ADA4898-1_15 Datasheet, PDF (1/20 Pages) Analog Devices – High Voltage, Low Noise, Low Distortion, Unity-Gain Stable, High Speed Op Amp

Data Sheet
High Voltage, Low Noise, Low Distortion,
Unity-Gain Stable, High Speed Op Amp
ADA4898-1/ADA4898-2
FEATURES
Ultralow noise
0.9 nV/√Hz
2.4 pA/√Hz
1.2 nV/√Hz at 10 Hz
Ultralow distortion: −93 dBc at 500 kHz
Wide supply voltage range: ±5 V to ±16 V
High speed
−3 dB bandwidth: 65 MHz (G = +1)
Slew rate: 55 V/µs
Unity gain stable
Low input offset voltage: 160 µV maximum
Low input offset voltage drift: 1 μV/°C
Low input bias current: −0.1 µA
Low input bias current drift: 2 nA/°C
Supply current: 8 mA
Power-down feature for single 8-lead package
APPLICATIONS
Instrumentation
Active filters
DAC buffers
SAR ADC drivers
Optoelectronics
GENERAL DESCRIPTION
The ADA4898-1/ADA4898-2 are ultralow noise and distortion,
unity gain stable, voltage feedback op amps that are ideal for use in
16-bit and 18-bit systems with power supplies from ±5 V to
±16 V. The ADA4898-1/ADA4898-2 feature a linear, low noise
input stage and internal compensation that achieves high slew rates
and low noise.
With the wide supply voltage range, low offset voltage, and wide
bandwidth, the ADA4898-1/ADA4898-2 are extremely versatile,
and feature a cancellation circuit that reduces input bias current.
The ADA4898-1/ADA4898-2 are available in an 8-lead SOIC
package that features an exposed metal paddle to improve power
dissipation and heat transfer to the negative supply plane. This
EPAD offers a significant thermal relief over traditional plastic
packages. The ADA4898-1/ADA4898-2 are rated to work over
the extended industrial temperature range of −40°C to +105°C.
CONNECTION DIAGRAM
ADA4898-1
TOP VIEW
(Not to Scale)
NC 1
–IN 2
+IN 3
–V_S 4
8 PD
7 +V_S
6 V_OUT
5 NC
NC = NO CONNECT
Figure 1. Single 8-Lead ADA4898-1 SOIC_N_EP (RD-8-1)
ADA4898-2
TOP VIEW
(Not to Scale)
V_OUT1 1
8 +V_S
–IN1 2
7 V_OUT2
+IN1 3
6 –IN2
–V_S 4
5 +IN2
Figure 2. Dual 8-Lead ADA4898-2 SOIC_N_EP (RD-8-2)
10
10
CURRENT
1
VOLTAGE
1
0.1
1
0.1
10
100
1k
10k
100k
FREQUENCY (Hz)
Figure 3. Input Voltage Noise and Current Noise vs. Frequency
Rev. E
Document Feedback
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.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] ©2008–2015 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com