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PDF ADA4896-2 Data sheet ( Hoja de datos )
| Número de pieza | ADA4896-2 | |
| Descripción | (ADA4896-2 / ADA4897-1) Rail-to-Rail Output Amplifiers | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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1 nV/√Hz, Low Power,
Rail-to-Rail Output Amplifiers
ADA4896-2/ADA4897-1
FEATURES
Low wideband noise
1 nV/√Hz
2.8 pA/√Hz
Low 1/f noise
2.4 nV/√Hz @ 10 Hz
Low distortion: −115 dBc @ 100 kHz, VOUT = 2 V p-p
Low power: 3 mA/amp
Low input offset voltage: 0.5 mV maximum
High speed
230 MHz, −3 dB bandwidth (G = +1)
120 V/μs slew rate
45 ns settling time to 0.1%
Rail-to-rail output
Wide supply range: 3 V to 10 V
Disable feature (ADA4897-1)
APPLICATIONS
Low noise preamplifier
Ultrasound amplifiers
PLL loop filters
High performance ADC drivers
DAC buffers
GENERAL DESCRIPTION
The ADA4896-2/ADA4897-1 are unity gain stable, low noise,
rail-to-rail output, high speed voltage feedback amplifiers
that have a quiescent current of 3 mA. With the 1/f noise of
2.4 nV/√Hz at 10 Hz and a spurious-free dynamic range of
−80 dBc at 2 MHz, the ADA4896-2/ADA4897-1 are an ideal
solution in a variety of applications, including ultrasound, low
noise preamplifiers, and drivers of high performance ADCs.
The Analog Devices, Inc., proprietary next generation SiGe
bipolar process and innovative architecture enable such high
performance amplifiers.
TheADA4896-2/ADA4897-1 have 230 MHz bandwidth,
120 V/μs slew rate, and settle to 0.1% in 45 ns. With a wide
supply voltage range (3 V to 10 V), the ADA4896-2/ADA4897-1
are ideal candidates for systems that require high dynamic
range, precision, and high speed.
The ADA4896-2 is available in 8-lead LFCSP and 8-lead MSOP
packages. The ADA4897-1 is available in 8-lead SOIC and
6-lead SOT-23 packages. Both the ADA4896-2 and ADA4897-1
work over the extended industrial temperature range of −40°C
to +125°C.
FUNCTIONAL BLOCK DIAGRAM
NC 1
–IN 2
+IN 3
–VS 4
8 DISABLE
7 +VS
6 OUT
5 NC
Figure 1. 8-Lead SOIC (ADA4897-1)
8 VS = ±5V
7
6
5
4
3
2
1
0
1 10 100 1k 10k 100k 1M 5M
FREQUENCY (Hz)
Figure 2. Voltage Noise vs. Frequency
www.DataSheet.co.kr
Table 1. Other Low Noise Amplifiers
VN (nV/√Hz) VN (nV/√Hz)
Supply
Part Number @ 1 kHz
@ 100 kHz BW (MHz) Voltage (V)
AD797
0.9
0.9
8
10 to 30
AD8021
5
2.1 490 5 to 24
AD8099
7
0.95 510 5 to 12
AD8045
6
3
1000
3.3 to 12
ADA4899-1 1.4
1
600 5 to 12
ADA4898-1/ 0.9 0.9 65 10 to 32
ADA4898-2
Table 2. Complementary ADCs
Part Number Bits
Speed (MSPS)
AD7944
14
2.5
AD7985
16
2.5
AD7986
18
2
Power (mW)
15.5
15.5
15
Rev. 0
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
©2011 Analog Devices, Inc. All rights reserved.
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
+5 V SUPPLY
TA = 25°C, G = +1, RL = 1 kΩ to midsupply, unless otherwise noted.
Table 4.
