Harman Kardon MAS 101-102-111 (serv.man3) Service Manual ▷ View online
LM9022
Vacuum Fluorescent Display Filament Driver
Vacuum Fluorescent Display Filament Driver
General Description
The LM9022 is a bridged power amplifier capable of deliv-
ering typically 2W of continuous average power into a 10
ering typically 2W of continuous average power into a 10
Ω
filament load when powered by a 5V power supply.
To conserve power in portable applications, the LM9022’s
micropower shutdown mode (I
micropower shutdown mode (I
Q
= 0.6µA, typ) is activated
when V
DD
is applied to the SHUTDOWN pin.
Additional LM9022 features include thermal shutdown pro-
tection, unity-gain stability, and external gain set.
tection, unity-gain stability, and external gain set.
Key Specifications
n
I
DD
during shutdown
0.6µA (typ)
n
Thermal Shutdown Protection
Features
n
No transformers required
n
SO or DIP packaging
Applications
n
VCR/DVD Displays
n
RADIO/TUNER Displays
Typical Application
T
A
= 25˚C, V
DD
= 5V, unless otherwise specified.
Connection Diagram
MSOP, Small Outline, and DIP Package
20021502
Top View
Order Number LM9022M or LM9022N
See NS Package Number M08A or N08E
20021501
FIGURE 1. Typical Application Circuit
August 2005
LM9022
V
acuum
Fluorescent
Display
Filament
Driver
35
October 6, 2008
LMV831 Single/ LMV832 Dual/ LMV834 Quad
3.3 MHz Low Power CMOS, EMI Hardened Operational
Amplifiers
3.3 MHz Low Power CMOS, EMI Hardened Operational
Amplifiers
General Description
National’s LMV831, LMV832, and LMV834 are CMOS input,
low power op amp IC's, providing a low input bias current, a
wide temperature range of −40°C to 125°C and exceptional
performance making them robust general purpose parts. Ad-
ditionally, the LMV831/LMV832/LMV834 are EMI hardened
to minimize any interference so they are ideal for EMI sensi-
tive applications.
low power op amp IC's, providing a low input bias current, a
wide temperature range of −40°C to 125°C and exceptional
performance making them robust general purpose parts. Ad-
ditionally, the LMV831/LMV832/LMV834 are EMI hardened
to minimize any interference so they are ideal for EMI sensi-
tive applications.
The unity gain stable LMV831/LMV832/LMV834 feature
3.3 MHz of bandwidth while consuming only 0.24 mA of cur-
rent per channel. These parts also maintain stability for ca-
pacitive loads as large as 200 pF. The LMV831/LMV832/
LMV834 provide superior performance and economy in terms
of power and space usage.
3.3 MHz of bandwidth while consuming only 0.24 mA of cur-
rent per channel. These parts also maintain stability for ca-
pacitive loads as large as 200 pF. The LMV831/LMV832/
LMV834 provide superior performance and economy in terms
of power and space usage.
This family of parts has a maximum input offset voltage of
1 mV, a rail-to-rail output stage and an input common-mode
voltage range that includes ground. Over an operating range
from 2.7V to 5.5V the LMV831/LMV832/LMV834 provide a
PSRR of 93 dB, and a CMRR of 91 dB. The LMV831 is offered
in the space saving 5-Pin SC70 package, the LMV832 in the
8-Pin MSOP and the LMV834 is offered in the 14-Pin TSSOP
package.
1 mV, a rail-to-rail output stage and an input common-mode
voltage range that includes ground. Over an operating range
from 2.7V to 5.5V the LMV831/LMV832/LMV834 provide a
PSRR of 93 dB, and a CMRR of 91 dB. The LMV831 is offered
in the space saving 5-Pin SC70 package, the LMV832 in the
8-Pin MSOP and the LMV834 is offered in the 14-Pin TSSOP
package.
Features
Unless otherwise noted, typical values at T
A
= 25°C,
V
+
= 3.3V
■
Supply voltage
2.7V to 5.5V
■
Supply current (per channel)
240 µA
■
Input offset voltage
1 mV max
■
Input bias current
0.1 pA
■
GBW
3.3 MHz
■
EMIRR at 1.8 GHz
120 dB
■
Input noise voltage at 1 kHz
12 nV/
√
Hz
■
Slew rate
2 V/µs
■
Output voltage swing
Rail-to-Rail
■
Output current drive
30 mA
■
Operating ambient temperature range
−40°C to 125°C
Applications
■
Photodiode preamp
■
Piezoelectric sensors
■
Portable/battery-powered electronic equipment
■
Filters/buffers
■
PDAs/phone accessories
Typical Application
EMI Hardened Sensor Application
30024101
LMV831 Single/ LMV832 Dual/ LMV834 Quad 3.3 MHz Low Power CMOS, EMI Hardened
Operational Amplifiers
36
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
ESD Tolerance (Note 2)
Human Body Model
2 kV
Charge-Device Model
1 kV
Machine Model
200V
V
IN
Differential
± Supply Voltage
Supply Voltage (V
S
= V
+
– V
−
)
6V
Voltage at Input/Output Pins
V
+
+0.4V,
V
−
−0.4V
Storage Temperature Range
−65°C to 150°C
Junction Temperature (Note 3)
150°C
Soldering Information
Infrared or Convection (20 sec)
260°C
Operating Ratings
(Note 1)
Temperature Range (Note 3)
−40°C to 125°C
Supply Voltage (V
S
= V
+
– V
−
)
2.7V to 5.5V
Package Thermal Resistance (
θ
JA
(Note 3))
5-Pin SC-70
302°C/W
8-Pin MSOP
217°C/W
14-Pin TSSOP
135°C/W
3.3V Electrical Characteristics
(Note 4)
Unless otherwise specified, all limits are guaranteed for at T
A
= 25°C, V
+
= 3.3V, V
−
= 0V, V
CM
= V
+
/2, and R
L
=10 k
Ω
to V
+
/2.
