ADA4960-1ACPZ-R7 Analog Devices Inc, ADA4960-1ACPZ-R7 Datasheet - Page 14

• Manufacturer Part Number: ADA4960-1ACPZ-R7
• Description: 5GHz Low Distortion ADC Driver/Line Driv
• Manufacturer: Analog Devices Inc
• Type: ADC Driverr

Specifications of ADA4960-1ACPZ-R7

• Applications: Data Acquisition
• Mounting Type: Surface Mount
• Package / Case: 16-LFCSP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ADA4960-1
APPLICATIONS INFORMATION
BASIC CONNECTIONS
The basic connections for operating the ADA4960-1 are shown
in Figure 33. Connect VCC to 5 V and decouple each supply pin
with a low inductance surface-mount ceramic capacitor of 0.1 μF
placed as close to the device as possible.
In addition, decouple the VOCM pin and the VCI pin by using
a 0.1 μF capacitor, whether or not they are used as inputs.
For normal operation, the enable pin (PD) should be tied to VCC.
When the ADA4960-1 is pulled low, it goes into power-down
mode. The VOP and VON outputs are internally biased at VCC/2
with no external source. The output common-mode range can
be adjusted in the range of 1 V to 2.75 V by applying an external
source voltage to the VCOM pin.
INPUT AND OUTPUT INTERFACING
The ADA4960-1 can be configured as a differential-input-to-
differential-output driver, as shown in Figure 31.
The differential broadband input is provided by the ETC1-1-13
balun transformer. The two 25 Ω resistors, R1 and R2, provide
the 50 Ω match to the 50 Ω ac source. The 0.1 μF capacitors,
connected in series with the inputs and outputs, isolate the source
and balanced load from the internal bias. R
resistor. Load R
performance (see the Specifications section). Different loads can be
applied with the gain value described by the gain adjust equation
(see the Gain Adjust section).
L
should equal 100 Ω to provide the expected ac
BALANCED
SOURCE
AC
R
R
2
2
S
S
R
R
2
2
G
S
S
is the gain-setting
0.1µF
0.1µF
Figure 33. Basic Connections of the ADA4960-1
R
G
V
CC
Rev. 0 | Page 14 of 20
1
4
2
3
VIN
VIP
IIN
IIP
NC = NO CONNECT
0.1µF
ADA4960-1
The ADA4960-1 can also be configured as a single-ended-input-
to-differential-output driver, as shown in Figure 32. R1 provides the
input source match, and R2 balances the input source impedances.
The 0.1 μF capacitors, connected in series with the inputs and
outputs, isolate the source and balanced load from the internal bias.
R
the expected ac performance (see the Specifications section).
AC
50Ω
G
is the gain-setting resistor. R
Figure 32. Single-Ended-Input-to-Differential-Output Configuration
AC
50Ω
Figure 31. Differential-Input-to-Differential-Output Configuration
VCC
VOP
VON
VCC
0.1µF
0.1µF
ETC1-1-13
12
11
10
9
V
0.1µF
CC
R1
50Ω
R2
50Ω
25Ω
25Ω
0.1µF
R1
R2
0.1µF
0.1µF
10µF
R
0.1µF
0.1µF
G
R
R
G
VIP
VIN
IIP
IIN
L
L
should equal 100 Ω to provide
V
VIP
VIN
BALANCED
CC
ADA4960-1
IIP
IIN
LOAD
5V
ADA4960-1
5V
VOP
VON
VOP
VON
0.1µF
0.1µF
0.1µF
0.1µF
R
R
2
2
L
L
R
R
2
2
L
L