ZNBG3113 Datasheet, PDF (7/17 Pages) Zetex Semiconductors – FET BIAS CONTROLLER WITH POLARISATION SWITCH AND TONE DETECTION

ZNBG3113
ZNBG3114
TYPICAL CHARACTERISTICS
70
Vcc = 5V
60
50
40
30
20
10
0
100
1k
10k
100k
1M
10M
Frequency (Hz)
Open Loop Gain v Frequency
VCC = 5V
4
VLOV = 0V
Tamb = 70°C
2
Tamb = 25°C
Tamb = -40°C
0
-2
-4
-6
-8
0
10
20
30
40
50
Load Current (mA)
LB/HB Offset Voltage v Load Current
180
VCC = 5V
150
120
90
60
30
0
100
1k
10k
100k
1M
10M
Frequency (Hz)
Open Loop Phase v Frequency
2.0
1.9
Tamb = -40 C
1.8
1.7
1.6
1.5
1.4
Tamb = 25°C
Tamb = 70°C
1.3
VCC = 5V
1.2
0
10
20
30
40
50
Load Current (mA)
LB/HB Dropout Voltage v Load Current
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
100
VCC = 5V
VIN=0.1Vpkpk
Test Circuit 1
1k
10k
100k
1M
Frequency (Hz)
Filter Response
100
VCC = 5V
Stable region
10
Unstable Region
1.0
0.1
10pF 100pF 1nF 10nF 100nF 1uF
LB/HB Load Capacitance
Stability Boundary
4-129