MAX2769ETI+T Maxim Integrated Products, MAX2769ETI+T Datasheet - Page 17

• Manufacturer Part Number: MAX2769ETI+T
• Description: RF Receiver Low-Power GPS and GL ONASS Receiver with
• Manufacturer: Maxim Integrated Products

Specifications of MAX2769ETI+T

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 6. Configuration 1 (Address: 0000)
LNAMODE
DATA BIT
MIXPOLE
CHIPEN
ANTEN
FCENX
MIXEN
F3OR5
FGAIN
ILNA1
ILNA2
FCEN
IDLE
FBW
IMIX
ILO
LOCATION
25:22
21:20
19:18
17:16
14:13
10:5
4:3
27
26
15
12
11
2
1
0
______________________________________________________________________________________
DEFAULT
VALUE
001101
1000
10
10
01
00
00
1
0
0
1
1
0
1
1
Chip enable. Set 1 to enable the device and 0 to disable the entire device except the
serial bus.
Idle enable. Set 1 to put the chip in the idle mode and 0 for operating mode.
LNA1 current programming.
LNA2 current programming.
LO buffer current programming.
Mixer current programming.
Mixer pole selection. Set 1 to program the passive filter pole at mixer output at 36MHz, or
set 0 to program the pole at 13MHz.
LN A m od e sel ecti on, D 14:D 13 = 00: LN A sel ecti on g ated b y the antenna b i as ci r cui t, 01:
LN A2 i s acti ve; 10: LN A1 i s acti ve; 11: b oth LN A1 and LN A2 ar e off.
Mixer enable. Set 1 to enable the mixer and 0 to shut down the mixer.
Antenna b i as enab l e. S et 1 to enab l e the antenna b i as and 0 to shut d ow n the antenna b i as.
IF center frequency programming. Default for f
IF filter center bandwidth selection. D4:D3 = 00: 2.5MHz; 10: 4.2MHz; 01: 8MHz;
11: 18MHz (only used as a lowpass filter).
Filter order selection. Set 0 to select the 5th-order Butterworth filter. Set 1 to select the
3rd-order Butterworth filter.
Polyphase filter selection. Set 1 to select complex bandpass filter mode. Set 0 to select
lowpass filter mode.
IF filter gain setting. Set 0 to reduce the filter gain by 6dB.
Universal GPS Receiver
DESCRIPTION
CENTER
Detailed Register Definitions
= 4MHz, BW = 2.5MHz.
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