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MAX2248 Datenblatt(PDF) 1 Page - Maxim Integrated Products

Teilenummer MAX2248
Bauteilbeschribung  1.9GHz Power Amplifier
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Hersteller  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX2248 Datenblatt(HTML) 1 Page - Maxim Integrated Products

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General Description
The MAX2248 single-supply, low-voltage power amplifier
(PA) IC is designed specifically for applications in the
1880MHz to 1930MHz frequency band. The PA provides
a +20dBm (100mW) output power in the highest power
mode.
The PA includes a digital power control circuit to greatly
simplify control of the output power. Four digitally
controlled output power levels are provided: from +4dBm
to +20dBm. A digital input controls the active or shutdown
operating modes of the PA. In the shutdown mode, the
current reduces to 0.5µA.
The MAX2248 integrates the RF input and inter-stage
matching to simplify application of the IC. Temperature
and supply-independent biasing are also included to
provide stable performance under all operating conditions.
The IC operates from a +2.7V to +5V single-supply voltage.
No negative bias voltage is required. Current consumption
is a modest 105mA at the highest power level.
This part is packaged in a 3mm x 3mm, 16-pin TQFN.
Ordering Information appears at end of data sheet.
19-100039; Rev 1; 8/17
Benefits and Features
● Frequency Range: 1880MHz–1930MHz
● High +20dBm Output Power
● 2-Bit Digital Power Control: Four Output Levels
● Low 105mA Operating Current
● 0.5μA Low-Power Shutdown Mode Current
● +2.7V to +5V Single-Supply Operation
● Small 3mm x 3mm, 16-Pin TQFN Package
Applications
● 1.9GHz DECT (Cordless Phones and Wireless
Headsets)
Typical Application Circuit/Functional Block Diagram
VBIAS
Z0 = 50
Ω
θ
= 15˚ at 1.9GHz
D0
D1
RFIN
GND
GND
RFOUT
22nH
8pF
OPEN CIRCUIT T2
Z0 = 65
Ω
θ
= 45˚ at 1.9GHz
T1
Z0 = 60
Ω
θ
= 60˚ at 1.9GHz
VCC
VCC
VCC
VCC
BIAS AND POWER
CONTROL
* PLACEMENT OF THESE COMPONENTS IS CRITICAL
(SEE APPLICATIONS SECTION)
1pF
1.5nH
1000pF
1000pF
8.2
Ω
8.2
Ω
1pF
220pF*
18pF*
T0
Z0 = 50
Ω
θ
= 18˚ at 1.9GHz
MAX2248
SHDN
1000pF
8.2
Ω
220pF*
MAX2248
1.9GHz Power Amplifier
EVALUATION KIT AVAILABLE


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