AD8370AREZ Analog Devices Inc, AD8370AREZ Datasheet - Page 22

• Manufacturer Part Number: AD8370AREZ
• Description: IC AMP VGA DIFF LN 16TSSOP
• Manufacturer: Analog Devices Inc
• Type: Var Gain Ampr

Specifications of AD8370AREZ

• Amplifier Type: Variable Gain
• Number Of Circuits: 1
• Output Type: Differential
• Slew Rate: 5750 V/ns
• -3db Bandwidth: 750MHz
• Current - Input Bias: 400pA
• Current - Supply: 79mA
• Voltage - Supply, Single/dual (±): 3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP Exposed Pad, 16-eTSSOP, 16-HTSSOP
• No. Of Amplifiers: 1
• Bandwidth: 750MHz
• No. Of Channels: 1
• Supply Voltage Range: 3V To 5.5V
• Amplifier Case Style: TSSOP
• No. Of Pins: 16
• Operating Temperature Range: -40°C To +85°C
• Number Of Channels: 1
• Number Of Elements: 2
• Power Supply Requirement: Single
• Common Mode Rejection Ratio: 77dB
• Voltage Gain Db: 34dB
• Input Resistance: 0.0002@5VMohm
• Input Bias Current: 0.9@5VnA
• Single Supply Voltage (typ): 5V
• Dual Supply Voltage (typ): Not RequiredV
• Power Dissipation: 575mW
• Rail/rail I/o Type: No
• Single Supply Voltage (min): 3V
• Single Supply Voltage (max): 5.5V
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 16
• Package Type: TSSOP EP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output / Channel: -
• Gain Bandwidth Product: -
• Voltage - Input Offset: -
• Lead Free Status / Rohs Status: Compliant

AD8370
EVALUATION BOARD AND SOFTWARE
The evaluation board allows quick testing of the AD8370 by
using standard 50 Ω test equipment. The schematic is shown in
Figure 59. Transformers T1 and T2 are used to transform 50 Ω
source and load impedances to the desired input and output
reference levels. The top and bottom layers are shown in
Figure 63 and Figure 64. The ground plane was removed under
the traces between T1 and Pins INHI and INLO to approximate
a 100 Ω characteristic impedance.
IN+
IN–
50Ω Tx LINE
50Ω Tx LINE
PWUP
VOCM
R8 49.9Ω
C10 OPEN
TC4-1W
R1
0Ω
P2
1:4
T1
1
1
Figure 59. AD8370 Evaluation Board Schematic
14
1nF
1nF
C1
C2
R2
0Ω
2
2
R9
OPEN
15
0.1μF
16
3
3
1
AD8370
C5
16
SW1
15
4
2
1kΩ
4
R7
17
V
Rev. A | Page 22 of 28
S
14
5
3
1kΩ
5
R6
18
0.1μF
13
6
4
C7
1kΩ
R5
19
12
7
5
20
D-SUB 25 PIN MALE
C9
11
8
6
21
GND
C6
1μF
The evaluation board comes with the AD8370 control software
that allows serial gain control from most computers. The
evaluation board is connected via a cable to the parallel port of
the computer. Adjusting the appropriate slider bar in the control
software automatically updates the gain code of the AD8370 in
either a linear or linear-in-dB fashion.
10
OPEN
7
9
C8
0.1μF
*EMI SUPPRESSION FERRITE
HZ1206E601R-00
22
10
9
8
23
1nF
1nF
C3
C4
11
R4
0Ω
L1*
+V
GND
24
S
12
25
2:1
T2
L2*
13
JTX-2-10T
R3
0Ω
50Ω Tx LINE
50Ω Tx LINE
OUT+
OUT–