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PDF TS925 Data sheet ( Hoja de datos )
| Número de pieza | TS925 | |
| Descripción | RAIL TO RAIL HIGH OUTPUT CURRENT QUAD OPERATIONAL AMPLIFIER | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TS925 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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® TS925
RAIL TO RAIL HIGH OUTPUT CURRENT
QUAD OPERATIONAL AMPLIFIER
. RAIL TO RAIL INPUT AND OUTPUT
. LOW NOISE : 9nV/√Hz
. LOW DISTORTION
. HIGH OUTPUT CURRENT : 80mA
(able to drive 32Ω loads)
. HIGH SPEED : 4MHz, 1.3V/µs
. OPERATING FROM 2.7V TO 12V
. LOW INPUT OFFSET VOLTAGE : 900µV max.
.. (TS925A)
ADJUSTABLE PHANTOM GROUND (VCC/2)
STANDBY MODE
... ESD INTERNAL PROTECTION : 2kV
LATCH-UP IMMUNITY
MACROMODEL INCLUDED IN THIS
SPECIFICATION
N
DIP16
(Plastic Package)
D
SO16
(Plastic Micropackage)
P
TSSOP16
(Thin Shrink Small Outline Package)
DESCRIPTION
The TS925 is a RAIL TO RAIL quad BiCMOS
operational amplifier optimized and fully specified
for 3V and 5V operation.
High output current allows low load impedances to
be driven. An internal low impedance PHANTOM
GROUND eliminates the need for an external ref-
erence voltage or biasing arrangement.
The TS925 exhibits a very low noise, low distortion
and high output current making this device an
excellent choice for high quality, low voltage or
battery operated audio/telecom systems.
The device is stable for capacitive loads up to
500pF.
When the STANDBY mode is enabled, the total
consumption drops to 6µA (VCC = 3V).
APPLICATIONS
. Headphone amplifier
. Soundcard amplifier, piezoelectric speaker
. MPEG boards, multimedia systems, ...
. Cordless telephones and portable communica-
tion equipment
. Line driver, buffer
. Instrumentation with low noise as key factor
ORDER CODES
Part Number Temperature Range
TS925I
-40, +125oC
Package
NDP
•••
PIN CONNECTIONS
O utput 1 1
Inve rting
Inp ut 1 2
Non-inve rting
Inp ut 1 3
V+
CC
4
Non-inve rting
Inp ut 2
Inve rting
Inp ut 2
5
6
O utput 2 7
P hantom ground 8
-+
+-
16 O utput 4
15 Inve rting
Inp u t 4
14 Non -inverting
Inp u t 4
13
V-
CC
12 Non -inverting
Inp u t 3
11 Inve rting
Inp u t 3
10 O utput 3
9 S tdby
March 1999
1/16
1 page  
TS925
ELECTRICAL CHARACTERISTICS
VCC+
=
5V,
VC
-
C
=
0V,
Tamb
=
25oC
(unless
otherwise
specified)
OPERATIONAL AMPLIFIER
Symbol
Vio
DVio
Iio
Iib
VOH
VOL
Avd
GBP
CMR
SVR
Io
SR
Pm
GM
Parameter
Input OffsetVoltage
Input Offset Voltage Drift
Input Offset Current
Input Bias Current
High Level Output Voltage
RL connected to VCC/2
Low Level Output Voltage
RL connected to VCC/2
Large Signal Voltage Gain
Gain Bandwidth Product
Common Mode Rejection Ratio
Supply Voltage RejectionRatio
Output Short-circuit Current
Slew Rate
Phase Margin at Unit Gain
Gain Margin
Test Condition
Tmin. < Tamb. < Tmax.
TS925
TS925A
TS925
TS925A
Vout = 2.5V
Vout = 2.5V
RL = 10k
RL = 600Ω
RL = 32Ω
RL = 10k
RL = 600Ω
RL = 32Ω
Vout = 4Vpk-pk
RL = 10k
RL = 600Ω
Vout = 2Vpk-pk, RL = 32Ω
RL = 600Ω
VCC = 3V to 5V
RL = 600Ω, CL = 100pF
RL = 600Ω, CL = 100pF
en Equivalent Input Noise Voltage
f = 1KHz
THD Total Harmonic Distortion
Cs Channel Separation
Vout = 3Vpk-pk, f= 1kHz
AV = 1
RL = 600Ω
Min.
4.9
4.85
60
60
50
0.7
Typ.
2
1
15
4.4
300
200
40
17
4
80
85
80
1.3
68
12
9
0.01
Max.
3
0.9
5
1.8
30
100
Unit
mV
µV/oC
nA
nA
V
50 mV
120
V/mV
MHz
dB
dB
mA
V/µs
Degrees
dB
nV
√Hz
%
120 dB
5/16
5 Page 
Figure 2 : Frequency Response of the Global
Preamplifier Chain
70
60
50
40
30
20
100
1000
10000 100000 1000000 10000000 1.0E+08
frequency (Hz)
TS925
Headphone amplifier : the operators A2 and A3
are organized in a push-pull configuration with a
gain of 5. The stereo inputs can be connected to a
CD-player and the TS925 drives directly the head-
phone speakers.This configuration shows the abil-
ity of the circuit to drive 32Ω load with a maximum
output swing and a high fidelity for reproducing
sound and music.
Figure 4 shows the available signal swing at the
headset outputs : two other rail to rail competitor
parts are employed in the same circuit for compari-
son (note the much reduced clipping level and
crossover distortion)
Figure 4 : Maximum Voltage Swing at
Headphone Outputs (RL = 32Ω)
Figure 3 : Voltage Noise Density versus
Frequency at Preamplifier Output
15
14
13
12
11
10
9
8
7
10
1 00
1000
10000
frequency (Hz)
1 00000
Figure 5 : THD+Noise versus Frequency
(headphone outputs)
0.4
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0
100
1000
Hz
10000
100000
11/16
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet TS925.PDF ] | |
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