Download CMMI-2C - CineMag

Superior Magnetics Since 1979
CMMI-2C
Microphone Input Transformer
1 : 2 Step-up
$
$
$
$
Excellent bandwidth
Good CMRR: 96 dB @ 60 Hz
+4.87 dB step-up (loaded); 1 : 2 turns ratio
p.c. mount and lead packages
The CineMag CMMI-2C/PC is designed to take a very high level mic signal before reaching saturation. It has a
maximum input level at 20 Hz of +8 dBu. It has excellent bandwidth, very good common mode rejection ratio
(CMRR), and excellent distortion characteristics. The CMMI-2C/PC is available with either wire leads or p.c. pins. It
is encased in a FMetal can which provides 30 dB of magnetic shielding. All the internal Faraday foil shield wires are
spot welded for maximum long term reliability, as is so with all CineMag transformers.
CMMI-2C / CMMI-2CPC
Parameter
Conditions
Typ
Turns Ratio
1 : 2.00
Voltage Gain
1 kHz, -20 dBu 150S input, 6.19K secondary
load impedance
4.87 dB
Distortion (THD+N%)
1 kHz, +3dBu
20 Hz, -10dBu
0.007%
0.03%
Max 20 Hz input level
1.0% THD; 150 S input, 6.19K secondary
load impedance
Test Circuit 1
Response, ref 1 kHz
20 Hz
20 kHz
Phase Shift at 20 Hz
Phase Shift at 20 kHz
Referenced to source generator
Test Circuit 1
CMRR
60 Hz
1 kHz
Operating Temp Range
Operation and storage
Max Soldering Temp (p.c.)
5 Seconds
+8 dBu
Test Circuit 1
Test Circuit 1
-0.1 dB
+0.05 dB
+1E
-1E
96 dB
79 dB
Test Circuit 2 per IEEE Std 389-1996 ¶19
Test Circuit 2 per IEEE Std 389-1996 ¶19
9050 Independence Ave. Canoga Park, California 91304
http://www.cinemag.biz/
REV B
Test Circuit 1
Test Circuit 1
0E C Min
70E C Max
335EC Max
F(818) 993-4644 J (818) 993-4604
Copyright 2005-2014 CineMag Inc. All rights reserved.
+8dBu
-7dBu
+3dBu
-2dBu
Phase
Amplitude
-12dBu
40
30Hz
Hz
20Hz
Hz
50
60Hz
NOTES:
1. All graphs generated from one (1) randomly chosen device. No statistical averaging
or weighting. Data from one sweep.
OUT HI
75
75
6.19K
75
RED/2
WHI/10
YEL/11
75
BLK/9
TEST CIRCUIT 1
ORG/8
OUT HI
BRN/5
OSC
BRN/5
OSC
REV B
CMMI-2C/PC
ORG/8
6.19K
RED/2
YEL/11
CMMI-2C/PC
OUT LO
WHI/10
OUT LO
BLK/9
TEST CIRCUIT 2
Copyright 2005-2014 CineMag Inc. All rights reserved.
0.150
3.8mm
0.03
0.76mm
1.05 .020
26.6mm .5mm
1.55 + 020
39.4 + .5mm
0.86
21.84mm
1.32
33.5mm
1.66
42.2mm
0.27
6.9mm
BOTTOM VIEW
0.70
17.8mm
0.30
6.9mm
1.66
42.2mm
0.20
5.08mm
0.15
3.81mm
0.70
17.8mm
0.33
8.4mm
0.38
9.65mm
Pin 1
1.40
35.6mm
1.32
33.5mm
Pin 12
4-40 STUD
0.30
7.6mm
0.27
6.9mm
0.03
0.76mm
1.55 + .020
39.4 + .5mm
1.32
33.5mm
1.55 + .020
39.4 + .5mm
1.32
33.5mm
0.70
17.8mm
0.30
6.9mm
0.70
17.8mm
1.32
33.5mm
0.370
9.4mm
1.32
33.5mm
0.025”
0.635mm
0.025”
0.635mm