Si4720-A-EVB Silicon Laboratories Inc, Si4720-A-EVB Datasheet - Page 15

• Manufacturer Part Number: Si4720-A-EVB
• Description: WiFi / 802.11 Modules & Development Tools Si4720 Eval Board Use Si4721-A-EVB.
• Manufacturer: Silicon Laboratories Inc

Specifications of Si4720-A-EVB

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

Table 10. FM Transmitter Characteristics
Test conditions: V
unless otherwise specified.
Production test conditions: V
Characterization test conditions: V
All minimum and maximum specifications are guaranteed and apply across the recommended operating conditions.
Typical values apply at V
Parameters are tested in production unless otherwise specified.
Transmit Frequency Range
Transmit Frequency Accuracy and
Stability
Transmit Voltage Accuracy
Transmit Voltage Accuracy
Transmit Voltage Temperature
Coefficient
Transmit Channel Edge Power
Transmit Adjacent Channel Power
Transmit Alternate Channel Power
Transmit Emissions
Output Capacitance Max
Output Capacitance Min
Pre-emphasis Time Constant
Audio SNR Mono
Audio SNR Stereo
Audio THD Mono
Notes:
1. FM transmitter performance specifications are subject to adherence to Silicon Laboratories guidelines in “AN383:
2. Guaranteed by characterization.
3. No measurable ΔfRF/ΔV
Universal Antenna Selection and Layout Guidelines.” Silicon Laboratories will evaluate schematics and layouts for
qualified customers. Tested with test schematic (L = 120 nH, Q > 30) shown in Figure 10 on page 19.
2,3
2
Parameter
RF
2
= 118 dBµV, stereo, Δf = 68.25 kHz, Δfpilot = 6.75 kHz, REFCLK = 32.768 kHz, 75 µs pre-emphasis,
DD
2
= 3.3 V and 25 °C unless otherwise stated.
2
DD
2
2
= 3.3 V, V
DD
2
DD
at ΔV
= 2.7 to 5.5 V, V
DD
IO
Symbol
= 3.3 V, T
C
C
of 500 mVpk-pk at 100 Hz to 10 kHz.
f
TUNE
TUNE
RF
1
IO
A
TX_PREMPHASIS = 75 µs
TX_PREMPHASIS = 50 µs
Δfpilot = 6.75 kHz, Stereo,
= 25 °C, F
= 1.5 to 3.6 V, T
In-band (76–108 MHz)
V
V
Δf = 22.5 kHz, Mono,
Δf = 75 kHz, Mono,
Rev. 1.0
RF
RF
pre-emphasis off
pre-emphasis off
pre-emphasis off
Test Condition
Δf = 22.5 kHz,
= 103–117 dBµV
= 102, 118 dBµV
> ±100 kHz,
> ±200 kHz,
> ±400 kHz,
limiter off
limiter off
limiter off
RF
= 98 MHz.
A
= –20 to 85 °C, F
–0.075
–3.5
–2.5
–2.5
Min
76
—
70
45
58
53
—
—
—
—
—
—
Si4720/21-B20
RF
= 76–108 MHz.
Typ
–30
–30
0.1
53
75
50
63
58
—
—
—
—
—
—
—
5
–0.025
Max
108
–20
–26
–26
–30
3.5
2.5
2.5
0.5
80
54
—
—
—
—
dB/°C
MHz
Unit
dBc
dBc
dBc
dBc
kHz
dB
dB
pF
pF
dB
dB
µs
µs
%
15