LT5581IDDB-PBF LINER [Linear Technology], LT5581IDDB-PBF Datasheet - Page 9

• Manufacturer Part Number: LT5581IDDB-PBF
• Description: 6GHz RMS Power Detector with 40dB Dynamic Range
• Manufacturer: LINER [Linear Technology]

PIN FUNCTIONS
BLOCK DIAGRAM
V
should be bypassed with a 0.1μF ceramic capacitor.
EN (Pin 2): Chip Enable. A logic low or no-connect on the
enable pin shuts down the part. A logic high enables the
part. An internal 500k pull-down resistor ensures the part is
off when the enable driver is in a three-state condition.
V
GND (Pins 4, 5, 6): Ground.
RF
capacitor; 1000pF recommended. This pin has an internal
200Ω termination.
CC
OUT
IN
(Pin 7): RF Input. Should be DC-blocked with coupling
(Pin 1): Power Supply, 2.7V to 5.25V. V
(Pin 3): Detector Output.
7
LT5581
RF
IN
8
C
SQ
DETECTOR
RMS
2
EN
BIAS
9
EXPOSED
PAD
1
150kHz LPF
V
CC
CC
C
Capacitor. This pin is for frequencies below 250MHz. Use
0.01μF from pin to ground for 10MHz operation.
Exposed Pad (Pin 9): Ground. The Exposed Pad must
be soldered to the PCB. For high frequency oper-
ation, the backside ground connection should have a low
inductance connection to the PCB ground, using many
through-hole vias. See the layout information in the Ap-
plications Information section.
SQ
4
(Pin 8): Optional Low Frequency Range Extension
OUTPUT
BUFFER
5
GND
6
300Ω
V
OUT
5581 BD
3
LT5581
9
5581f