SA58646 Datasheet, PDF (33/42 Pages) NXP Semiconductors – UHF 900 MHz transceiver IC

NXP Semiconductors
SA58646
UHF 900 MHz transceiver IC
Table 30. TX baseband …continued
V_CC = 3.3 V; T_amb = 25 °C; see Figure 8.
V_VB = 1.5 V; f_i = 1 kHz; TX gain set for +10 dB gain at −30 dBV on pin CMPI; unless otherwise specified.
Symbol
Parameter
Conditions
Min Typ
∆G
gain deviation
G_max
THD
t_att(compr)
t_rel(compr)
Hard limiter
maximum gain
total harmonic distortion
compressor attack time
compressor release time
referenced to V_CMPI = −30 dBV
V_CMPI = −10 dBV
V_CMPI = −50 dBV
V_CMPI = −70 dBV
V_CMPI = −10 dBV; ALC off
C_CCAP = 0.47 µF
C_CCAP = 0.47 µF
8
10
−14 −10
-
23
-
0.5
-
4.0
-
8.0
V_o(p-p)
peak-to-peak output voltage
V_CMPI = −4 dBV; ALC off;
hard limiter enabled
-
1.26
TX mute
α_mute
mute attenuation
TX gain adjust
V_CMPI = −10 dBV; ALC off
-
−70
∆G_adj
N_{step(G_adj)}
gain adjustment range
number of gain adjustment
steps
RX_GAIN[4:0]
−7.5 -
-
32
Output: pin TXO
α_{ct(expdr-compr)} expander to compressor
crosstalk attenuation
Z_o
V_o(max)
output impedance
maximum output voltage
from pins RXAI to TXO;
V_RXAI = −10 dBV;
V_CMPI = 0 V (RMS)
ALC on
V_CMPI = −12 dBV
V_CMPI = −10 dBV
V_CMPI = −2.5 dBV
-
65
-
500
-
−12.5
-
−12.3
-
−11.5
Max
12
−8
-
2
-
-
-
−60
+8
-
-
-
-
-
-
Unit
dB
dB
dB
%
ms
ms
V
dB
dB
dB
Ω
dBV
dBV
dBV
Table 31. Other features
V_CC = 3.3 V; T_amb = 25 °C; unless otherwise specified.
Symbol Parameter
Conditions
Min
Typ
Max Unit
PLL voltage regulator: pin VREG
V_O
output voltage
voltage regulator disabled
voltage regulator enabled
-
V_CC
-
V
before V_ref adjustment or in
2.5
2.7
2.9
V
Inactive mode
after V_ref adjustment
I_O
output current
C_VREG = 1 µF
Low battery detector: battery detection enabled
2.65 2.7
-
-
2.75 V
3
mA
V_det
V_hys
N_{step(V_det)}
detection voltage
hysteresis voltage
number of detection voltage
steps
L_BAT_DET[2:0]
2.8
-
[1] _-
18
-
8
3.5
V
-
mV
-
SA58646_1
Product data sheet
Rev. 01 — 8 February 2007
© NXP B.V. 2007. All rights reserved.
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