
M IC INPUT IS
CONTROL
10K
LINEAR
NOTE: CONTROL CCW CONNECTION MAY BE CABLE SHIELD
LEVEL
LED
!
AUDIO
C
T
R
L
INPUT
10V
O
U
T
1.5 KOhm
RESISTOR
(INCLUDED)
PW R IN
NORM AL
25 TURN
ADJUST
LEVELS
ON LEVEL
M ETER
ADJUST
GAIN
E
V
E
L
L
H IGH
(OFF)
CCW
PREFERRED 3-W IRE
CONNECTION
USE RDL RLC10K
REM OTE PANEL
Installation/Operation
10K LINEAR
M IC
UNBALANCED
OR
C
T
R
L
SOURCE
EN55103-1 E1-E5; EN55103-2 E1-E4
Typical Performance reflects product at publication time
exclusive of EMC data, if any, supplied with product.
Specifications are subject to change without notice.
Nominal Attenuation vs. DC control voltage
SIGNAL
FRO M
10V
OR
O
U
T
PW R IN
LINE
0 dB
-100
-10
-20
-30
-40
-50
-60
-70
-80
-90
SOURCE
POW ER
24 VDC
0
E
E
L
V
L
UNBALANCED
EQUIPM ENT
1
FEEDING
SIGNAL
LINE
2
C O N TR O L VO LTAG E
3
GENERATOR
0 TO 10 VDC
EQUIPM ENT
RG-1 RAMP
4
O R OTHER
FR OM RDL
CON TROL
VOLTAGE
5
C
T
R
L
10V
6
O
U
T
SOURCE
PW R IN
POW ER
24 VDC
7
8
9
E
V
E
L
L
10