ZARLINK SL6310C

THIS DOCUMENT IS FOR MAINTENANCE
PURPOSES ONLY AND IS NOT
RECOMMENDED FOR NEW DESIGNS
DS 3302 -1
SL6310C
500mW SWITCHABLE AUDIO AMPLIFIER/OP AMP
The SL6310C is a low power audio amplifier which can be
switched off by applying a mute signal to the appropriate pin.
Despite the low quiescent current consumption of 5mA (only
0.6mA when muted) a minimum output power of 400mW is
available into an 8Ω load from a 9V supply.
NON INV. INPUT
1
8
MUTE "B"
INV. INPUT
2
7
MUTE "A"
EARTH
3
6
NC
OUTPUT
4
5
VCC
SL6310
FEATURES
MP8
DG8
DP8
Can be Muted with High or Low State inputs
Operational Amplifier Configuration
Works Over Wide Voltage Range
Fig. 1 Pin connections, SL6310 - (top view)
APPLICATIONS
V
Audio Amplifier for Portable Receivers
Power Op. Amp
High Level Active Filter
CC
100µ
MUTE B MUTE A
8
7
R1
220k
QUICK REFERENCE DATA
100n
6
5
+
1
2
3
4
INPUT
Supply Voltage: 4.5V to 13.6V
Voltage Gain: 70dB
Output into 8Ω on 9V Supply : 400mW (min.)
OUTPUT
R4
120k
R2
220k
100µ
1µ
ABSOLUTE MAXIMUM RATINGS
Supply voltage: 15V
Storage temperature: —55°C to + 125°C
8
LOAD
220n
R3
4.7k
Fig. 2 SL6310 Test Circuit
EARTH
SL6310C
ELECTRICAL CHARACTERISTICS
Test conditions (unless otherwise stated):
Supply voltage Vcc: 7V
Ambient temperature: -30°C to +85°C
Mute facility : Pins 7 and 8 open circuit frequency = 1kHz
Value
Characteristics
Units
Min.
Conditions
Typ.
Max.
Supply current
5.0
7.5
mA
Supply current mute (A)
0.55
1
mA
Pin 7 via 470k to earth
0.6
0.9
mA
Pin 8 = VCC
RS ≤ 10k
Supply current mute (B)
2
20
mV
Input offset current
50
500
nA
Input bias current (Note 1)
0.2
1
µA
Input offset voltage
40
Voltage gain
Input voltage range
CMRR
40
Output power
400
THD
70
dB
2.1
V
VCC = 4.5V
10.6
V
VCC = 13V
60
dB
RS ≤10K
500
mW
RL = 8Ω
0.4
3
%
POUT = 400mW,
Gain = 28dB
NOTE
1.
The input bias current flows out of pins 1 and 2 due to PNP input stage
Fig. 3 SL6310 lamp driver
Fig. 4 SL6310 servo amplifier
OPERATING NOTES
Mute facility
The SL6310 has two mute control pins to allow easy
interfacing to inputs of high or low levels. Mute control ‘A’, pin
7, is left open circuit or connected to a voltage within 0.65 volt
of Vcc (via a 100kΩ resistor) for normal operation. When the
voltage on pin 7 is reduced to within 1 volt of earth (via a 100kΩ
resistor) the SL6310 is muted
Audio amplifier
AstheSL6310 is an operational amplifier it is easy to obtain
the voltage gain and frequency response required. To keep
the input impedance high it is wise to feed the signal to the noninverting input as shown in Fig.2. In this example the input
impedance is approximately 100kΩ. The voltage gain is
determined by the ratio (R3 + R4)/R3 and should be between
3 and 30 for best results. The capacitor in series with R3,
together with the input and output coupling capacitors,
determines the low frequency rolloff point. The upper
frequency limit is set by the device but can be restricted by
connecting a capacitor across R4.
Operational amplifier
It is impossible to list all the application possibilities in a
single data sheet but the SL6310 offers considerable
advantages over conventional devices in high output current
applications such as lamp drivers (Fig.3) and servo amplifiers
(Fig.4) .
Buffer and output stages for signal generators are another
possibility together with active filter sections requiring high
output current.
SL6310C
80
74
72
60
GAIN (dB)
GAIN (dB)
70
40
68
66
64
20
100
1k
10k
62
100k
4
8
FREQUENCY (Hz)
Fig. 5 Gain v. frequency
4
MUTE B
MUTE A
MUTE B : PIN 8 TO SUPPLY
MUTE A : PIN 7 TO EARTH BY 100k RESISTOR
0
4
8
2
0
12
VOLTAGE (V)
Fig. 7 Supply current v. supply voltage
4
OUTPUT POWER (W)
1000
CURRENT IN NON - MUTED STATE (mA)
NON - MUTED
CURRENT IN MUTED STATE (µA)
1.2
6
0
10
Fig. 6 Gain v. supply voltage
1500
500
12
VOLTAGE (V)
LOAD
0.8
8
LOAD
0.4
16
LOAD
0
0
4
8
12
VOLTAGE (V)
Fig. 8 Output power v. supply voltage at 5% (max) distortion