AS3977BQFU austriamicrosystems, AS3977BQFU Datasheet - Page 10

• Manufacturer Part Number: AS3977BQFU
• Description: Ultra-High Frequency FSK Transmitter IC
• Manufacturer: austriamicrosystems

Specifications of AS3977BQFU

• Modulation Type: FSK
• Supply Voltage Range: 2V To 3.6V
• Module Interface: Serial
• Supply Current: 17mA
• Ic Function: Multi-Channel Narrowband FSK Transmitter
• Termination Type: SMD
• No. Of Pins: 16
• Rohs Compliant: Yes
• Operating Temperature Range: -40°C To +85°C
• Filter Terminals: SMD
• Digital Ic Case Style: QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AS3977
Data Sheet - E l e c t r i c a l C h a r a c t e r i s t i c s
Table 6. (Continued)Reference Frequency Generator and Micro Controller Clock Driver
1. These parameters will not be tested.
Table 7. Phase Locked Loop
Table 8. Loop Filter Bandwidth
www.austriamicrosystems.com/AS3977
Micro Controller Clock Driver
Filter Bandwidth at 315 MHz
Filter Bandwidth at 433 MHz
Symbol
Symbol
Symbol
f
R
C
t
t
t
f
t
MCCLK
V
t
V
SYNTH
RMCC
XOSC
XOSC
Δf/f
FMCC
I
I
f
LOCK
Δf
XOSC
LMCC
MCH
f
MCL
REF
MCH
MCL
BW
O
0
Charge pump setting:
Frequency Stability vs. Temperature
Crystal Oscillator Oscillation Margin
Crystal Oscillator Start up time
Output Frequency Resolution
Crystal Oscillator Frequency
Synthesizer Start up Time
High level output voltage
High level output current
Low level output voltage
Low level output current
Comparison Frequency
Clock output frequency
Synthesizer Lock Time
I
CHP
Capacitive load
Parameter
Parameter
Parameter
Rise time
Fall time
Level
@ 12.5 µA
@ 25 µA
@ 37.5µA
@ 50 µA
1
V
V
depending on configuration register
(reference divider division ratio = 4)
SUP
SUP
crystal series resistance ≤ 100Ω
Reference Frequency = 4MHz
f
=3V, at nominal high level output
=3V, at nominal high level output
XOSC
f
ERROR
depending on f
settings and crystal
T
V
f
f
=13.56MHz, C
OUT315
OUT868
AMB
V
SUP
T
AS3977 Only
Conditions
Conditions
Conditions
Δf=600kHz,
SUP
Revision 3.6
AMB
@ t
current
current
=2.0…3.6V,
=-40…85ºC
LOCK
= 3.0 V;
/ f
/ f
= 25ºC
OUT434
OUT915
=10kHz
XOSC
L
=12pF
0.9*V
1500
Min
Min
Min
3.0
12
46
92
SUP
Typ
170
Typ
Typ
122
500
115
4.0
55
85
16
61
50
0.1*V
Max
Max
62.5
62.5
Max
153
200
1.5
5.0
20
±1
20
77
4
1
1
SUP
Units
Units
Units
MHz
MHz
MHz
ppm
kHz
mA
mA
ms
Hz
10 - 47
pF
ns
ns
µs
µs
Ω
V
V