SA58646 Datasheet, PDF (28/42 Pages) NXP Semiconductors – UHF 900 MHz transceiver IC

NXP Semiconductors
SA58646
UHF 900 MHz transceiver IC
Table 26. Receiver part …continued
V_CC = 3.3 V; T_amb = 25 °C; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max Unit
FM receiver system characteristics
Conditions: f_o = 903 MHz; ∆f = ±25 kHz; f_mod = 1 kHz; DEM_F = 0; pin EARO: R_L= 150 Ω in series with 10 µF (all with ITU-T
filter)
S_RX
receiver sensitivity
measured at antenna with 3 dB
duplexer insertion loss;
B = 100 kHz
RX mode; input level for 9 dB
-
SINAD
−115 -
dBm
TX mode; PA = 10;
-
V_EARO = 200 mV (RMS);
minimum TX-to-RX duplexer
isolation = 35 dB
−113.5 -
dBm
S/N
signal-to-noise ratio
V_i(RF) = −80 dBm and −40 dBm;
25
38
-
dB
TX mode; PA_OUT[2:0] = 10;
CLKO off;
V_EARO = 200 mV (RMS)
THD
total harmonic distortion
at ∆f = ±60 kHz (without ITU-T
-
filter); V_i(RF) = −80 dBm and
−40 dBm; TX mode;
PA_OUT[2:0] = 10; CLKO off;
V_EARO = 500 mV (RMS)
0.6
2
%
RSSI or carrier detection: V_VB = 1.5 V
I_o(dyn)
dynamic output current
on pin RSSI
-
68
-
dB
N_step(th)(cd)
number of carrier detect
threshold steps
programmable through
microcontroller
-
32
-
V_det
detection voltage
V_hys
hysteresis voltage
V_det(step)
detection voltage step
Output: pin RSSI
0.05 -
-
45
-
40
1.6
V
-
mV
-
mV
R_int
internal resistance
Output: pin CDLBD
measured between pin RSSI
and V_CC
-
175
-
kΩ
V_OH
HIGH-level output voltage V_i(limiter) = 0 mV (RMS);
0.9V_CC -
-
V
RSSI threshold level = 0.86 V
V_OL
LOW-level output voltage V_i(limiter) = 100 mV (RMS);
-
-
0.1V_CC V
RSSI threshold level = 0.86 V
Data comparator
Input: pin DATAI
V_i(p-p)
V_hys(i)
V_th
peak-to-peak input voltage
input hysteresis voltage
threshold voltage
100
-
-
mV
25
40
75
mV
-
V_CC − -
V
0.9
Z_i
input impedance
Output: pin DATAO
150
240
-
kΩ
V_OH
HIGH-level output voltage V_DATAI = V_CC − 1.4 V
0.9V_CC -
-
V
SA58646_1
Product data sheet
Rev. 01 — 8 February 2007
© NXP B.V. 2007. All rights reserved.
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