LTC4401-1ES6#TR Linear Technology, LTC4401-1ES6#TR Datasheet - Page 4

• Manufacturer Part Number: LTC4401-1ES6#TR
• Description: IC RF POWER CONTROLLER TSOT23-6
• Manufacturer: Linear Technology

Specifications of LTC4401-1ES6#TR

• Rf Type: Cellular, GSM, GPRS, PCS, Wireless Modem, TDMA
• Frequency: 300MHz ~ 2.7GHz
• Features: Single Output
• Package / Case: TSOT-23-6, TSOT-6
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: LTC4401-1ES6TR; LTC44011ES6TR

LTC4401-1/LTC4401-2
TYPICAL PERFOR A CE CHARACTERISTICS
PI FU CTIO S
4
RF (Pins 1/8): RF Feedback Voltage from the Directional
Coupler. Referenced to V
must be used to connect to the ground referenced direc-
tional coupler. The frequency range is 300MHz to 2700MHz
for the LTC4401-1 and 300MHz to 2000MHz for the
LTC4401-2. This pin has an internal 250 termination, an
internal Schottky diode detector and peak detector capaci-
tor.
GND (Pins 2/4): System Ground.
PCTL (Pins 3/5): Analog Input. The external power control
DAC drives this input. The amplifier servos the RF power
until the RF detected signal equals the DAC signal. The
input impedance is typically 90k .
V
Output. This pin drives an external RF power amplifier
power control pin. The maximum load capacitance is
100pF.
PCB
10000
1000
U
100
10
1
(Pin 3): (LTC4401-2 Only) Power Control Voltage
–22
LTC4401-1 Detector Characteristics
at 2700MHz
–18 –14
U
75 C
25 C
–30 C
RF INPUT POWER (dBm)
–10 –6 –2
U
CC
2
(LTC4401-1/LTC4401-2)
. A coupling capacitor of 33pF
W
6
10 14
4401 G04
U
10000
1000
100
10
1
–28
LTC4401-2 Detector Characteristics
at 900MHz
–22
75 C
25 C
–30 C
–16
RF INPUT POWER (dBm)
–10
SHDN (Pins 4/6): Shutdown Input. A logic low on the SHDN
pin places the part in shutdown mode. A logic high places
the part in enable mode. SHDN has an internal 150k pull-
down resistor to ensure that the part is in shutdown when
the drivers are in a three-state condition.
V
drives an external RF power amplifier power control pin.
The maximum load capacitance is 100pF.
V
should be bypassed with 0.1 F and 100pF ceramic capaci-
tors. Used as return for RF 250 termination.
BSEL (Pin 7): (LTC4401-2 Only) Selects V
and V
resistor to ground.
–4
PCA
CC
(Pins 6/1): Input Supply Voltage, 2.7V to 6V. V
2
(Pins 5/2): Power Control Voltage Output. This pin
PCB
8
when High. This input has an internal 150k
4401 G05
14
10000
1000
100
10
1
–26
LTC4401-2 Detector Characteristics
at 1800MHz
–20
75 C
25 C
–30 C
RF INPUT POWER (dBm)
–14
–8
–2
PCA
4
when Low
10
4401 G06
4401fa
16
CC