Typical operating characteristics (continued), Max2769b universal gps receiver – Rainbow Electronics MAX2769B User Manual
Page 8
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MAX2769B
Universal GPS Receiver
Typical Operating Characteristics (continued)
(MAX2769B EV kit, V
CC_
= 2.7V to 3.3V, T
A
= -40°C to +85NC, PGM = Ground. Registers are set to the default power-up states. LNA
input is driven from a 50I source. All RF measurements are done in the analog output mode with ADC bypassed. PGA gain is set
to 51dB gain by serial-interface word GAININ = 111010. Maximum IF output load is not to exceed 10kI||7.5pF on each pin. Typical
values are at V
CC_
= 2.85V and T
A
= +25NC, unless otherwise noted.)
3RD-ORDER POLYPHASE FILTER
vs. BASEBAND FREQUENCY (FBW = 01)
MAX2769B toc17
FREQUENCY (MHz)
FREQUENCY RESPONSE (dB)
18
16
14
12
10
8
6
4
2
-50
-40
-30
-20
-10
0
10
-60
0
20
5TH-ORDER POLYPHASE FILTER
vs. BASEBAND FREQUENCY (FBW = 01)
MAX2769B toc18
FREQUENCY (MHz)
FREQUENCY RESPONSE (dB)
18
16
14
12
10
8
6
4
2
-50
-40
-30
-20
-10
0
10
-60
0
20
3RD-ORDER POLYPHASE FILTER
vs. BASEBAND FREQUENCY (FBW = 10)
MAX2769B toc19
FREQUENCY (MHz)
FREQUENCY RESPONSE (dB)
18
16
14
12
10
8
6
4
2
-50
-40
-30
-20
-10
0
10
-60
0
20
5TH-ORDER POLYPHASE FILTER
vs. BASEBAND FREQUENCY (FBW = 10)
MAX2769B toc20
FREQUENCY (MHz)
FREQUENCY RESPONSE (dB)
18
16
14
12
10
8
6
4
2
-50
-40
-30
-20
-10
0
10
-60
0
20
2-BIT ADC TRANSFER CURVE
MAX2769B toc2
1
DIFFERENTIAL VOLTAGE (V)
CODE (DECIMAL VALUE)
0.8
0.6
-0.8 -0.6 -0.4
0 0.2
-0.2
0.4
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
-0.5
-1.0
1.0
3-BIT ADC TRANSFER CURVE
MAX2769B toc2
2
DIFFERENTIAL VOLTAGE (V)
CODE (DECIMAL VALUE)
0.8
0.6
-0.8 -0.6 -0.4
0 0.2
-0.2
0.4
1
2
3
4
5
6
7
0
-1.0
1.0