28
4979D–GPS–06/08
ATR0635P1
9. Operating Range
Parameters Pins Symbol Min Typ Max Unit
Analog supply voltage RF VCC1, VCC2, VBP V
CC
2.70 3.30 V
Digital supply voltage RF VDIG V
DIG
1.65 1.8 1.95 V
Digital supply voltage core 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
Δ
=V
CC
–V
DIG
)
V
Δ
≥ 0.80 V
Temperature range 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.
10. 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 Type*
1 RF Front-end
1.1 Output frequency f
TXCO
= 23.104 MHz C3 f
IF
96.764 MHz A
1.2 Input impedance (balanced) f
RF
= 1575.42 MHz D1, C1 Z
11
10–j80 Ω C
1.3 Mixer conversion gain C3 G
MIX
10 dB C
1.4 Mixer noise figure (SSB) C3 NF
MIX
6dBC
1.5 Maximum total gain V
AGCO
= 2.2V G
max_tot
90 dB C
1.6 Total noise figure (SSB) NF
tot
6.8 dB C
2 VGA/AGC
2.1 Minimum gain V
AGCO
= 1.0V G
VGA,min
0dBC
2.2 Maximum gain V
AGCO
= 2.2V G
VGA,max
70 dB C
2.3 Control-voltage sensitivity
V
AGCO
= 2.2V N
VGA,min
6.6 dB/V D
V
AGCO
= 1.0V N
VGA,max
150 dB/V D
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
Notes: 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)
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