Max2769b universal gps receiver, Typical operating characteristics (continued) – Rainbow Electronics MAX2769B User Manual
Page 9
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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.)
DIGITAL OUTPUT CMOS LOGIC
MAX2769B toc23
20ns/div
CLK
2V/div
SIGN DATA
2V/div
MAGNITUDE
DATA
2V/div
DIGITAL OUTPUT DIFFERENTIAL LOGIC
MAX2769B toc24
40ns/div
CLK
1V/div
SIGN+
1V/div
SIGN-
1V/div
CRYSTAL OSCILLATOR FREQUENCY
vs. DIGITAL TUNING CODE
MAX2769B toc2
5
DIGITAL TUNING CODE (DECIMAL)
CRYSTAL OSCILLATOR FREQUENCY (kHz)
28
24
20
16
12
8
4
16,367.90
16,367.95
16,368.00
16,368.05
16,368.10
16,367.85
0
32
T
A
= +25°C
T
A
= +85°C
T
A
= -40°C
CRYSTAL OSCILLATOR FREQUENCY
VARIATION vs. TEMPERATURE
MAX2769B toc2
6
TEMPERATURE (°C)
CRYSTAL OSCILLATOR FREQUENCY VARIATION (ppm)
60
35
10
-15
-8
-6
-4
-2
0
2
4
6
8
10
-10
-40
85
TEMPERATURE SENSOR VOLTAGE
vs. TEMPERATURE
MAX2769B toc27
TEMPERATURE (°C)
TEMPERATURE SENSOR VOLTAGE (V)
60
35
-15
10
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0.4
-40
85
CLOCK OUTPUT DRIVER WITH
40pF LOAD
MAX2769B toc28
20ns/div