Boldface limits apply at the temperature extremes.
Symbol
Parameter
Conditions
Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
V
OS
Input Offset Voltage
(Note 9)
(Note 9)
±0.25
±1.00
±1.23
±1.23
mV
TCV
OS
Input Offset Voltage Temperature Drift
(Notes 9, 10)
(Notes 9, 10)
LMV831,
LMV832
LMV832
±0.5
±1.5
μ
V/°C
LMV834
±0.5
±1.7
I
B
Input Bias Current
(Note 10)
(Note 10)
0.1
10
500
pA
I
OS
Input Offset Current
1
pA
CMRR
Common-Mode Rejection Ratio
(Note 9)
(Note 9)
0.2V
≤
V
CM
≤
V
+
- 1.2V
76
75
75
91
dB
PSRR
Power Supply Rejection Ratio
(Note 9)
(Note 9)
2.7V
≤
V
+
≤
5.5V,
V
OUT
= 1V
76
75
75
93
dB
EMIRR
EMI Rejection Ratio, IN+ and IN-
(Note 8)
(Note 8)
V
RF_PEAK
=100 mV
P
(−20 dB
P
),
f = 400 MHz
80
dB
V
RF_PEAK
=100 mV
P
(−20 dB
P
),
f = 900 MHz
90
V
RF_PEAK
=100 mV
P
(−20 dB
P
),
f = 1800 MHz
110
V
RF_PEAK
=100 mV
P
(−20 dB
P
),
f = 2400 MHz
120
CMVR
Input Common-Mode Voltage Range
CMRR
≥
65 dB
−0.1
2.1
V
A
VOL
Large Signal Voltage Gain
(Note 11)
(Note 11)
R
L
= 2 k
Ω,
V
OUT
= 0.15V to 1.65V,
V
OUT
= 3.15V to 1.65V
LMV831,
LMV832
LMV832
102
102
102
121
dB
LMV834
102
102
102
121
R
L
= 10 k
Ω,
V
OUT
= 0.1V to 1.65V,
V
OUT
= 3.2V to 1.65V
LMV831,
LMV832
LMV832
104
104
104
126
LMV834
104
103
103
123
LMV831 Single/ LMV832 Dual/ LMV834 Quad
37
Symbol
Parameter
Conditions
Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
V
OUT
Output Voltage Swing High
R
L
= 2 k
Ω
to V
+
/2
LMV831,
LMV832
LMV832
29
36
43
43
mV from
either rail
LMV834
31
38
44
44
R
L
= 10 k
Ω
to V
+
/2
LMV831,
LMV832
LMV832
6
8
9
9
LMV834
7
9
10
Output Voltage Swing Low
R = 2 k
Ω
to V
+
/2
25
34
43
43
R
L
= 10 k
Ω
to V
+
/2
5
8
10
I
OUT
Output Short Circuit Current
Sourcing, V
OUT
= V
CM
,
V
IN
= 100 mV
LMV831,
LMV832
LMV832
27
22
22
28
mA
LMV834
24
19
19
28
Sinking, V
OUT
= V
CM
,
V
IN
= −100 mV
27
21
21
32
I
S
Supply Current
LMV831
0.24
0.27
0.30
0.30
mA
LMV832
0.46
0.51
0.58
0.58
LMV834
0.90
1.00
1.16
1.16
SR
Slew Rate (Note 7)
A
V
= +1, V
OUT
= 1 V
PP
,
10% to 90%
2
V/
μ
s
GBW
Gain Bandwidth Product
3.3
MHz
Φ
m
Phase Margin
65
deg
e
n
Input Referred Voltage Noise Density f = 1 kHz
12
nV/
f = 10 kHz
10
i
n
Input Referred Current Noise Density f = 1 kHz
0.005
pA/
R
OUT
Closed Loop Output Impedance
f = 2 MHz
500
Ω
C
IN
Common-mode Input Capacitance
15
pF
Differential-mode Input Capacitance
20
THD+N
Total Harmonic Distortion + Noise
f = 1 kHz, A
V
= 1, BW
≥
500 kHz
0.02
%
5V Electrical Characteristics
(Note 4)
Unless otherwise specified, all limits are guaranteed for at T
A
= 25°C, V
+
= 5V, V
−
= 0V, V
CM
= V
+
/2, and R
L
= 10 k
Ω
to V
+
/2.
Boldface limits apply at the temperature extremes.
Symbol
Parameter
Conditions
Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
V
OS
Input Offset Voltage
(Note 9)
(Note 9)
±0.25
±1.00
±1.23
±1.23
mV
TCV
OS
Input Offset Voltage Temperature Drift
(Notes 9, 10)
(Notes 9, 10)
LMV831,
LMV832
LMV832
±0.5
±1.5
μ
V/°C
LMV834
±0.5
±1.7
I
B
Input Bias Current
(Note 10)
(Note 10)
0.1
10
500
pA
I
OS
Input Offset Current
1
pA
CMRR
Common-Mode Rejection Ratio
(Note 9)
(Note 9)
0V
≤
V
CM
≤
V
+
−1.2V
77
77
77
93
dB
LMV831 Single/ LMV832 Dual/ LMV834 Quad
38
Click on the first or last page to see other MAS 101-102-111 (serv.man3) service manuals if exist.