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參數(shù)資料
| 型號： | RF2870 |
| 廠商： | RF MICRO DEVICES INC |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | CDMA LOW NOISE AMPLIFIER/MIXER 900MHz DOWNCONVERTER |
| 中文描述： | TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, QCC16 |
| 封裝： | 3 X 3 MM, ROHS COMPLIANT, QFN-16 |
| 文件頁數(shù)： | 4/14頁 |
| 文件大小： | 400K |
| 代理商： | RF2870 |
8-4
RF2870
Rev A8 030507
Evaluation Board Current Measurement (Typical Values for V
CC
=2.75V)
NOTES:
All IDC current numbers include bias circuitry current of 1.5mA to 2.0mA (dependent on mode).
TX Buffer On: Add 2.4mA to total current.
Cascaded Performance (Typical Values for V
CC
=2.75V)
NOTE:
All total current numbers include bias circuitry current of 1.5mA to 2.0mA (dependent on mode).
Gain Control State Table
ENABLE
LNA
GAIN
MIX
GAIN
TX BUFF
ENABLE
IDC
(mA)
Gain Control State
Power Down
LNA On, Mixer Preamp On,
TX Buffer Off
LNA On, Mixer Preamp Off,
TX Buffer Off
LNA Bypassed, Mixer Preamp On,
TX Buffer Off
LNA Bypassed, Mixer Preamp Off,
TX Buffer Off
0
1
X
0
X
0
X
0
<0.01
26.5
1
0
1
0
20.6
1
1
1
0
20.9
1
1
0
0
15.0
CELL CDMA
Parameter
LNA ON
LNA OFF
LNA ON
LNA OFF
Mixer Preamp On
Mixer Preamp Off
Cascaded:
Gain (dB)
Noise Figure (dB)
Input IP3 (dBm)
25.0
1.9
-9.0
7.5
12.0
+8.4
14.0
4.5
+2.0
-3.5
19.5
+18.8
LO to IF Isolation (dB)
IF1 to RF Isolation (dB)
IF2 to RF Isolation (dB)
LO to LNA IN Isolation (dB)
Total Current (mA)
NOTE: Assumes 2.5dB image filter insertion loss. The TX Buffer Enable is off.
30
40
40
45
26.5
30
40
40
45
20.9
30
40
40
45
20.6
30
40
40
45
15.0
Corresponding Device State
LNA
Amplifier
On
On
Off
Off
Gain State
LNA Gain
Logic Input
0
0
1
1
Mix Gain
Logic Input
0
1
1
0
Mixer
Preamp
On
Off
On
Off
Comments
IMD Test 1 and 2
IMD Test 3 and 4
IMD Test 5 and 6
High Gain
Mid Gain
Low Gain
Ultra-Low Gain
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| RF2870PCBA | 制造商:RFMD 制造商全稱:RF Micro Devices 功能描述:CDMA LOW NOISE AMPLIFIER/MIXER 900MHz DOWNCONVERTER |
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