TRF3710 Datasheet, PDF (5/30 Pages) Texas Instruments – IQ DEMODULATOR

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TRF3710
SLWS199 – AUGUST 2007
ELECTRICAL CHARACTERISTICS (continued)
Power supply = 5.0 V, LO = 0 dBm at 25°C (unless otherwise noted)
OIP3_BB
OIP1_BB
IIP2_BB
f_LPF
PARAMETER
Output 3^rd intercept point
Output compression point
2^nd order input intercept point
TEST CONDITIONS⁽¹⁾
Gain setting = 15; 2 tones 1 V_PP each ⁽⁵⁾
1 tone⁽⁶⁾
Gain setting = 15⁽⁷⁾
Baseband low pass filter cutoff
frequency
1-dB point⁽⁸⁾
615 kHz
Baseband relative attenuation
at Min LPF cutoff frequency⁽⁹⁾
900 kHz
1.7 MHz
5 MHz
20 MHz
1.92 MHz
Baseband relative attenuation ^{2.7 MHz}
at Max LPF cutoff frequency⁽⁹⁾ _{5.0 MHz}
20 MHz
Baseband filter phase linearity rms phase deviation from linear phase⁽¹⁰⁾
Baseband filter amplitude
ripple
See ⁽¹⁰⁾
Sideband suppression
Output load impedance
Parallel resistance
Parallel capacitance
V_CM
Output common mode
LOCAL OSCILLATOR PARAMETERS
Measured at I and Q channel baseband outputs
Local oscillator frequency
LO input level
LO leakage
At MIXinn/p
DIGITAL INTERFACE
V_IH
High-level input voltage
V_IL
Low-level input voltage
V_OH
High-level output voltage
V_OL
Low-level output voltage
MIN
0.615
60
35
0.7
1700
2
0
0.8 × V_CC
TYP
MAX UNIT
32
dBVrms
3
dBVrms
60
dBm
1.92 MHz
1
10
50
dB
100
1
10
dB
50
100
1.8
Degree
0.5
dB
dB
1
kΩ
20
pF
1.5
4.0
V
2000 MHz
0
dBm
–58 dBm
5
V_CC
V
0.8
V
V
0.2 × V_CC
V
(5) Two CW tones at an offset from LO frequency smaller than the baseband filter cutoff frequency.
(6) Single CW tone at an offset from LO smaller than the baseband filter cutoff frequency.
(7) Two tones at F_RF1 = F_LO ±900 kHz and F_RF2= F_LO ±1 MHz; IM₂ product measured at 100-kHz output frequency (for Min baseband filter
1-dB cutoff frequency). The 2 tones are at F_RF1 = F_LO ±2.7 MHz and F_RF2 = F_LO ±2.8 MHz, and the IM₂ product measured at 100 kHz
output frequency (for Max baseband filter 1-dB cutoff frequency).
(8) Baseband low pass filter 1-dB cutoff frequency is programmable through SPI between Min and Max value.
(9) Attenuation relative to passband gain.
(10) Across filter passband: 615 kHz (Min baseband filter cutoff frequency) and 1.92 MHz (Max baseband filter cutoff frequency).
Copyright © 2007, Texas Instruments Incorporated
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