LMX3161VBH National Semiconductor, LMX3161VBH Datasheet - Page 3

• Manufacturer Part Number: LMX3161VBH
• Description: IC TXRX RADIO SNG CHIP 48-LQFP
• Manufacturer: National Semiconductor
• Type: Transceiverr

Specifications of LMX3161VBH

• Voltage - Supply: 3 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Number Of Drivers/receivers: -
• Protocol: -
• Other names: *LMX3161VBH

Pin No.
LMX3161 Pin Diagram
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
1
2
3
4
5
6
7
8
9
Rx PD/OUT 1
Tx PD/OUT 2
DC COMP
MIXER
Pin Name
THRESH
RSSI
DISC
Tx V
S FIELD
QUAD
PLL PD
CLOCK
OUT 0
OSC
Tx
DATA
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
RF
V
V
V
V
V
V
V
V
V
CE
V
D
LE
f
OUT
IN
CC
CC
CC
CC
CC
CC
CC
CC
CC
P
REG
o
IN
OUT
OUT
OUT
IN
IN
IN
I/O
I/O
I/O
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
O
O
O
O
O
O
O
I
I
I
I
I
I
I
I
I
I
I
Power supply for CMOS section of PLL and ESD bussing.
IF output from the mixer.
Power supply for mixer section.
Ground.
RF input to the mixer.
Ground.
Regulated power supply for external PA gain stage.
Power supply for analog sections of PLL and doubler.
Ground.
Frequency doubler output.
Ground.
Power supply for analog sections of PLL and doubler.
Ground.
Ground.
RF Input to PLL and frequency doubler.
Chip Enable. Pulling LOW powers down entire chip. Taking CE HIGH powers up the
appropriate functional blocks depending on the state of bits F6, F7, F11, and F12
programmed in F-latch. It is necessary to initialize the internal registers once, after the
power up reset. The registers’ contents are kept even in power-down condition.
Power supply for charge pump.
Charge pump output. For connection to a loop filter for driving the input of an external VCO.
Power supply for CMOS section of PLL and ESD bussing.
Ground.
Programmable CMOS output. Refer to Function Register Programming Description section
for details.
Receiver power down control input or programmable CMOS output. Refer to Function
Register Programming Description section for details.
Transmitter power down control input or programmable CMOS output. Refer to Function
Register Programming Description section for details.
PLL power down control input. LOW for PLL normal operations, and HIGH for PLL power
saving.
MICROWIRE
MICROWIRE data input. High impedance CMOS input with Schmitt Trigger.
MICROWIRE load enable input. High impedance CMOS input with Schmitt Trigger.
Oscillator input. High impedance CMOS input with feedback.
DC compensation circuit enable. While LOW, the DC compensation circuit is enabled and
the threshold is updated through the DC compensation loop. While HIGH, the switch is
opened, and the comparator threshold is held by the external capacitor.
Received signal strength indicator (RSSI) output.
Threshold level to external comparator.
Input to DC compensation circuit.
Demodulated output of discriminator.
Ground.
Power supply for the discriminator circuit.
Quadrature input for tank circuit.
Power supply for limiter output stage.
Ground.
Power supply for limiter gain stages.
Ground.
Power supply for IF amplifier gain stages.
(Continued)
™
clock input. High impedance CMOS input with Schmitt Trigger.
3
Description
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