SI4710-B30 Datasheet, PDF (13/40 Pages) Silicon Laboratories – Si4710/11-B30 FM RADIO TRANSMITTER

Si4710/11-B30
Table 9. FM Transmitter Characteristics¹ (Continued)
(Test conditions: V_RF = 118 dBµV, stereo, f = 68.25 kHz, fpilot = 6.75 kHz, REFCLK = 32.768 kHz, 75 µs pre-emphasis,
unless otherwise specified.
Production test conditions: V_DD = 3.3 V, V_IO = 3.3 V, T_A = 25 °C, F_RF = 98 MHz.
Characterization test conditions: V_DD = 2.7 to 5.5 V, V_IO = 1.5 to 3.6 V, T_A = –20 to 85 °C, F_RF = 76–108 MHz.
All minimum and maximum specifications are guaranteed and apply across the recommended operating conditions.
Typical values apply at V_DD = 3.3 V and 25 °C unless otherwise stated.
Parameters are tested in production unless otherwise specified.)
Parameter
Symbol
Test Condition
Min Typ Max Unit
Sub Carrier Rejection Ratio
Powerup Settling Time²
Input Signal Level²
Frequency Flatness²
High Pass Corner Frequency²
Low Pass Corner Frequency²
SCR
40
50
—
dB
—
—
110
ms
V_AI
—
Mono, ±1.5 dB,
30
f = 75 kHz, 0, 50, 75 µs
pre-emphasis, limiter off
— 0.636 V_PK
— 15 k
Hz
Mono, –3 dB, f = 75 kHz, 5
—
30
Hz
0, 50, 75 µs pre-emphasis,
limiter off
Mono, –3 dB, f = 75 kHz, 15 k — 16 k
Hz
0, 50, 75 µs pre-emphasis,
limiter off
Audio Imbalance
Pilot Modulation Rate Accuracy²
Audio Modulation Rate Accuracy²
Input Resistance²
Input Capacitance²
Mono
–1
—
1
dB
f = 68.25 kHz,
–10 —
10
%
fpilot = 6.75 kHz, Stereo
f = 68.25 kHz,
–10 —
10
%
fpilot = 6.75 kHz, Stereo
LIATTEN[1:0] = 11
50
60
—
k
—
10
—
pF
Notes:
1. FM transmitter performance specifications are subject to adherence to Silicon Laboratories guidelines in “AN383:
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 9 on page 14.
2. Guaranteed by characterization.
3. No measurable fRF/V_DD at V_DD of 500 mVpk-pk at 100 Hz to 10 kHz.
Table 10. Reference Clock Characteristics
(V_DD = 2.7 to 5.5 V, V_IO = 1.5 to 3.6 V, T_A = –20 to 85 °C, F_RF = 76–108 MHz)
Supported Parameter
RCLK Frequency Range^1,2
Frequency Tolerance¹
Symbol
Test Condition
Min Typ
31.130 32.768
–50
—
Max
40,000
50
Unit
kHz
ppm
Notes:
1. Guaranteed by characterization.
2. The RCLK frequency divided by an integer number (the prescaler value) must fall in the range of 31,130 to 34,406 Hz.
Therefore, the range of RCLK frequencies is not continuous below frequencies of 311.3 kHz.
Rev. 1.1
13