ATA5757 ATMEL Corporation, ATA5757 Datasheet - Page 15

• Manufacturer Part Number: ATA5757
• Description: (ATA5756 / ATA5757) UHF ASK/FSK TRANSMITTER
• Manufacturer: ATMEL Corporation

Electrical Characteristics
V
Typical values are given at V
C
4702H–RKE–09/04
Parameters
Supply current,
power-down mode
Supply current, idle mode
Supply current, power-up, PA off,
FSK switch High Z
Supply current, power-up, PA on,
FSK switch High Z
Supply current, power-up, PA on,
FSK Low Z
Output power
Output power for the full
temperature and supply voltage
range
Spurious emission
Harmonics
Oscillator frequency XTO
(= phase comparator frequency)
M
S
= 2.0 V to 3.6 V, T
=
4.37
fF,
C
0
=
1.3
pF,
amb
C
= -40°C to 125°C unless otherwise specified.
LNOM
S
= 3.0 V and T
=
18
Test Conditions
V
V
T
T
T
V
ASK,FSK can be Low or High
V
V
V
V
ENABLE is open
ATA5756
ATA5757
V
V
ENABLE is open
ATA5756
ATA5757
V
f = 315 MHz for
Z
f = 433.92 MHz for
Z
T
V
f
Load capacitance at pin CLK ≤ 20 pF
f
f
other spurious are lower
With 50 Ω matching network according
to Figure 9
2nd
3rd
f
f
f
XTAL, C
selected accordingly
T
T
CLK
0
0
XTO
XTO
XTAL
amb
amb
amb
amb
amb
amb
pF,
ASK
ASK
Load, opt
Load, opt
ENABLE
ENABLE
S
S
FSK
S
FSK
S
S
± f
± f
≤ 3.2 V, V
≤ 3.2 V, C
≤ 3.2 V, C
= 3.0 V, T
= 2.0 V to 3.2 V
= f
= f
= f
< 0.25 V, V
CLK
XT0
= 25° C
= -40° C to +85° C
= -40° C to +125° C
= -40°C to +125° C,
= -40°C to +85°C
= -40°C to +125°C
= resonant frequency of the
< 0.25 V, V
< 0.25 V ENABLE is open
> 1.7 V, V
C
4
0
0
XT0
/24
/32
M
=
< 0.25 V or ENABLE is open,
< 0.25 V, V
= (380 + j340) Ω
= (280 + j310) Ω
= 4.37 fF, load capacitance
/8
10
amb
ATA5756
ATA5757
FSK
CLK
CLK
amb
pF,
ASK
= 25°C. All parameters are referred to GND (Pin 9).
ASK
> 1.7 V,
≤ 10 pF
≤ 10 pF
FSK
ATA5756
= 25° C,
C
> 1.7 V
5
> 1.7 V
ATA5757
S
< 0.25 V
=
≤ 3.2 V
15
pF and
,
,
R
S
≤
60
Ω
I
I
Symbol
S_Transmit1
S_Transmit2
I
Spour
∆f
S_IDLE
I
P
P
S_Off
I
Out
Out
XTO
S
-14.0
-17.5
Min.
ATA5756/ATA5757
4
1
Typ.
f
f
-42
-60
-16
-15
3.6
8.1
8.5
8.4
8.8
XTAL
XTAL
1
6
7,000
+14.0
+17.5
Max.
10.5
10.2
11.0
100
350
100
4.6
9.8
8.2
8
dBm
dBm
Unit
ppm
ppm
dBc
dBc
dBc
mA
mA
mA
mA
mA
nA
nA
nA
µA
15