Complete Dual-Band
Quadrature Transmitter
8 _______________________________________________________________________________________
Pin Description (continued)
PIN
FUNCTION
23, 24
Differential Q-Channel Baseband Inputs to the Modulator. These pins go directly to the bases of
a differential pair and require an external common-mode bias voltage.
22
Supply for the I/Q Modulator. Bypass with capacitor as close to the pin as possible. The bypass
capacitor must not share its ground vias with any other branches.
30, 31
Differential Tank Pins for the IF VCO. These pins are internally biased to +1.6V.
29
Buffered LO Output. Control the output buffer using register bit BUF_EN and the divide ratio
using the register bit BUF_DIV.
28
Supply Pin to the VCO Section. Bypass as close to the pin as possible. The bypass capacitor
should not share its vias with any other branches.
27
Shutdown Input. A logic low on SHDN shuts down the entire IC. An R-C lowpass filter may be
used to reduce digital noise.
25, 26
Differential I-Channel Baseband Inputs to the Modulator. These pins go directly to the bases of
a differential pair and require an external common-mode bias voltage.
NAME
Q+, Q-
V
CC
TANK-,
TANK+
IFLO
V
CC
SHDN
I+, I-
GND
DC and AC GND Return for the IC. Connect to PC board ground plane using multiple vias.
Exposed
paddle
GND
V
CC
LOH
LOL
REF
V
CC
IFCP
V
CC
Ground. Connect to PC board ground plane.
40, 45, 46,
47, 48
Supply Pin. Bypass as close to the pin as possible. The bypass capacitor may share with sup-
ply pin for digital circuitry, pin 39.
41
High-band RF LO Input Port. AC-couple to this port.
43
Low-band RF LO Input Port. AC-couple to this port.
44
Reference Frequency Input. REF is internally biased to V
CC
- 0.7V and must be AC-coupled to
the reference source. This is a high-impedance port (25k&
II
3pF).
36
Supply for the IF Charge Pump. This supply can differ from the system V
CC
. Bypass as close to
the pin as possible. The bypass capacitor must not share its vias with any other branches.
37
High-Impedance Output of the IF Charge Pump. Connect to the tune input of the IF VCOs
through the IF PLL loop filter. Keep the line from IFCP to the tune input as short as possible to
prevent spurious pickup, and connect the loop filter as close to the tune input as possible.
38
Supply Pin for Digital Circuitry. Bypass as close to the pin as possible. The bypass capacitor
must not share its vias with any other branch.
39
32, 33, 34,
35, 42
No Connection. Leave these pins floating.
N.C.
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
MAX2850ITK+
TRANSMITTER MIMO 5GHZ 4CH 68TQFN
MAX7057ASE+T
IC TRANSMITTER ASK/FSK 16-SOIC
MBA-2060
ANTENNA METROLOGY BICONICAL
MC33493ADTBER2
IC RF TRANSMITTER UHF 14-TSSOP
MDEV-916-ES
KIT MASTER DEVELOP 916MHZ ES SRS
MICRF102YM TR
IC TRANSMITTER ASK UHF 8-SOIC
MICRF112YMM TR
IC XMITTER UHF ASK/FSK 10-MSOP
MICRF405YML TR
TRANSMITTER ASK/FSK 24-MLF
相关代理商/技术参数
MAX2369EGM-D
功能描述:射频发射器 RoHS:否 制造商:Micrel 类型:ASK Transmitter 封装 / 箱体:SOT-23-6 工作频率:300 MHz to 450 MHz 封装:Reel
MAX2369EGM-TD
功能描述:射频发射器
RoHS:否 制造商:Micrel 类型:ASK Transmitter 封装 / 箱体:SOT-23-6 工作频率:300 MHz to 450 MHz 封装:Reel
MAX2369EGM-TDG069
制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX236C/D
功能描述:RS-232接口集成电路 +5V Pwrd 4 RS-232 Xmttrs and 3 RS-232 Rcvrs w/ Pwr Shtdwn & Rcvr RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装:
MAX236C/D DIE
制造商:Maxim Integrated Products 功能描述:
MAX236C/D+
功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装:
MAX236CNG
功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装:
MAX236CNG+
功能描述:RS-232接口集成电路 5V MultiCh RS-232 Driver/Receiver RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: