- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385524 > MAX2402EVKIT-SO (Maxim Integrated Products, Inc.) Evaluation Kit PDF資料下載
參數(shù)資料
| 型號(hào)： | MAX2402EVKIT-SO |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Evaluation Kit |
| 中文描述： | 評(píng)估板 |
| 文件頁數(shù)： | 3/6頁 |
| 文件大?。?/td> | 2403K |
| 代理商： | MAX2402EVKIT-SO |
At these lower frequencies, more than 20dBm of
power can easily be obtained with BADJ set at 3V or
above (see the
BADJ Input
section of the MAX2402
data sheet).
Removing the V
CC
jumper (W1) on the EV kit will
connect BADJ to GND, while removing the GND
jumper (W2) will connect BADJ to V
CC
. Removing
both will cause BADJ to rely on its internal bias.
5) The MAX2402 SHDN pin connects to V
CC
through a
jumper and 100
. To test the shutdown function,
ensure that either W1 or W2 is removed, which will
prevent current draw through R6, R7, and R8. When
the SHDN jumper is removed and the SHDN test
point is grounded, the supply current should drop
below 1μA.
6) The modulated spectrum can be examined on the
spectrum analyzer by removing the shorting termina-
tion and supplying a modulation signal to the SMA
MOD input. The MOD input is linear from approxi-
mately 1.5V to 3.5V, and has a bandwidth of DC to
25MHz. The MOD input is self-biasing to approxi-
mately V
CC
/2. Any offset at the MOD input from a
symmetric signal around the self-bias voltage will act
as an offset and cause less than optimal carrier
rejection. Capacitive coupling into the MOD input
will eliminate this situation and result in optimum car-
rier rejection. The MOD input will act as an attenua-
tor if it is left open.
Adjustments and Control
VGC
The VGC jumper (W3) shorts the VGC input of the
MAX2402 to V
CC
. The VGC test point can be used to
manipulate the gain control voltage. The VGC jumper
(W3) should be removed before trying to control this
VGC voltage. It connects to V
CC
when in place.
SHDN
The SHDN jumper (W4) shorts the SHDN input to V
CC
to keep the part in normal operating condition. The
SHDN test point can be used with a controlling voltage
to power down the MAX2402. The SHDN jumper (W4)
should be removed when adjusting the voltage on the
test pin. It connects to V
CC
when in place.
BADJ
The two bias adjust jumpers connect either end of the
1k
potentiometer to V
CC
and GND through 50
resis-
tors. The wiper on the potentiometer has been factory
adjusted to provide 2.5V to the BADJ input on the
MAX2402. The BADJ test point is for monitoring the
BADJ voltage. The BADJ jumpers (W1, W2) connect R8
to V
CC
and GND, respectively. BADJ voltage is altered
by adjusting the R8 potentiometer.
Layout Considerations
The evaluation board can serve as a guide for board
layout. C3, C4, and C5 should be small surface-mount
capacitors, placed directly from each V
CC
pin to the
adjacent ground. Place them as close to the MAX2402
as possible, and make connections directly to the pins
(not through vias or long traces). C6, C7, and C8 should
also be surface mount. C7 should be next to C3. C8 and
C9 should be located at the V
CC
terminal of choke L2. If
the LO is driven single-ended, ground the unused LO
port. If a single resistor is used to bias BADJ, it may be
necessary to AC couple BADJ to ground with a low-
value capacitor, since the high-impedance at the BADJ
node may be sensitive to circuit noise. Although the eval-
uation board uses four layers, it is possible to use two.
E
MAX2402 Evaluation Kit
_______________________________________________________________________________________
3
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX2402 | 800MHz to 1000MHz Transmitter(800MHz~1000MHz擴(kuò)頻發(fā)送器) |
| MAX2441EAI | 900MHz Image-Reject Receivers |
| MAX2440 | 900MHz Image-Reject Receivers |
| MAX2440EAI | 900MHz Image-Reject Receivers |
| MAX2442EAI | 900MHz Image-Reject Receivers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX2403ETI | 功能描述:調(diào)節(jié)器/解調(diào)器 RoHS:否 制造商:Texas Instruments 封裝 / 箱體:PVQFN-N24 封裝:Reel |
| MAX2403ETI+ | 功能描述:調(diào)節(jié)器/解調(diào)器 RoHS:否 制造商:Texas Instruments 封裝 / 箱體:PVQFN-N24 封裝:Reel |
| MAX2403ETI+T | 功能描述:調(diào)節(jié)器/解調(diào)器 RoHS:否 制造商:Texas Instruments 封裝 / 箱體:PVQFN-N24 封裝:Reel |
| MAX2403ETI-T | 功能描述:調(diào)節(jié)器/解調(diào)器 RoHS:否 制造商:Texas Instruments 封裝 / 箱體:PVQFN-N24 封裝:Reel |
| MAX2403EVKIT | 功能描述:射頻開發(fā)工具 RoHS:否 制造商:Taiyo Yuden 產(chǎn)品:Wireless Modules 類型:Wireless Audio 工具用于評(píng)估:WYSAAVDX7 頻率: 工作電源電壓:3.4 V to 5.5 V |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。