User Manual
MAX2700/MAX2701
1.8GHz to 2.5GHz Direct Downconversion
Receivers
6 _______________________________________________________________________________________
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2700/MAX2701 EV kit (Figure 3), V
CC
= +3.0V, T
A
= +25°C, SHDN = GAIN_SET = V
CC
, X2_EN = GND, CEXT+ connected to
CEXT-, P
LO
= -13dBm, F
LO
= 980MHz (MAX2700) and 1200MHz (MAX2701), P
LNAIN
= -30dBm, P
RFIN
= -25dBm, LNAIN and RFIN
(single-ended input to balun) driven from 50Ω source, LNAOUT terminated into load; MIX_I, MIX_Q AC-coupled to 2kΩ load; IIN1+,
QIN1+, IIN2+, QIN2+ driven from 1.1kΩ AC-coupled source; IOUT1, QOUT1 AC-coupled to 2kΩ; IOUT2, QOUT2 AC-coupled to
100Ω; input to VGAs, 20mVp-p at 1MHz tone, set V
AGC
= 1.25V, unless otherwise noted.)
PARAMETERS CONDITIONS
MIN
TYP
MAX
UNITS
IIN1+ to IOUT1, up to -1dB frequency 1.6
Group Delay
QIN1+ to QOUT1, up to -1dB frequency 1.6
ns
G r oup D el ay M i sm atch ( N ote 2) Between I and Q channel from 100kHz up to -1dB
0.3 1.3 ns
Output Impedance IOUT1, QOUT1, up to -1dB bandwidth 7 Ω
Output Impedance Mismatch Between IOUT1 and QOUT1, up to -1dB bandwidth 1 Ω
Output Voltage (Note 2) At -1dB compression point, IOUT1, QOUT1
0.7 1.1
Vp-p
BASEBAND STAGE 2 (IIN2+ TO IOUT2, QIN2+ TO QOUT2)
-1dB bandwidth (Note 2) 19 34
Channel Bandwidth
-3dB bandwidth 63
MHz
Input Impedance IIN2+, IIN2-, QIN2+, QIN2-, single-ended 2.1 KΩ
Input Impedance Mismatch Between IIN2+ and QIN2+
1.5
Ω
V
AGC
= 0.5V
-0.6
4.4 9.5
Voltage Gain (G
V
)
V
AGC
= 2.0V 37 39 42
dB
Gain Correction Disabled
0.9
Voltage Gain Mismatch
(Note 2)
M i sm atch b etw een IIN 2 to
IOU T2 and QIN 2 to
QOU T2, 0.5V < V
AGC
< 2V
Gain Correction Enabled
(2dB initial mismatch)
0.3
dB
VGA2 Gain Slope
Guaranteed monotonic over 0.5V < V
AGC
<2V,
V
AGC
=1.25V
30
dB/V
V
AGC
= 2.0V 14
Noise Figure Z
S
=
1.1kΩ
V
AGC
= 0.5V 47
dB
Phase shift (Note 2) For 10dB of gain 0.2 1.4
degrees
Group Delay IIN2+ to IOUT2, QIN 2+ to QOU T2, up to -1dB Frequency 1.7 ns
Group Delay Mismatch
(Note 2)
Between I and Q channel from 100kHz up to -1dB
frequency
0.2 2.0 ns
Output Impedance IOUT2 , QOUT2, up to -1dB bandwidth 4.0 Ω
Output Impedance Mismatch Between IOUT2 and QOUT2, up to -1 dB bandwidth 4.0 Ω
Output Voltage (Note 2) At -1dB compression point, IOUT2 , QOUT2 1.2 1.9
Vp-p