TDA8051 Datasheet, PDF (8/24 Pages) NXP Semiconductors – QPSK receiver

Philips Semiconductors
QPSK receiver
Product specification
TDA8051
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX.
UNIT
∆Φ_I-Q
phase error between I and Q f_LO = 88 to 140 MHz;
−
±3 −
deg
channels
f_RF = 44.25 to 70.25 MHz;
f_BF = 250 kHz at 22 dBmV
over specified input range
∆G_I-Q
gain error between I and Q f_LO = 88 to 140 MHz;
−
±1 −
dB
channels
f_RF = 44.25 to 70.25 MHz;
f_BF = 250 kHz at 22 dBmV
over specified input range
IM3
3rd-order intermodulation in see Fig.3
I and Q channels
−
− −45
dBc
IM2
2nd-order intermodulation in see Fig.3
I and Q channels
−
− −40
dBc
AMREJ
AM rejection at I and Q
channels
guaranteed by design;
−
see Fig.4
− −38
dBc
∆V_o(I/Q)
output flatness at I and Q
in 1 MHz bandwidth
−
0.25 −
dB
outputs
f = 40 to 70 MHz
−
3−
dB
V_o(DC)
R_o
DC output level
output resistance
f = 70 to 130 MHz
−
3−
dB
−
2.5 −
V
−
400 −
Ω
Output section: R_s = 400 Ω/R_i = 4 kΩ/R on pin I_OUT2 or Q_OUT2 = 20 kΩ unless otherwise specified
V_I(DC)
V_i
R_i
C_i
G_O
DC input voltage
input level
input resistance
input capacitance
gain from
I-Q_IN1 to I-Q_OUT2
−
−
−
−
f_BF = 1 MHz at 22 dBmV
−
3.6 −
22 −
17.5 −
0.4 −
3.8 −
V
dBmV
kΩ
pF
dB
∆V_{o(I-Q_out2)} output flatness on
f_BF = 0 to 1.5 MHz
−
0.25 −
dB
pins I_OUT2 and Q_OUT2 _{fBF = 0 to 6 MHz at 22 dBmV −}
1−
dB
input
V_o(flt)
R_o
H₂
DC output level at filter output
−
output resistance
f < 20 MHz
−
2nd harmonic
f_BF = 1 MHz at 48 dBmV
−
output
2.6 −
V
250 −
Ω
−40 −35
dBc
H₃
3rd harmonic
f_BF = 1 MHz at 48 dBmV
−
output
−45 −40
dBc
IM3
3rd-order intermodulation at see Fig.5
pins I_OUT and Q_OUT
−
−50 −45
dBc
α_CT(I-Q)
crosstalk between I and Q f = 5 MHz; see Fig.6
−
channels
−40 −30
dBc
N_o
output noise power at
see Fig.7
500 kHz from carrier
−
−56 −
dBmv/Hz
G_I-Q
gain from
I-Q_IN1 to I-Q_OUT
f_BF = 1 MHz at 22 dBmV
−
input
27 −
dB
1999 Aug 20
8