LMX8410L
www.ti.com.cn
ZHCSHV3A –MARCH 2018–REVISED NOVEMBER 2018
Pin Functions (continued)
PIN
I/O
DESCRIPTION
NAME
NAME
VCO tuning voltage input. If using internal LO, connect the output of the loop filter to this point. If
using external LO, tie this pin to GND.
44
VTUNE
Input
Bypass
Supply
VCO LDO output node. Requires connecting 10-µF capacitor to VCO ground. Place close to pin.
This capacitor must be present even if used in external LO mode.
45
46
VREG_VCO
VCC_VCO
VCO supply. TI recommends connecting 0.1-µF and 100-pF capacitors to VCO ground. This pin
must be connected to VCC, even if using external LO.
VCO LDO reference node. Requires connecting 1-µF capacitor to VCO ground. If using external
LO, this pin should either be floated or configured the same way as internal LO mode.
47
48
49
VREF_VCO
GND
Bypass
Ground
Ground
VCO ground. VCO LDO, LDO reference, and supply bypass capacitors must bypass to this point.
Die attach pad. Internally connected to ground. TI recommends shorting ground pins to this pad
on the same plane, if possible.
PAD
Copyright © 2018, Texas Instruments Incorporated
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