Low Cost, High Speed, Rail-to-Rail,
Output Op Amps
ADA4851-1/ADA4851-2/ADA4851-4
FEATURES
PIN CONFIGURATIONS
Qualified for automotive applications
High speed
130 MHz, −3 dB bandwidth
375 V/μs slew rate
ADA4851-1
V
1
2
3
6
5
4
+V
S
OUT
–V
POWER DOWN
–IN
S
+IN
55 ns settling time to 0.1%
Excellent video specifications
0.1 dB flatness: 11 MHz
Differential gain: 0.08%
Differential phase: 0.09°
TOP VIEW (Not to Scale)
Figure 1. ADA4851-1, 6-Lead SOT-23 (RJ-6)
ADA4851-2
OUT1
–IN1
+IN1
1
2
3
4
8
7
6
5
+V
S
OUT
–IN2
+IN2
Fully specified at +3 V, +5 V, and 5 V supplies
Rail-to-rail output
–V
S
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
TOP VIEW
(Not to Scale)
Figure 2. ADA4851-2, 8-Lead MSOP (RM-8)
1
2
3
4
5
6
7
14
13
12
11
V
1
V
4
OUT
OUT
–IN 4
+IN 4
–IN 1
+IN 1
Available in space-saving packages
6-lead SOT-23, 8-lead MSOP, and 14-lead TSSOP
ADA4851-4
TOP VIEW
(Not to Scale)
–V
S
+V
S
APPLICATIONS
10 +IN 3
+IN 2
–IN 2
Automotive infotainment systems
Automotive driver assistance systems
Consumer video
9
8
–IN 3
V
3
V
2
OUT
OUT
Professional video
Video switchers
Figure 3. ADA4851-4, 14-Lead TSSOP (RU-14)
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.
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
V
R
C
= 5V
= 1kΩ
= 5pF
3
2
S
L
L
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.
1
0
–1
–2
–3
–4
–5
–6
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.
1
10
100
1k
FREQUENCY (MHz)
The ADA4851-1W, ADA4851-2W, and ADA4851-4W are
automotive grade versions, qualified for automotive applications.
Figure 4. Small-Signal Frequency Response
Rev. J
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