|
|
PDF ADA4891-3 Data sheet ( Hoja de datos )
| Número de pieza | ADA4891-3 | |
| Descripción | Rail-to-Rail Amplifiers | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ADA4891-3 (archivo pdf) en la parte inferior de esta página. Total 24 Páginas | ||
|
No Preview Available !
Low Cost CMOS, High Speed,www.DataSheet4U.com
Rail-to-Rail Amplifiers
ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4
FEATURES
High speed and fast settling
−3 dB bandwidth: 220 MHz (G = +1)
Slew rate: 170 V/μs
Settling time to 0.1%: 28 ns
Video specifications (G = +2, RL = 150 Ω)
0.1 dB gain flatness: 25 MHz
Differential gain error: 0.05%
Differential phase error: 0.25°
Single-supply operation
Wide supply range: 2.7 V to 5.5 V
Output swings to within 50 mV of supply rails
Low distortion: 79 dBc SFDR at 1 MHz
Linear output current: 125 mA at −40 dBc
Low power: 4.4 mA per amplifier
APPLICATIONS
Imaging
Consumer video
Active filters
Coaxial cable drivers
Clock buffers
Photodiode preamp
Contact image sensor and buffers
GENERAL DESCRIPTION
The ADA4891-1 (single), ADA4891-2 (dual), ADA4891-3 (triple),
and ADA4891-4 (quad) are CMOS, high speed amplifiers that
offer high performance at a low cost. The amplifiers feature true
single-supply capability, with an input voltage range that extends
300 mV below the negative rail.
In spite of their low cost, the ADA4891 family provides high
performance and versatility. The rail-to-rail output stage enables
the output to swing to within 50 mV of each rail, enabling maxi-
mum dynamic range.
The ADA4891 family of amplifiers is ideal for imaging applica-
tions, such as consumer video, CCD buffers, and contact image
sensor and buffers. Low distortion and fast settling time also
make them ideal for active filter applications.
The ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4 are avail-
able in a wide variety of packages. The ADA4891-1 is available
in 8-lead SOIC and 5-lead SOT-23 packages. The ADA4891-2
is available in 8-lead SOIC and 8-lead MSOP packages. The
ADA4891-3 and ADA4891-4 are available in 14-lead SOIC and
14-lead TSSOP packages. The amplifiers are specified to operate
over the extended temperature range of −40°C to +125°C.
CONNECTION DIAGRAMS
ADA4891-1
NC 1
–IN 2
+IN 3
–VS 4
8 NC
7 +VS
6 OUT
5 NC
NC = NO CONNECT
Figure 1. 8-Lead SOIC_N (R-8)
ADA4891-1
OUT 1
–VS 2
+IN 3
5 +VS
4 –IN
Figure 2. 5-Lead SOT-23 (RJ-5)
ADA4891-2
OUT1 1
–IN1 2
+IN1 3
–VS 4
8 +VS
7 OUT2
6 –IN2
5 +IN2
NC = NO CONNECT
Figure 3. 8-Lead SOIC_N (R-8) and 8-Lead MSOP (RM-8)
ADA4891-3
PD1 1
14 OUT2
PD2 2
13 –IN2
PD3 3
+VS 4
+IN1 5
12 +IN2
11 –VS
10 +IN3
–IN1 6
9 –IN3
OUT1 7
8 OUT3
Figure 4. 14-Lead SOIC_N (R-14) and 14-Lead TSSOP (RU-14)
ADA4891-4
OUT1 1
–IN1 2
+IN1 3
+VS 4
+IN2 5
–IN2 6
OUT2 7
14 OUT4
13 –IN4
12 +IN4
11 –VS
10 +IN3
9 –IN3
8 OUT3
Figure 5. 14-Lead SOIC_N (R-14) and 14-Lead TSSOP (RU-14)
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2010 Analog Devices, Inc. All rights reserved.
1 page  
ADA4891-1/ADA4891-2/ADA489w1w-w3.D/aAtaSDheAet44U8.co9m1-4
Parameter
OUTPUT CHARACTERISTICS
Output Voltage Swing
Output Current
Short-Circuit Current
Sourcing
Sinking
POWER-DOWN PINS (PD1, PD2, PD3)
Threshold Voltage, VTH
Bias Current
Turn-On Time
Turn-Off Time
POWER SUPPLY
Operating Range
Quiescent Current per Amplifier
Supply Current When Powered Down
Power Supply Rejection Ratio (PSRR)
Positive PSRR
Negative PSRR
OPERATING TEMPERATURE RANGE
Test Conditions/Comments
RL = 1 kΩ to 1.5 V
RL = 150 Ω to 1.5 V
1% THD with 1 MHz, VO = 2 V p-p
Min
ADA4891-3 only
Part enabled
Part powered down
Part enabled, output rises to 90% of final value
Part powered down, output falls to 10% of final
value
2.7
ADA4891-3 only
+VS = 3 V to 3.15 V, −VS = 0 V
+VS = 3 V, −VS = −0.15 V to 0 V
−40
Typ Max Unit
0.01 to 2.98
0.07 to 2.87
37
80
163
V
V
mA
mA
mA
1.3 V
48 nA
−13 μA
185 ns
58 ns
5.5 V
3.5 mA
0.73 mA
76 dB
72 dB
+125 °C
Rev. B | Page 5 of 24
5 Page 
ADA4891-1/ADA4891-2/ADA489w1w-w3.D/aAtaSDheAet44U8.co9m1-4
100
VGS==+51V
10
1
0.1
0.01
0.01 0.1 1 10 100
FREQUENCY (MHz)
Figure 31. Closed-Loop Output Impedance vs. Frequency, Part Enabled
100k
10k
1k
100
10
VS = 5V
G = +1
1
0.01
0.1
1 10
FREQUENCY (MHz)
100
Figure 34. Closed-Loop Output Impedance vs. Frequency, Part Disabled
(ADA4891-3 Only)
VS = 3V
100
VS = 5V
0
–100
50mV/DIV
G = +1
VOUT = 200mV p-p
RL = 1kΩ
5ns/DIV
Figure 32. Small-Signal Step Response, G = +1
1.5
RVL S=
= 5V
1kΩ
1.0
RLV=S1=505ΩV
0.5
0
VRSL
=
=
3V
150Ω
VRSL
=
=
3V
1kΩ
G = +2
VOUT = 2V p-p
–0.5
–1.0
–1.5
10 20 30 40 50 60 70 80
TIME (ns)
Figure 35. Large-Signal Step Response, G = +2
90
RL = 1kΩ
1
RL = 150Ω
0
VS = 5V
G = +1
VOUT = 2V p-p
RL = 1kΩ
0.5
RL = 150Ω
0
VGS==+31V
VOUT = 1V p-p
–1
0.5V/DIV
5ns/DIV
Figure 33. Large-Signal Step Response, VS = 5 V, G = +1
–0.5
0.5V/DIV
5ns/DIV
Figure 36. Large-Signal Step Response, VS = 3 V, G = +1
Rev. B | Page 11 of 24
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet ADA4891-3.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ADA4891-1 | Rail-to-Rail Amplifiers | Analog Devices |
| ADA4891-2 | Rail-to-Rail Amplifiers | Analog Devices |
| ADA4891-3 | Rail-to-Rail Amplifiers | Analog Devices |
| ADA4891-4 | Rail-to-Rail Amplifiers | Analog Devices |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |