Datenblatt-pdf.com


AD847 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer AD847
Beschreibung High Speed/ Low Power Monolithic Op Amp
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 12 Seiten
AD847 Datasheet, Funktion
a
FEATURES
Superior Performance
High Unity Gain BW: 50 MHz
Low Supply Current: 5.3 mA
High Slew Rate: 300 V/s
Excellent Video Specifications
0.04% Differential Gain (NTSC and PAL)
0.19؇ Differential Phase (NTSC and PAL)
Drives Any Capacitive Load
Fast Settling Time to 0.1% (10 V Step): 65 ns
Excellent DC Performance
High Open-Loop Gain 5.5 V/mV (RLOAD = 1 k)
Low Input Offset Voltage: 0.5 mV
Specified for ؎5 V and ؎15 V Operation
Available in a Wide Variety of Options
Plastic DIP and SOIC Packages
Cerdip Package
Die Form
MIL-STD-883B Processing
Tape & Reel (EIA-481A Standard)
Dual Version Available: AD827 (8 Lead)
Enhanced Replacement for LM6361
Replacement for HA2544, HA2520/2/5 and EL2020
APPLICATIONS
Video Instrumentation
Imaging Equipment
Copiers, Fax, Scanners, Cameras
High Speed Cable Driver
High Speed DAC and Flash ADC Buffers
PRODUCT DESCRIPTION
The AD847 represents a breakthrough in high speed amplifiers
offering superior ac & dc performance and low power, all at low
cost. The excellent dc performance is demonstrated by its ± 5 V
6
High Speed, Low Power
Monolithic Op Amp
AD847
CONNECTION DIAGRAM
Plastic DIP (N),
Small Outline (R) and
Cerdip (Q) Packages
specifications which include an open-loop gain of 3500 V/V
(500 load) and low input offset voltage of 0.5 mV. Common-
mode rejection is a minimum of 78 dB. Output voltage swing is
± 3 V into loads as low as 150 . Analog Devices also offers
over 30 other high speed amplifiers from the low noise AD829
(1.7 nV/Hz) to the ultimate video amplifier, the AD811, which
features 0.01% differential gain and 0.01° differential phase.
APPLICATION HIGHLIGHTS
1. As a buffer the AD847 offers a full-power bandwidth of
12.7 MHz (5 V p-p with ± 5 V supplies) making it outstand-
ing as an input buffer for flash A/D converters.
2. The low power and small outline package of the AD847
make it very well suited for high density applications such as
multiple pole active filters.
3. The AD847 is internally compensated for unity gain opera-
tion and remains stable when driving any capacitive load.
5.5
5
4.5
4
0 5 10 15 20
SUPPLY VOLTAGE – ± Volts
Quiescent Current vs. Supply Voltage
REV. F
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
AD847 Driving Capacitive Loads
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703






AD847 Datasheet, Funktion
AD847–Typical Characteristics (@ +25؇C and VS = ؎15 V, unless otherwise noted)
7 35
6 30
5 25
4
VS = ± 5V
3
–60 –40 –20
0 20 40 60 80
TEMPERATURE – °C
100 120 140
Figure 7. Quiescent Current vs. Temperature
52
51
50
49
48
–60 –40 –20
0 20 40 60 80 100 120 140
TEMPERATURE – °C
Figure 9. Gain Bandwidth Product vs. Temperature
80
75 VS = ±15V
70
VS = ± 5V
65
60
55
50
10
100 1k
LOAD RESISTANCE –
10k
Figure 11. Open-Loop Gain vs. Load Resistance
20
15
–60 –40 –20 0 20 40 60 80 100 120 140
AMBIENT TEMPERATURE – °C
Figure 8. Short-Circuit Current Limit vs. Temperature
100 +100°
80
±15V SUPPLIES
1kLOAD
60
±5V SUPPLIES
500LOAD
40
+80°
+60°
+40°
20 +20°
00
–20
100
1k
10k 100k
1M
10M
100M
FREQUENCY – Hz
Figure 10. Open-Loop Gain and Phase Margin
vs. Frequency
100
+SUPPLY
80
60
–SUPPLY
40
20
0
1k
10k 100k
1M
10M
100M
FREQUENCY – Hz
Figure 12. Power Supply Rejection vs. Frequency
–6– REV. F

