SONY CXA1211

CXA1211M
Electronic Volume
Description
The CXA1211M is a wide band general-purpose
VCA. This bipolar IC incorporates 2 chnannels.
8 pin SOP (Plastic)
Features
• Wide band frequency characteristics:
100kHz to 20MHz (–0.5dB)
• Wide dynamic range
• Low noise, low distortion
• Low power consumption
Applications
Video signals and other wide band VCA
Operating Conditions
Supply voltage
VCC
Absolute Maximum Ratings
• Supply voltage
VCC
• Operating temperature Topr
• Storage temperature
Tstg
• Allowable power dissipation
PD
4.50 to 5.50
V
14
–20 to +75
–65 to +150
V
°C
°C
510
mW
VCC
IN2
CONT2
OUT2
Block Diagram and Pin Configuration
8
7
6
5
VCA2
1
2
3
4
IN1
CONT1
OUT1
GND
VCA1
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
–1–
E90534D8X
CXA1211M
Pin Description
Pin
No.
Symbol
Voltage
DC
AC
I/O
resistance
Equivalent circuit
Description
VCC
1
IN1
2.5V 1.0Vp-p∗ 40kΩ
1
Signal input pin
(CH1)
3k
40k
GND
VCC
2
CONT1 2.7V∗
Input pin of gain control signal
(CH1).
At "Low" power save is
possible.
2
24k
—
100µ
5k
Low: 1V and below
1µ 100µ
GND
VCC
129
3
OUT1
Signal output pin
(CH1)
1.9V 1.0Vp-p
3
1m
GND
4
GND
0V∗
—
—
GND pin
—
VCC
129
5
OUT2
Signal output pin
(CH2)
1.9V 1.0Vp-p
5
1m
GND
∗ External input
–2–
CXA1211M
Pin
No.
Symbol
Voltage
DC
AC
I/O
resistance
Equivalent circuit
Description
VCC
6
CONT2 2.7V∗
Input pin of gain control signal
(CH2).
At "Low" power save is
possible.
6
24k
—
100µ
5k
1µ 100µ
Low: 1V and below
GND
VCC
7
IN2
2.5V 1.0Vp-p∗ 40kΩ
7
Signal input pin
(CH2)
3k
40k
GND
8
VCC
5V∗
—
—
—
∗ External input
–3–
VCC pin
CXA1211M
Notes on Operation
Do not fail to take the following precautions upon usage of the CXA1211M.
1. Countermeasure to cross talk between channels
Fix a bypass capacitor to Pins CONT1 and CONT2 that control the amplifier gain. When the impedance of
the control voltage source is visible, depending on the package volume and others, cross talk between
channels is easily generated.
2. Input signal dynamic range
The input dynamic range is at a max of 1.4Vp-p. When the input signal exceeds 1.4Vp-p, the waveform may
be clipped and deformed.
–4–
CXA1211M
(Ta = 25°C, VCC = 5.0V, See Electrical Characteristics Test Circuit.)
Test conditions
Symbol Input conditions CONT SW set
voltage to ON
IN Level Freq (V)
Item
0
1-ch I1CH
Current
consumption Both-ch I2CH
Max. gain
Min. gain
0
2.87
CH1
G1MAX
1
CH2
G2MAX
500 300
mVp-p
kHz
7
CH1
G1MIN
1
CH2
G2MIN
500 300
mVp-p
kHz
7
5.0
1.8
Test point
Electrical Characteristics
When only 1ch is
A8 used, ch used is set
to 2.87V.
0, 1 3
7
5
0, 1 3
7
VF2
CH1
D1CH
1
CH2
D2CH
7
CH1
N1CH
1
CH2
N2CH
7
VF1
1
Distortion 1
S/N
1.0
Vp-p
5.0
MHz
0.5
Vp-p
100k
to
1.8
4.2M
Min. Typ. Max. Unit
2.0
4.0
6.0
4.5
7.5
12
3.0
5.0
7.0
mA
dB
–7.0 –5.0 –3.0 dB
5
300k
0, 1 3
500
to 2.87
7
5
7 mVp-p 20M
CH1
Frequency
characteristics CH2
Test method
20MHz level
300kHz level
0, 1 3 Adjust CONT to
obtain 1.0Vp-p at
5 output
7
–1.0
+1.3 dB
–40
dB
61
dB
0, 1 3
7
–5–
Test at no signal
5 conditon
CXA1211M
Electrical Characteristics Test Circuit
A8
0.1µ
0.01µ
V3
8
0.1µ
6
7
V5
10k
10P
5
3300P
OFF
VCA2
SW0
VCA1
ON
51
SW1
4
3
OUT1
CONT1
OFF
2
GND
1
ON
IN1
S.G.
OUT2
IN2
SW7
ON
VCC
OFF
CONT2
51k
V3
10k
51k
0.1µ
0.01µ
V2
–6–
10P
47µ
V1
CXA1211M
Application Circuit
∗ When VCA2 is not in use
0.1µ
8
7
6
5
VCC
3300P
47µ
5V
VCA2
VCA1
GND
1
2
3
4
0.1µ
S.G.
51
CONT
Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for
any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same.
–7–
CXA1211M
Frequency characteristics 1 (When Gain = 0dB)
150°
2.0
100°
0
Gain
50°
–2
–50°
–6
Phase
–100°
–8
–150°
–10
–200°
–12
–250°
–14
–300°
–16
–350°
0.1
1
–18
100
10
Frequency [MHz]
Frequency characteristics 2 (MAX Gain, MIN Gain)
+10
8
MAX
6
4
NORMAL
2
0
MIN
–2
–4
–6
–8
–10
0.1
1
10
Frequency [MHz]
–8–
100
Gain [dB]
–4
Gain [dB]
Phase [degree]
0°
CXA1211M
Gain vs. CONT voltage characteristics
Room temperature
VCC = 5.0V
5
4
3
Gain [dB]
2
1
0
–1
–2
–3
–4
2.0
3.0
CONT [V]
4.0
5.0
Gain vs. Temperature characteristics
0.4
VCC = 5.0V
f = 300kHz
Adjust to 0dB at 20°C
0.3
0.2
Gain [dB]
0.1
0.0
–0.1
–0.2
–0.3
–0.4
–0.5
–20
0
20
40
60
Temperature [°C]
–9–
80
100
CXA1211M
Package Outline
Unit: mm
8PIN SOP (PLASTIC)
+ 0.4
1.25 – 0.15
+ 0.4
5.0 – 0.1
8
0.10
5
6.4 ± 0.4
+ 0.3
4.4 – 0.1
A
4
1
1.27
b
0.24
M
+ 0.15
0.1 – 0.1
0.5 ± 0.2
B
(0.4)
DETAIL B : SOLDER
b = 0.4 ± 0.03
+ 0.03
0.15 – 0.01
+ 0.1
b = 0.4 – 0.05
(0.15)
+ 0.1
0.15 – 0.05
0° to 10°
DETAILA
DETAIL B : PALLADIUM
PACKAGE STRUCTURE
PACKAGE MATERIAL
EPOXY RESIN
SONY CODE
SOP-8P-L03
LEAD TREATMENT
SOLDER/PALLADIUM
PLATING
EIAJ CODE
SOP008-P-0225
LEAD MATERIAL
42/COPPER ALLOY
PACKAGE MASS
0.1g
JEDEC CODE
NOTE : PALLADIUM PLATING
This product uses S-PdPPF (Sony Spec.-Palladium Pre-Plated Lead Frame).
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