AD8002ARZ-R7 Analog Devices Inc, AD8002ARZ-R7 Datasheet - Page 12

• Manufacturer Part Number: AD8002ARZ-R7
• Description: IC,Operational Amplifier,DUAL,BIPOLAR,SOP,8PIN,PLASTIC
• Manufacturer: Analog Devices Inc

Specifications of AD8002ARZ-R7

• Amplifier Type: Current Feedback
• Number Of Circuits: 2
• Slew Rate: 1200 V/µs
• -3db Bandwidth: 600MHz
• Current - Input Bias: 5µA
• Voltage - Input Offset: 2000µV
• Current - Supply: 10mA
• Current - Output / Channel: 70mA
• Voltage - Supply, Single/dual (±): ±3 V ~ 6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Output Type: -
• Gain Bandwidth Product: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD8002
Driving A-to-D Converters
The AD8002 is well suited for driving high-speed analog-to-
digital converters such as the AD9058. The AD9058 is a dual
8-bit 50 MSPS ADC. In Figure 10, the AD8002 is shown driv-
ing the inputs of the AD9058 which are configured for 0 V to 2 V
ranges. Bipolar input signals are buffered, amplified (–2×), and
offset (by 1.0 V) into the proper input range of the ADC. Using
ANALOG
ANALOG
0.5V
0.5V
IN B
IN A
0.1 F
274
274
1.1k
1.1k
–2V
RZ1, RZ2 = 2,000
50
50
549
AD8002
AD8002
20k
1/2
1/2
549
SIP (8-PKG)
AD707
20k
0.1 F
20
20
ENCODE
0.1 F
40
38
43
6
2
3
1
8
–V
–V
A
A
+V
+V
+V
COMP
ENCODE A
IN B
IN A
REF A
REF B
INT
REF A
REF B
4,19, 21
10
AD9058
(J-LEAD)
the AD9058’s internal 2 V reference connected to both ADCs
as shown in Figure 10 reduces the number of external compo-
nents required to create a complete data acquisition system. The
20 Ω resistors in series with ADC inputs are used to help the
AD8002s drive the 10 pF ADC input capacitance. The AD8002
adds only 100 mW to the power consumption, while not limit-
ing the performance of the circuit.
25, 27, 42
ENCODE B
36
D
D
D
D
7A
7B
0A
0B
(LSB)
(MSB)
(LSB)
(MSB)
+V
–V
S
S
50
5, 9, 22,
24, 37, 41
18
17
16
15
14
13
12
11
28
29
30
31
32
33
34
35
7, 20,
26, 39
0.1 F
74ACT04
0.1 F
1N4001
RZ1
RZ2
–5V
1k
+5V
10pF
CLOCK
8
8