ATR0635 Datasheet, PDF (28/33 Pages) ATMEL Corporation – ANTARIS4 Single-chip GPS Receiver SuperSense

8. Operating Range
Parameters
Pins
Symbol
Min
Typ
Max
Unit
Analog supply voltage RF
Digital supply voltage RF
Digital supply voltage core
VCC1, VCC2, VBP
V_CC
2.70
3.30
V
VDIG
V_DIG
1.65
1.8
1.95
V
VDD18
VDD18
1.65
1.8
1.95
V
Digital supply voltage VDDIO
domain⁽¹⁾
VDDIO
VDDIO
1.65
1.8/3.3
3.6
V
Digital supply voltage USB⁽²⁾
VDD_USB
VDD_USB
3.0
3.3
3.6
V
DC supply voltage LDO18
LDO_IN
LDO_IN
2.3
3.6
V
DC supply voltage LDOBAT
LDOBAT_IN
LDOBAT_IN
2.3
3.6
V
DC Supply voltage VBAT
VBAT
VBAT
1.5
3.6
V
Supply voltage difference
(V_∆ = V_CC – V_DIG)
Temperature range
V_∆
≥ 0.80
V
Temp
–40
+85
°C
Input frequency
f_RF
1575.42
MHz
Reference frequency GPS XTAL
f_TCXO
23.104
MHz
Reference frequency RTC
f_XTC
32.768
KHz
Notes: 1. VDDIO is the supply voltage for the following GPIO-pins: P1, P2, P8, P12, P14, P16, P17, P18, P19, P20, P21, P23, P24,
P25, P26, P27 and P29
2. Values defined for operating USB Interface. Otherwise VDD_USB may be connected to ground.
9. Electrical Characteristics
If no additional information is given in column Test Conditions, the values apply to temperature range from –40°C to +85°C.
No. Parameters
Test Conditions
Pin
Symbol Min
Typ
Max
Unit
1 RF Front-end
1.1 Output frequency
1.2
Input impedance
(balanced)
f_TXCO = 23.104 MHz
f_RF = 1575.42 MHz
C3
f_IF
D1, C1
Z₁₁
96.764
10 – j80
MHz
Ω
1.3 Mixer conversion gain
1.4 Mixer noise figure (SSB)
1.5 Maximum total gain
V_AGCO = 2.2V
1.6 Total noise figure (SSB)
2 VGA/AGC
C3
G_MIX
C3
NF_MIX
G_{max_tot}
NF_tot
10
dB
6
dB
90
dB
6.8
dB
2.1
2.2
2.3
Notes:
Minimum gain
V_AGCO = 1.0V
G_VGA,min
0
dB
Maximum gain
V_AGCO = 2.2V
G_VGA,max
70
dB
Control-voltage sensitivity ^{VAGCO = 2.2V}
V_AGCO = 1.0V
N_VGA,min
N_VGA,max
6.6
150
dB/V
dB/V
1. The LDO18 is a built in low dropout voltage regulator, which can be used if the host system does not provide the core volt-
age VDD18.
2. The LDOBAT is a built in low dropout voltage regulator, which provides the supply voltage VBAT18 for the RTC, backup
SRAM, P9, P13, P22, P31, NSLEEP and NSHDN. The LDOBAT voltage regulator switches in battery mode if LDOBAT_IN
falls below 1.5V.
3. Supply voltage VBAT18 for backup domain is generated internally by the LDOBAT.
4. If no current is caused by outputs (pad output current as well as current across internal pull-up resistors)
28 ATR0635
4928C–GPS–06/06