6 Page









AD847 pdf, datenblatt
AD847
HIGH SPEED DAC BUFFER
The wide bandwidth and fast settling time of the AD847 makes
it a very good output buffer for high speed current-output D/A
converters like the AD668. As shown in Figure 27, the op amp
establishes a summing node at ground for the DAC output. The
output voltage is determined by the amplifier’s feedback resistor
(10.24 V for a 1 kresistor). Note that since the DAC gener-
ates a positive current to ground, the voltage at the amplifier
output will be negative. A 100 series resistor between the
noninverting amplifier input and ground minimizes the offset
effects of op amp input bias currents.
+15V
10µF
1 MSB
VCC 24
2 REFCOM 23
3 REFIN1 22
0.1µF
TO ANALOG
GROUND PLANE
1V NOMINAL
+ REFERENCE INPUT
4 REFIN2 21
5 I OUT 20
DIGITAL
AD668
INPUTS 6
RLOAD 19
7 ACOM 18
8 LCOM 17
9 IBPO 16
10 VEE 15
11 THCOM 14
12 LSB
VTH 13
10k
1k
100
AD847
ANALOG GROUND PLANE
0.1µF
10µF
–15V
ANALOG
OUTPUT
ANALOG
SUPPLY
GROUND
100pF
1k
+5V
Figure 27. High Speed DAC Buffer
Mini-DIP (N-8) Package
8
PIN 1
1
5
0.25
(6.35) 0.31
(7.87)
4
0.39 (9.91) MAX
0.165±0.01
(4.19±0.25)
0.035±0.01
(0.89±0.25)
0.125
(3.18)
MIN
0.18±0.03
(4.57±0.76)
0.018±0.003 0.10
(0.46±0.08) (2.54)
BSC
0.033
(0.84)
NOM
0.30 (7.62)
REF
SEATING
PLANE
0.011±0.003
(0.28±0.08)
15°
0°
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
Cerdip (Q-8) Package
0.005 (0.13) MIN
0.055 (1.40) MAX
8
PIN 1
1
5
0.310 (7.87)
0.220 (5.59)
4
0.200
(5.08)
MAX
0.200 (5.08)
0.125 (3.18)
0.405 (10.29) MAX
0.060 (1.52)
0.015 (0.38)
0.150
(3.81)
MIN
0.023 (0.58) 0.100 0.070 (1.78)
0.014 (0.36) (2.54) 0.030 (0.76)
BSC
0.320 (8.13)
0.290 (7.37)
SEATING
PLANE
0.015 (0.38)
0.008 (0.20)
15°
0°
Small Outline (R-8) Package
0.150 (3.81)
0.244 (6.20)
0.228 (5.79)
PIN 1
8
1
5
0.157 (3.99)
0.150 (3.81)
4
0.010 (0.25)
0.004 (0.10)
0.197 (5.01)
0.189 (4.80)
0.102 (2.59)
0.094 (2.39)
0.050
(1.27)
BSC
0.019 (0.48)
0.014 (0.36)
0.020 (0.051) x 45°
CHAMF
0.190 (4.82)
8° 0.170 (4.32)
0°
0.090
(2.29)
0.098 (0.2482)
0.075 (0.1905)
10°
0°
0.030 (0.76)
0.018 (0.46)
All brand or product names mentioned are trademarks or registered trademarks of their respective holders.
–12–
REV. F

12 Page





SeitenGesamt 12 Seiten
PDF Download[ AD847 Schematic.PDF ]

Link teilen




Besondere Datenblatt

TeilenummerBeschreibungHersteller
AD840Fast Settling Op AmpAnalog Devices
Analog Devices
AD84001-/2-/4-Channel Digital PotentiometersAnalog Devices
Analog Devices
AD84018-Bit/ 4-Channel Data Acquisition SystemAnalog Devices
Analog Devices
AD84022-Channel/ 256-Position Digital PotentiometerAnalog Devices
Analog Devices
AD84032-Channel/ 256-Position Digital PotentiometerAnalog Devices
Analog Devices

TeilenummerBeschreibungHersteller
CD40175BC

Hex D-Type Flip-Flop / Quad D-Type Flip-Flop.

Fairchild Semiconductor
Fairchild Semiconductor
KTD1146

EPITAXIAL PLANAR NPN TRANSISTOR.

KEC
KEC


www.Datenblatt-PDF.com       |      2020       |      Kontakt     |      Suche