AD817AR Analog Devices Inc, AD817AR Datasheet - Page 12

• Manufacturer Part Number: AD817AR
• Description: IC OPAMP HS LP 8-SOIC
• Manufacturer: Analog Devices Inc

Specifications of AD817AR

• Slew Rate: 350 V/µs
• Mounting Type: Surface Mount
• Rohs Status: RoHS non-compliant
• Applications: General Purpose
• Number Of Circuits: 1
• -3db Bandwidth: 50MHz
• Current - Supply: 7mA
• Current - Output / Channel: 50mA
• Voltage - Supply, Single/dual (±): 5 V ~ 36 V, ±2.5 V ~ 18 V
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• No. Of Amplifiers: 1
• Bandwidth: 50MHz
• No. Of Pins: 8
• Settling Time: 70ns
• Operating Temperature Max: 85°C
• Peak Reflow Compatible (260 C): No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

AD817
HIGH SPEED DAC BUFFER
The wide bandwidth and fast settling time of the AD817 make
it a very good output buffer for high speed current output D/A
converters like the AD668. As shown in Figure 38, the op amp
establishes a summing node at ground for the DAC output. The
output voltage is determined by the amplifier’s feedback resistor
(4.19 0.25)
0.165 0.01
(3.18)
0.125
PIN 1
MIN
0.018 0.003
(0.46 0.08)
8
1
0.39 (9.91) MAX
8-Pin Plastic Mini-DIP
(2.54)
0.10
BSC
0.033
(0.84)
NOM
4
5
(N-8)
0.035 0.01
(0.89 0.25)
(6.35)
0.25
SEATING
PLANE
0.18 0.03
(4.57 0.76)
DIGITAL
INPUTS
(7.87)
0.31
10
11
12
1
2
3
4
5
9
6
7
8
MSB
LSB
AD668
0.011 0.003
0.30 (7.62)
15
(0.28 0.08)
0
REF
Figure 38. High Speed DAC Buffer
REFCOM
Dimensions shown in inches and (mm).
REFIN2
THCOM
REFIN1
R
ACOM
LCOM
IBPO
LOAD
I
VTH
V
OUT
OUTLINE DIMENSIONS
V
CC
EE
23
20
24
22
21
19
18
17
16
15
14
13
+15V
–12–
10 F
0.1 F
100pF
ANALOG GROUND PLANE
0.1 F
100
(10.24 V for a 1 k resistor). Note that since the DAC gener-
ates a positive current to ground, the voltage at the amplifier
output will be negative. A 100
noninverting amplifier input and ground minimizes the offset
effects of op amp input bias currents.
10k
TO ANALOG
GROUND PLANE
1k
0.0098 (0.25)
0.0040 (0.10)
10 F
PIN 1
1k
AD817
+5V
–15V
1V NOMINAL
REFERENCE INPUT
0.0500
(1.27)
8
1
BSC
0.1968 (5.00)
0.1890 (4.80)
0.0192 (0.49)
0.0138 (0.35)
ANALOG
SUPPLY
GROUND
ANALOG
OUTPUT
5
4
8-Pin SOIC
0.0688 (1.75)
0.0532 (1.35)
0.1574 (4.00)
0.1497 (3.80)
(SO-8)
0.2440 (6.20)
0.2284 (5.80)
series resistor between the
0.0098 (0.25)
0.0075 (0.19)
8
0
0.0196 (0.50)
0.0099 (0.25)
0.0500 (1.27)
0.0160 (0.41)
x 45
REV. B