Datasheet

Low Cost, High Speed, Rail-to-Rail,
Output Op Amps
ADA4851-1/ADA4851-2/ADA4851-4
Rev. J
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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
PIN CONFIGURATIONS
V
OUT
1
+IN
3
2
ADA4851-1
TOP VIEW (Not to Scale)
–V
S
+V
S
6
–IN
4
5
POWER DOWN
05143-001
Figure 1. ADA4851-1, 6-Lead SOT-23 (RJ-6)
OUT1 1
–IN1
2
+IN1 3
–V
S
4
+V
S
8
OUT
7
–IN2 6
+IN2 5
ADA4851-2
TOP VIEW
(Not to Scale)
05143-058
Figure 2. ADA4851-2, 8-Lead MSOP (RM-8)
1
2
3
4
5
6
7
ADA4851-4
TOP VIEW
(Not to Scale)
–IN 1
+IN 1
+V
S
V
OUT
2
–IN 2
+IN 2
V
OUT
1
14
13
12
11
10
9
8
–IN 4
+IN 4
–V
S
V
OUT
3
–IN 3
+IN 3
V
OUT
4
05143-054
Figure 3. ADA4851-4, 14-Lead TSSOP (RU-14)
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.
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).
CLOSED-LOOP GAIN (dB)
1 10010 1k
05143-004
FREQUENCY (MHz)
–6
–4
–5
–2
–3
0
–1
2
1
4
3
G = +1
V
S
= 5V
R
L
= 1kΩ
C
L
= 5pF
Figure 4. Small-Signal Frequency Response