AD8004 Analog Devices, AD8004 Datasheet - Page 12

• Manufacturer Part Number: AD8004
• Manufacturer: Analog Devices

Specifications of AD8004

• -3db Bandwidth: 250MHz
• Slew Rate: 3kV/µs
• Vos: 1mV
• Ib: 35µA
• # Opamps Per Pkg: 4
• Input Noise (nv/rthz): 1.5nV/rtHz
• Vcc-vee: 4V to 12V
• Isy Per Amplifier: 4.25mA
• Packages: DIP,SOIC

Gain
AD8004 (DIP)
PACKAGE TYPE
Small Signal BW
Peaking @ ± 5 V
0.1 dB Flatness
Small Signal BW
AD8004 (SOIC)
PACKAGE TYPE
Small Signal BW
Peaking @ ± 5 V
0.1 dB Flatness
Small Signal BW
NOTES
1
2
AD8004
The PCB should have a ground plane covering all unused portions
of the component side of the board to provide a low impedance
ground path. The ground plane should be removed from the
area near the input pins to reduce stray capacitance.
Chip capacitors should be used for supply bypassing (see
Figure 13). One end should be connected to the ground plane and
the other within 1/8" of each power pin. An additional (4.7 µF to
10 µF) tantalum electrolytic capacitor should be connected in
parallel.
The feedback resistor should be located close to the inverting
input pin in order to keep the stray capacitance at this node to a
minimum. Capacitance greater than 1 pF at the inverting input
will significantly affect high speed performance when operating
at low noninverting gains. An example of extra inverting input
capacitance can be seen on the plot of Figure 10.
Stripline design techniques should be used for long signal traces
(greater than about 1"). These should be designed with the
proper system characteristic impedance and be properly termi-
nated at each end.
Resistor values listed are standard 1% tolerance.
R
T
R
R
R
@ ± 5 V
@ ± 5 V
@ +5 V
R
R
R
@ ± 5 V
@ ± 5 V
@ +5 V
chosen for 50 Ω characteristic input impedance.
F
G
T
F
G
T
2
2
(Ω)
(Ω)
(Ω)
(Ω)
(Ω)
(Ω)
S
S
S
S
S
S
(MHz)
(MHz)
(MHz)
(MHz)
(MHz)
(MHz)
S
S
–10
499
49.9
None
155
< 0.3 dB
135
499
49.9
None
155
< 0.7 dB
135
Table I. Recommended Component Values
–2
698
348
57.6
125
None
25
105
698
348
57.6
130
< 0.1 dB
35
115
Alternate
–2
499
249
61.9
180
0.3 dB
155
499
249
61.9
190
0.5 dB
175
–1
649
649
53.6
135
None
30
120
750
750
53.6
125
None
25
110
–12–
Alternate
–1
499
499
54.9
190
0.3 dB
160
499
499
54.9
195
0.4 dB
165
Figure 13. Inverting and Noninverting Configurations
V
V
1
IN
IN
and Typical Bandwidths
+1
1.21 k
50
150
1.3 dB
130
1.10 k
50
150
1.3 dB
130
R
T
R
NONINVERTING CONFIGURATION
G
R
G
R
INVERTING CONFIGURATION
Alternate
+1
806
50
250
1.7 dB
200
698
50
225
1.8 dB
195
T
1/4
1/4
R
R
F
F
+2
1.10 k
1.10 k
50
115
< 0.14 dB
35
95
1.10 k
1.10 k
50
110
< 0.1 dB
30
95
C1
0.1 F
C2
0.1 F
C1
0.1 F
C2
0.1 F
R
R
BT
BT
, 50
, 50
C3
10 F
C3
10 F
C4
10 F
C4
10 F
Alternate
+2
698
698
50
185
0.4 dB
150
604
604
50
175
0.5 dB
155
V
V
+V
–V
+V
–V
OUT
OUT
S
S
S
S
+10
499
54.9
50
135
< 0.3 dB
120
499
54.9
50
135
< 0.2 dB
120
REV. C