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參數(shù)資料
| 型號： | MAX2426EAI |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | 900MHz Image-Reject Receivers with Transmit Mixer |
| 中文描述： | TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, PDSO28 |
| 封裝： | SSOP-28 |
| 文件頁數(shù)： | 7/14頁 |
| 文件大小： | 163K |
| 代理商： | MAX2426EAI |
M
900MHz Image-Reject Receiver
with Transmit Mixer
_______________________________________________________________________________________
7
-36
3
0
-3
-6
-9
-12
-15
-18
-21
-24
-27
-30
-33
1
10
FREQUENCY (MHz)
100
1000
TRANSMITTER BASEBAND
FREQUENCY RESPONSE
M
T
TXON = V
CC
-100
10
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
10
100
1000
POWER vs. TXIN VOLTAGE
M
TXIN VOLTAGE (mVp-p)
P
TXON = V
NOTE: TXIN IS TOTAL
VOLTAGE FOR TWO TONES
(PEAK-TO-PEAK)
FUNDAMENTAL
IM3 LEVEL
______________________________Typical Operating Characteristics (continued)
(MAX2424/MAX2426 EV kit, V
CC
= +3.3V; f
LO(RX)
= 925.7MHz (MAX2424), 985MHz (MAX2426); f
RXIN
= 915MHz, P
RXIN
=
-35dBm, f
LO(TX)
= 915MHz, V
TXIN
= V
TXIN
= 2.3V (DC bias), V
TXIN
= 250mVp-p, f
TXIN
= 1MHz, V
LNAGAIN
= 2V, V
VCOON
= 2.4V,
RXON = TXON = MOD = DIV1 = PREGND = GND, T
A
= +25°C, unless otherwise noted.)
______________________________________________________________Pin Description
Supply Voltage Input for the Receive Low-Noise Amplifier. Bypass with a 47pF low-inductance capacitor
to GND (pin 7 recommended).
6
Receiver RF Input, single ended. The input match shown in Figure 1 maintains an input VSWR of better
than 2:1 from 902MHz to 928MHz.
5
Ground Connection
4
V
CC
RXIN
GND
Single-ended, 330
IF Output. AC couple to this pin.
3
Receive Bias Compensation Pin. Bypass with a 47pF low-inductance capacitor and 0.01μF to GND.
Do not make any other connections to this pin.
2
Supply-Voltage Input for Master Bias Cell. Bypass with a 47pF low-inductance capacitor and 0.1μF to
GND (pin 28 recommended).
1
FUNCTION
PIN
Low-Noise Amplifier Gain-Control Input. Drive this pin high for maximum gain. When LNAGAIN is pulled
low, the LNA is capacitively bypassed and the supply current is reduced by 4.5mA. This pin can also be
driven with an analog voltage to adjust the LNA gain in intermediate states. Refer to the Receiver Gain
vs. LNAGAIN Voltage graph in the Typical Operating Characteristics, as well as Table 1.
10
PA Predriver Output. See Figure 1 for an example matching network, which provides better than 2:1
VSWR from 902MHz to 928MHz.
9
LNAGAIN
TXOUT
Ground Connection for Receive Low-Noise Amplifier. Connect directly to ground plane using multiple
vias.
7
GND
RXOUT
CAP1
V
CC
NAME
Ground Connection for Signal-Path Blocks, except LNA
8
GND
Supply Voltage Input for the Signal-Path Blocks, except LNA. Bypass with a 47pF low-inductance capac-
itor and 0.01μF to GND (pin 8 recommended).
11
V
CC
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