- 您现在的位置：买卖IC网 > Sheet目录1193 > AD8348-EVALZ (Analog Devices Inc)BOARD EVAL FOR AD8348
AD8348
Table 6. Evaluation Board Configuration Options
Component
V S , GND
SW11, ENBL
SW13, R15,
VGIN
SW12
IFIP, R31, R32
MXIP, MXIN,
T41,
R41, R42,
C42, C43
LK11, VCMO
C8, C9, R4, R5
(I and Q)
C10 (I and Q)
C1 to C7,
R1, R2,
L1 to L3
(I and Q)
LK5 (I and Q)
Function
Power supply and ground vector pins.
Device enable: Place SW11 in the ENBL position to connect the ENBL pin to V S . Place SW11 in
the DENBL position to disable the device by grounding the Pin ENBL through a 50 Ω pull-down
resistor. The device can also be enabled via an external voltage applied to ENBL or VENB.
Gain control selection: With SW13 in the POT position, the gain of the VGA can be set using the
R15 potentiometer. With SW13 in the EXT position, the VGA gain can be set by an external
voltage to the SMA connector VGIN. For VGA operation, the VGA must first be enabled by
setting SW12 to the IF position.
VGA enable selection: With SW12 in the IF position, the ENVG pin is connected to V S and the
VGA is enabled. The IF input should be used when SW12 is in the IF position. With SW12 in the
MX position, the ENVG pin is grounded and the VGA is disabled. The MX inputs should be used
when SW12 is in the MX position.
IF inputs: The single-ended IF signal should be connected to this SMA connector. R31 and R32
form an L pad that presents a 50 Ω termination to the driving source. This L pad introduces an
11.46 dB loss in the input signal path and should be taken into consideration when calculating
the gain of the AD8348.
Mixer inputs: These inputs can be configured for either differential or single-ended operation.
The evaluation board is by default set for differential MX drive through a balun (T41) from a
single-ended source fed into the MXIP SMA connector. To change to a differential driving source,
T41 should be removed along with Resistor R42. The 0 Ω Resistors R43 and R44 should be installed in
place of T41 to bridge the gap between the input traces. This will present a nominal differential
impedance of 200 Ω (100 Ω per side). The differential inputs should then be fed into SMA
connectors MXIP and MXIN.
Baseband amplifier output bias: Installing LK11 connects VREF to VCMO. This sets the bias level
on the baseband amplifiers to VREF, which is equal to approximately 1 V. Alternatively, with
LK11 removed, the bias level of the baseband amplifiers can be set by applying an external
voltage to the VCMO test point.
Baseband amplifier outputs and output filter: Additional low-pass filtering can be provided at
the baseband output with these filters.
Mixer output dc-blocking capacitors: The mixer outputs are biased to VCMO. To prevent
damage to test equipment that cannot tolerate dc biases, C10 is provided to block the dc
component, thus protecting the test equipment.
Baseband filter: These components are provided for baseband filtering between the mixer
outputs and the baseband amplifier inputs. The baseband amplifier input impedance is high
and the filter termination impedance is set by R2. See Table 7 for the jumper settings.
Offset compensation loop disable: Installing these jumpers will disable the offset compensation
Default Condition
Not applicable
SW11 = ENBL
SW13 = POT
SW12 = IF
R31 = 57.6 Ω
R32 = 174 Ω
T41 = M/A-COM ETK4-2T;
R41= OPEN; C42, C43 =
1000 pF; R42 = 0 Ω
LK11 installed
R4, R5 = 0 Ω
C10 = 0 Ω
All = OPEN
LK5x = OPEN
loop for the corresponding channel.
Table 7. Filter-Jumper Configuration Options
Condition
LK1x
LK2x
LK3x
LK4x
xMXO to xAIN Directly
xMXO to xAIN via Filter
xMXO to J1x Directly, xAIN Unused
xMXO to J1x via Filter, xAIN Unused
Drive xAIN from J1x
?
?
Rev. A | Page 27 of 28
?
?
?
?
?
?
?
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
AD8436-EVALZ
BOARD EVAL FOR AD8436
AD9352-5/PCBZ
EVALUATION BOARD
AD9550/PCBZ
BOARD EVALUATION FOR AD9550
AD9985A/PCBZ
KIT EVALUATION FOR AD9985A
ADA4850-2YCP-EBZ
BOARD EVAL FOR ADA4850-2YCP
ADA4899-1YCP-EBZ
BOARD EVAL FOR ADA4899-1YCP
ADA4937-1YCP-EBZ
BOARD EVAL FOR ADA4937-1YCP
ADA4938-2YCP-EBZ
BOARD EVAL FOR ADA4938-2YCP
相关代理商/技术参数
AD8348XRU
制造商:Analog Devices 功能描述:QUADRATURE MODULATOR X-GRADE - Rail/Tube
AD8348XXX
制造商:AD 制造商全称:Analog Devices 功能描述:50-1000 MHz Quadrature Demodulator
AD8349
制造商:AD 制造商全称:Analog Devices 功能描述:400 MHz to 6 GHz Broadband Quadrature Modulator
AD8349ARE
制造商:Analog Devices 功能描述:Quadrature Mod 160MHz 16-Pin TSSOP EP Tube 制造商:Rochester Electronics LLC 功能描述:DIRECT QUADRATURE MODULATOR - Bulk 制造商:Analog Devices 功能描述:IC MODULATOR QUADRATURE
AD8349ARE-REEL7
功能描述:IC QUADRATURE MOD 700MHZ 16TSSOP RoHS:否 类别:RF/IF 和 RFID >> RF 调制器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:调制器 LO 频率:700MHz ~ 2.3GHz RF 频率:700MHz ~ 2.3GHz P1dB:1dBm 底噪:-148dBm/Hz 输出功率:-1dBm 电流 - 电源:46mA 电源电压:2.7 V ~ 3.6 V 测试频率:1.75GHz 封装/外壳:28-WFQFN 裸露焊盘 包装:带卷 (TR)
AD8349AREZ
功能描述:IC QUADRATURE MOD 700MHZ 16TSSOP RoHS:是 类别:RF/IF 和 RFID >> RF 调制器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:调制器 LO 频率:700MHz ~ 2.3GHz RF 频率:700MHz ~ 2.3GHz P1dB:1dBm 底噪:-148dBm/Hz 输出功率:-1dBm 电流 - 电源:46mA 电源电压:2.7 V ~ 3.6 V 测试频率:1.75GHz 封装/外壳:28-WFQFN 裸露焊盘 包装:带卷 (TR)
AD8349AREZ-RL7
功能描述:IC MOD QUAD 2.7GHZ 16TSSOP RoHS:是 类别:RF/IF 和 RFID >> RF 调制器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:调制器 LO 频率:700MHz ~ 2.3GHz RF 频率:700MHz ~ 2.3GHz P1dB:1dBm 底噪:-148dBm/Hz 输出功率:-1dBm 电流 - 电源:46mA 电源电压:2.7 V ~ 3.6 V 测试频率:1.75GHz 封装/外壳:28-WFQFN 裸露焊盘 包装:带卷 (TR)
AD8349EVAL
制造商:Analog Devices 功能描述:IC ((NS))