ADA4851-2_15 Datasheet, PDF (1/25 Pages) Analog Devices – Low Cost, High Speed, Rail-to-Rail, Output Op Amps

Low Cost, High Speed, Rail-to-Rail,
Output Op Amps
ADA4851-1/ADA4851-2/ADA4851-4
FEATURES
Qualified for automotive applications
High speed
130 MHz, −3 dB bandwidth
375 V/μs slew rate
55 ns settling time to 0.1%
Excellent video specifications
0.1 dB flatness: 11 MHz
Differential gain: 0.08%
Differential phase: 0.09°
Fully specified at +3 V, +5 V, and ±5 V supplies
Rail-to-rail output
Output swings to within 60 mV of either rail
Low voltage offset: 0.6 mV
Wide supply range: 2.7 V to 12 V
Low power: 2.5 mA per amplifier
Power-down mode
Available in space-saving packages
6-lead SOT-23, 8-lead MSOP, and 14-lead TSSOP
APPLICATIONS
Automotive infotainment systems
Automotive driver assistance systems
Consumer video
Professional video
Video switchers
Active filters
Clock buffers
GENERAL DESCRIPTION
The ADA4851-1 (single), ADA4851-2 (dual), and ADA4851-4
(quad) are low cost, high speed, voltage feedback rail-to-rail
output op amps. Despite their low price, these parts provide
excellent overall performance and versatility. The 130 MHz,
−3 dB bandwidth and high slew rate make these amplifiers well
suited for many general-purpose, high speed applications.
The ADA4851 family is designed to operate at supply voltages
as low as +3 V and up to ±5 V. These parts provide true single-
supply capability, allowing input signals to extend 200 mV
below the negative rail and to within 2.2 V of the positive rail.
On the output, the amplifiers can swing within 60 mV of either
supply rail.
With their combination of low price, excellent differential gain
(0.08%), differential phase (0.09º), and 0.1 dB flatness out to
11 MHz, these amplifiers are ideal for consumer video applications.
The ADA4851-1W, ADA4851-2W, and ADA4851-4W are
automotive grade versions, qualified for automotive applications.
Rev. J
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rights of third parties that may result from its use. Specifications subject to change without notice. No
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PIN CONFIGURATIONS
ADA4851-1
V_OUT 1
6 +V_S
–V_S 2
5 POWER DOWN
+IN 3
4 –IN
TOP VIEW (Not to Scale)
Figure 1. ADA4851-1, 6-Lead SOT-23 (RJ-6)
ADA4851-2
OUT1 1
–IN1 2
+IN1 3
–V_S 4
8 +V_S
7 OUT
6 –IN2
5 +IN2
TOP VIEW
(Not to Scale)
Figure 2. ADA4851-2, 8-Lead MSOP (RM-8)
V_OUT 1 1
–IN 1 2
+IN 1 3
+V_S 4
+IN 2 5
–IN 2 6
V_OUT 2 7
ADA4851-4
TOP VIEW
(Not to Scale)
14 V_OUT 4
13 –IN 4
12 +IN 4
11 –V_S
10 +IN 3
9 –IN 3
8 V_OUT 3
Figure 3. ADA4851-4, 14-Lead TSSOP (RU-14)
See the Automotive Products section for more details. The
ADA4851 family is designed to work over the extended
temperature range (−40°C to +125°C).
4
G = +1
3 VS = 5V
R_L = 1kΩ
2 CL = 5pF
1
0
–1
–2
–3
–4
–5
–6
1
10
100
1k
FREQUENCY (MHz)
Figure 4. Small-Signal Frequency Response
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