Parameter
DYNAMIC PERFORMANCE
−3 dB Bandwidth
Bandwidth for 0.1 dB Flatness
Slew Rate
Settling Time to 0.1%
Settling Time to 0.01%
NOISE/HARMONIC PERFORMANCE
Harmonic Distortion (dBc) SFDR
Input Voltage Noise
Input Current Noise
0.1 Hz to 10 Hz Noise
DC PERFORMANCE
Input Offset Voltage
Input Offset Voltage Drift
Input Bias Current
Input Bias Current Drift
Input Bias Offset Current
Open-Loop Gain
INPUT CHARACTERISTICS
Input Resistance
Input Capacitance
Input Common-Mode Voltage Range
Common-Mode Rejection
OUTPUT CHARACTERISTICS
Overdrive Recovery Time
+Output Voltage Swing
−Output Voltage Swing
+Output Voltage Swing
−Output Voltage Swing
Output Current
Short-Circuit Current
Capacitive Load Drive
POWER SUPPLY
Operating Range
Quiescent Current per Amplifier
Positive Power Supply Rejection
Negative Power Supply Rejection
Conditions
G = +1, VOUT = 0.02 V p-p
G = +1, VOUT = 2 V p-p
G = +2, VOUT = 0.02 V p-p
G = +2, VOUT = 2 V p-p, RL = 100 Ω
G = +2, VOUT = 3 V step
G = +2, VOUT = 2 V step
G = +2, VOUT = 2 V step
fC = 100 kHz, VOUT = 2 V p-p
fC = 1 MHz, VOUT = 2 V p-p
fC = 2 MHz, VOUT = 2 V p-p
fC = 5 MHz, VOUT = 2 V p-p
f = 10 Hz
f = 100 kHz
f = 10 Hz
f = 100 kHz
G = +101, RF = 1 kΩ, RG = 10 Ω
www.DataSheet.co.kr
VOUT = 0.5 V to 4.5 V
Common mode/differential
Common mode/differential
VCM = +1 V to +4 V
VIN = 0 V to 5 V, G = +2
RL = 1 kΩ
RL = 1 kΩ
RL = 100 Ω
RL = 100 Ω
45 dBc SFDR
Sinking/sourcing
30% overshoot, G = +2
DISABLE = 0 V
+VS = 4.5 V to 5.5 V, −VS = 0 V
+VS = 5 V, −VS = −0.5 V to +0.5 V
ADA4896-2/ADA4897-1
Min Typ
Max Unit
230 MHz
30 MHz
90 MHz
7 MHz
100 V/μs
45 ns
95 ns
−115
−93
−80
−61
2.4
1
31
2.8
99
dBc
dBc
dBc
dBc
nV/√Hz
nV/√Hz
pA/√Hz
pA/√Hz
nV p-p
−500
−17
−0.6
97
−30
0.2
−11
3
−0.02
110
+500
−4
+0.6
μV
μV/°C
μA
nA/°C
μA
dB
10 M/10 k
3/11
0.1 to 4.1
−91 −118
Ω
pF
V
dB
96
4.85 4.98
0.15 0.014
4.8 4.88
0.2 0.08
70
125
39
ns
V
V
V
mA
mA
pF
3 to 10
2.6 2.8
0.18
−96 −123
−96 −121
V
2.9 mA
dB
dB
Rev. 0 | Page 5 of 28
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
NC 1
–IN 2
+IN 3
–VS 4
ADA4897-1
8 DISABLE
7 +VS
6 OUT
5 NC
NC = NO CONNECT. DO NOT
CONNECT TO THIS PIN.
Figure 6. 8-Lead SOIC Pin Configuration
Table 9. ADA4897-1Pin Function Descriptions
Pin No.
SOIC SOT-23 Mnemonic
Description
1, 5 N/A
NC
Do not connect to this pin.
24
−IN
Inverting Input.
33
+IN
Noninverting Input.
42
−VS
Negative Supply.
61
OUT
Output.
76
+VS
Positive Supply.
85
DISABLE
Disable.
ADA4896-2/ADA4897-1
OUT 1
6 +VS
–VS 2
5 DISABLE
+IN 3 ADA4897-1 4 –IN
Figure 7. 6-Lead SOT-23 Pin Configuration
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Rev. 0 | Page 11 of 28
Datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
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| PDF Descargar | [ Datasheet ADA4896-2.PDF ] | |
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