HMC838LP6CE データシートの表示（PDF） - Hittite Microwave
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HMC838LP6CE
Hittite Microwave
HMC838LP6CE Datasheet PDF : 12 Pages
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7
HMC838LP6CE
v02.1010
FRACTIONAL-N SYNTHESIZER WITH INTEGRATED VCO
795 - 945, 1590 - 1890, 3180 - 3780 MHz
Pin Descriptions
Pin Number
Function
Description
1
AVDD
DC Power Supply for analog circuitry.
2, 5, 6, 8, 9,
11 - 14, 18 - 22, 24,
N/C
26, 34, 37, 38
The pins are not connected internally; however, all data shown herein
was measured with these pins connected to RF/DC ground externally.
3
VPPCP
Power Supply for charge pump analog section
4
CP
Charge Pump Output
7
VDDCP
Power Supply for the charge pump digital section
10
RVDD
Reference Supply
15
XREFP
Reference Oscillator Input
16
DVDD3V
DC Power Supply for Digital (CMOS) Circuitry
17
CEN
Chip Enable. Connect to logic high for normal operation.
23
VTUNE
VCO Varactor. Tuning Port Input.
25
VCC2
VCO Analog Supply 2
27
VCC1
28
RF_N [1]
29
RF_P [1]
VCO Analog Supply 1
RF Positive Output
RF Negative Output
30
SEN
PLL Serial Port Enable (CMOS) Logic Input
31
SDI
PLL Serial Port Data (CMOS) Logic Input
32
SCK
PLL Serial Port Clock (CMOS) Logic Input
33
LD_SDO
Lock Detect, or Serial Data, or General Purpose (CMOS) Logic Output (GPO)
35
VCCHF
DC Power Supply for Analog Circuitry
36
VCCPS
DC Power Supply for Analog Prescaler
39
VCCPD
DC Power Supply for Phase Detector
External bypass decoupling for precision bias circuits.
40
BIAS
Note: 1.920V ±20mV reference voltage (BIAS) is generated internally and cannot
drive an external load. Must be measured with 10GΩ meter such as Agilent 34410A,
normal 10MΩ DVM will read erroneously.
[1] For doubler mode of operation, pin 28 (RF_N) and pin 29 (RF_P) outputs must be shorted together.
7-7
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
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