MAX2837 Просмотр технического описания (PDF) - Maxim Integrated
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MAX2837 Datasheet PDF : 34 Pages
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MAX2837
2.3GHz to 2.7GHz Wireless
Broadband RF Transceiver
Typical Operating Characteristics (continued)
(MAX2837 evaluation kit: VCC_ = 2.8V, fLO = 2.5GHz, 10MHz channel 16E UL/DL WiMax signal, fREF = 40MHz, ENABLE = CS = high,
RXHP = SCLK = DIN = low, TA = +25°C, unless otherwise noted.)
INPUT RETURN LOSS vs. RF FREQUENCY
0
LNA = MAX - 32dB
-10
-20
LNA = MAX - 8dB,
LNA = MAX - 16dB
-30
-40
2.0
LNA = MAX
2.2 2.4 2.6 2.8 3.0
RF FREQUENCY (GHz)
Rx RSSI STEP RESPONSE
(-40dB SIGNAL STEP)
MAX2837 toc12
3V
0V
1.5V
RSSI VOLTAGE vs. INPUT POWER
3.0
CW TONE
2.5
LNA = MAX
2.0
LNA = MAX - 8dB
1.5
1.0
0.5
0
-120 -100
LNA = MAX - 16dB
LNA = MAX - 32dB
-80 -60 -40 -20 0
INPUT POWER (dBm)
Rx LPF GROUP DELAY vs. FREQUENCY
350
CHANNEL BW = 5MHz
300
CHANNEL BW = 8MHz
250
CHANNEL BW = 9MHz
200
150
CHANNEL BW = 10MHz
100
Rx RSSI STEP RESPONSE
(+40dB SIGNAL STEP)
MAX2837 toc11
3V
0V
1.45V
0.45V
200ns/div
HISTOGRAM: Rx STATIC DC OFFSET
78
MEAN: 0mV
65
STD: 0.977mV
SAMPLE SIZE: 1006
52
39
26
0.45V
50
13
200ns/div
0
0
0 2 4 6 8 10 12 14 16
FREQUENCY (MHz)
1σ/div
Tx CURRENT vs. SUPPLY VOLTAGE
150
Tx OUTPUT POWER vs. RF FREQUENCY
1
TA = +85°C
145
TA = +25°C
VCC = 3V, 3.6V
0
-1
140
TA = -40°C
135
2.7
3.0
3.3
3.6
SUPPLY VOLTAGE (V)
-2
-3
2.3
VCC = 2.7V
2.4
2.5
2.6
2.7
RF FREQUENCY (GHz)
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