MAX2055EUP+D Maxim Integrated Products, MAX2055EUP+D Datasheet - Page 12

• Manufacturer Part Number: MAX2055EUP+D
• Description: RF Mixer IC ADC DRVR/AMP VAR GAIN
• Manufacturer: Maxim Integrated Products

Specifications of MAX2055EUP+D

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Digitally Controlled, Variable-Gain, Differential
ADC Driver/Amplifier
package. This pad should be connected to the ground
plane of the board by using multiple vias under the
device to provide the best RF/thermal conduction path.
Solder the exposed pad on the bottom of the device
package to a PC board exposed pad.
The MAX2055 Evaluation Kit can be used as a refer-
ence for board layout. Gerber files are available upon
request at www.maxim-ic.com.
Proper voltage-supply bypassing is essential for high-
frequency circuit stability. Bypass each V
1000pF and 100pF capacitor. Connect the 100pF
capacitor as close to the device as possible. Resistor
R7 helps reduce switching transients. If switching tran-
sients are not a concern, R7 is not required. Therefore,
connect pin 9 directly to V
The EP of the MAX2055’s 20-pin TSSOP-EP package
provides a low thermal-resistance path to the die. It is
important that the PC board on which the IC is mounted
be designed to conduct heat from this contact. In addi-
tion, the EP provides a low-inductance RF ground path
for the device.
It is recommended that the EP be soldered to a ground
plane on the PC board, either directly or through an
array of plated via holes.
Soldering the pad to ground is also critical for efficient
heat transfer. Use a solid ground plane wherever
possible.
TRANSISTOR COUNT: 325
PROCESS: BiCMOS
12
______________________________________________________________________________________
Exposed Paddle RF Thermal
Power-Supply Bypassing
CC
Chip Information
.
Considerations
CC
pin with a
Table 3. Attenuation Setting vs. Gain-
Control Bits
* Enabling B4 disables B3 and the minimum attenuation is
16dB.
ATTENUATION
10
11
12
13
14
15
16
17
18
19
20
21
22
23
0
1
2
3
4
5
6
7
8
9
B4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
B3*
X
X
X
X
X
X
X
X
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
B2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
B1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
B0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1