SA604A 查看數據表（PDF） - NXP Semiconductors.
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SA604A Datasheet PDF : 31 Pages
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NXP Semiconductors
SA604A
High-performance low-power FM IF system
11. Dynamic characteristics
Table 7. Dynamic characteristics
Typical reading at Tamb = 25 C; VCC = 6 V, unless specified otherwise. IF frequency = 455 kHz; IF level = 47 dBm;
FM modulation = 1 kHz with 8 kHz peak deviation. Audio output with C-message weighted filter and de-emphasis capacitor.
Test circuit Figure 14. The parameters listed below are tested using automatic test equipment to assure consistent electrical
characteristics. The limits do not represent the ultimate performance limits of the device. Use of an optimized RF layout will
improve many of the listed parameters.
Symbol Parameter
Conditions
Min
Typ
Max Unit
input limiting 3 dB
test at pin IF_AMP_INPUT; per 50
-
92
-
dBm
AM
AM rejection
80 % AM 1 kHz
recovered audio level 15 nF de-emphasis; RMS value
30
34
-
dB
80
175
260
mV
150 pF de-emphasis; RMS value
-
530
-
mV
THD
total harmonic distortion
34
42
-
dB
S/N
signal-to-noise ratio
no modulation for noise
-
73
-
dB
Vo(RSSI)
RSSI output voltage
IF level = 118 dBm
IF level = 68 dBm (SA604AD/01,
SA604AHR)
[1] 0
[1] 1.9
160
650
mV
2.65 3.1
V
IF level = 68 dBm (SA604AD/02)
[1] 2.1
2.65 3.1
V
IF level = 18 dBm
[1] 4.0
4.85 5.6
V
RSSI(range) RSSI range
RSSI accuracy
R4 = 100 k (pin RSSI_OUTPUT)
R4 = 100 k (pin RSSI_OUTPUT)
-
90
-
dB
-
1.5 -
dB
Zi(IF)
Zo(IF)
Zi(lim)
Ro
IF input impedance
IF output impedance
limiter input impedance
output resistance
unmuted audio
muted audio
1.4
1.6
-
k
0.85 1.0
-
k
1.4
1.6
-
k
-
58
-
k
-
58
-
k
[1] IF level is referenced to level at IF pin which is at 1.5 k input impedance.
SA604A
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4.3 — 13 July 2016
© NXP Semiconductors N.V. 2016. All rights reserved.
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