rf9986 RF Micro Devices, rf9986 Datasheet - Page 3

• Manufacturer Part Number: rf9986
• Description: Pcs Low Noise Amplifier/mixer
• Manufacturer: RF Micro Devices

Rev B1 010717
Pin
10
11
12
13
14
15
16
17
18
19
1
2
3
4
5
6
7
8
9
MIX RF IN
LO BUFF
LO BUFF
Function
LNA IN
GND1
GND2
GND3
GND4
GND5
GND6
GND7
VCC1
VCC2
VCC3
LO IN
OUT
NC
NC
EN
IF+
IF-
Description
No connection. This pin may be grounded (recommended) or left open.
Supply voltage for the mixer and RF buffer amplifier. External RF
bypassing is required. The trace length between the pin and the bypass
capacitor should be minimized. The ground side of the bypass capaci-
tor should connect immediately to ground plane.
Supply voltage for the LNA. External RF bypassing is required. The
trace length between the pin and the bypass capacitor should be mini-
mized. The ground side of the bypass capacitor should connect imme-
diately to ground plane.
Ground connection for the LNA. For best performance, keep traces
physically short and connect immediately to ground plane.
RF Input pin for the LNA. This pin is internally DC-blocked and inter-
nally matched for minimum noise figure (NOT for minimum VSWR),
given a 50
Same as pin 4.
Ground connection for the RF buffer amplifier. For best performance,
keep traces physically short and connect immediately to ground plane.
No connection. This pin may be grounded (recommended) or left open.
Same as pin 7.
Supply voltage for both LO buffer amplifiers. External RF bypassing is
required. The trace length between the pin and the bypass capacitor
should be minimized. The ground side of the bypass capacitor should
connect immediately to ground plane.
Enable pin for the LO output buffer amplifier. This is a digitally con-
trolled input. A logic "high" ( 3.1V) turns the buffer amplifier on, and the
current consumption increases by 3mA (with -2dBm LO input). A logic
"low" ( 0.5V) turns the buffer amplifier off.
Mixer LO input pin. This pin is internally DC-blocked and matched to
50 .
Optional buffered LO output. This pin is internally DC-blocked and
matched to 50 . The buffer amplifier is switched on or off by the volt-
age level at pin 11.
Ground connection for both LO buffer amplifiers. For best performance,
keep traces physically short and connect immediately to ground plane.
Open-collector IF output pin. This is a balanced output. The output
impedance is set by an internal 1000
ferential IF output impedance is 1000 . The resistor sets the operating
impedance, but an external choke or matching inductor to V
supplied in order to bias this output. This inductor is typically incorpo-
rated in the matching network between the output and IF filter. Because
this pin is biased to V
filter input has a DC path to ground.
Same as pin 15, except complementary output.
Ground connection for the mixer. For best performance, keep traces
physically short and connect immediately to ground plane.
Mixer RF Input Pin. This pin is internally DC-blocked and matched to
50 .
Same as pin 17.
source impedance.
CC
, a DC blocking capacitor must be used if the IF
resistor to pin 16. Thus the dif-
CC
must be
Interface Schematic
See pin 15.
BUFF
VCC1
LO
EN
RF9986
IF-
1 k
150
7.5 k
BIAS
IF+
VCC4
8-133
8