U2793B_06 Datasheet, PDF (5/13 Pages) ATMEL Corporation – 300-MHz Quadrature Modulator

U2793B
6. Electrical Characteristics (Continued)
Test conditions (unless otherwise specified); V_S = 5V, T_amb = 25°C, referred to test circuit.
System impedance Zo = 50Ω, f_LO =150 MHz, P_LO = -15 dBm, V_BBi = 1.0 V_pp, differential (Continued)
No. Parameters
Test Conditions
Pin Symbol Min.
Typ.
Max.
Unit Type*
4 RF Output, Pin 4
4.1 Output level
4.2 LO suppression
4.3 Voltage standing wave ratio
4.4 Sideband suppression⁽³⁾
4.5 Phase error⁽⁴⁾
f_LO = 150 MHz
V_BBi = 1 V_pp, differential
f_LO = 50 MHz
V_BBi = 0.3 V_pp, differential
P_LO = –20 dBM
–3
–1
+2
P_RFo
0
dBm A/B
LO_RFO
32
45
dB
A
VSWR_RF
1.4
2
D
SBS_RFo
35
45
dB
A
Pe
<1
deg
D
4.6 Amplitude error
Ae
< ±0.25
dB
D
4.7 Noise floor
5 Power-up Mode
V_BBi = 2V, V_BBi = 3V
V_BBi = V_BBi = 2.5V
N_FL
–137
–143
dBm/Hz D
5.1 Supply current
V_PU ≤0.5V, pins 6, 7
V_PU = 1V
I_PU
5.2 Settling time
Pins 1 to 4, C_SPU = 100 pF
C_{LO =} 100 pF, C_RFo = 1 nF
t_SPU
6 Switching Voltage, Pin 1
10
1
µA
D
10
µs
D
6.1 Power on
7 Reference Voltage, Pin 13
V_PUON
4
V
D
7.1 Voltage range
7.2 Output impedance
Notes: 1. Required LO level is a function of the LO frequency.
V_Ref
2.375 2.5 2.625
V
A
Zo_Ref
30
Ω
D
2. The LO input impedance is consisting of a 50 Ω resistor in series with a 15 pF capacitor.
3. With the pins 19 and 20 spurious performance especially for low frequency application can be improved by adding a chip
capacitor between LP1 and LP2. In conjunction with a parallel resistor the output level can be adjusted to the following
mixer stage without degration of LO suppression and noise performance which would decrease if the I/Q input level is
reduced.
4. For T_amb = –40°C to +85°C and V_S = 4.5V to 5.5V
5
4651E–CELL–07/06