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參數(shù)資料
| 型號： | MAX2021ETX |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | High-Dynamic-Range, Direct Up-/Downconversion 750MHz to 1200MHz Quadrature Mod/Demod |
| 中文描述： | TELECOM, CELLULAR, BASEBAND CIRCUIT, QCC36 |
| 封裝： | 6 X 6 MM, TQFN-36 |
| 文件頁數(shù)： | 3/14頁 |
| 文件大小： | 242K |
| 代理商： | MAX2021ETX |
M
High-Dynamic-Range, Direct Up-/Downconversion
750MHz to 1200MHz Quadrature Mod/Demod
_______________________________________________________________________________________
3
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
RF INPUT
RF Frequency
Conversion Loss
Noise Figure
f
RF
L
C
NF
750
1200
MHz
dB
dB
f
BB
= 25MHz (Note 7)
f
LO
= 900MHz
f
BLOCKER
= 900MHz, P
RF
= 11dBm,
f
RF
= f
LO
= 890MHz (Note 8)
9.2
9.3
Noise Figure Under-Blocking
NF
BLOCK
17.8
dB
Input Third-Order Intercept
IIP3
f
RF1
= 925MHz, f
RF2
= 926MHz, f
LO
=
900MHz, P
RF
= P
LO
= 0dBm, f
SPUR
= 24MHz
35.2
dBm
Input Second-Order Intercept
IIP2
f
RF1
= 925MHz, f
RF2
= 926MHz, f
LO
=
900MHz, P
RF
= P
LO
= 0dBm, f
SPUR
= 51MHz
f
IF
= 50MHz, f
LO
= 900MHz, P
LO
= 0dBm
f
BB
= 1MHz, f
LO
= 900MHz, P
LO
= 0dBm
f
BB
= 1MHz,
f
LO
= 900MHz
76
dBm
Input 1dB Compression
I/Q Gain Mismatch
P
1dB
30
0.06
1.1
0.15
dBm
dB
P
LO
= 0dBm
P
LO
= -3dBm
I/Q Phase Mismatch
degrees
AC ELECTRICAL CHARACTERISTICS (Demodulator)
(MAX2021
Typical Application Circuit
when operated as a demodulator, V
CC
= +4.75V to +5.25V, GND = 0V, differential baseband out-
puts converted to a 50
single-ended output, P
RF
= P
LO
= 0dBm, 750MHz
≤
f
LO
≤
1200MHz, 50
LO and RF system impedance, R1 =
432
, R2 = 619
, R3 = 332
, T
C
= -40°C to +85°C. Typical values are at V
CC
= +5V, T
C
= +25°C, unless otherwise noted.) (Notes 1, 2)
AC ELECTRICAL CHARACTERISTICS (Modulator) (continued)
(MAX2021
Typical Application Circuit
, V
CC
= +4.75V to +5.25V, GND = 0V, I/Q differential inputs driven from a 100
DC-coupled
source, 0V common-mode input, P
LO
= 0dBm, 750MHz
≤
f
LO
≤
1200MHz, 50
LO and RF system impedance, R1 = 432
, R2 = 619
,
R3 = 332
, T
C
= -40°C to +85°C. Typical values are at V
CC
= +5V, V
BBI
= 1.4V
P-P
differential, V
BBQ
= 1.4V
P-P
differential, f
IQ
= 1MHz,
f
LO
= 900MHz, T
C
= +25°C, unless otherwise noted.) (Notes 1, 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
ACLR (1st Adjacent Channel
5MHz Offset)
Single-carrier WCDMA (Note 4)
65
dBc
LO Leakage
No external calibration, with each
baseband input terminated in 50
-32
dBm
P
LO
= 0dBm
P
LO
= -3dBm
30
39.6
43.5
-174
-168
15
Sideband Suppression
No external calibration,
f
LO
= 920MHz
E ach b aseb and inp ut ter mi nated i n 50
(N ote 5)
P
OUT
= 0dBm, f
LO
= 900MHz (Note 6)
(Note 3)
dBc
Output Noise Density
Output Noise Floor
RF Return Loss
dBm/Hz
dBm/Hz
dB
Note 1:
Guaranteed by design and characterization.
Note 2:
T
C
is the temperature on the exposed paddle.
Note 3:
Parameter also applies to demodulator topology.
Note 4:
Single-carrier WCDMA with 10.5dB peak-to-average ratio at 0.1% complementary cumulative distribution function,
P
RF
= -10dBm (P
RF
is chosen to give -65dBc ACLR).
Note 5:
No baseband drive input. Measured with the inputs terminated in 50
. At low output levels, the output noise is thermal.
Note 6:
The output noise versus P
OUT
curve has the slope of LO noise (Ln dBc/Hz) due to reciprocal mixing.
Note 7:
Conversion loss is measured from the single-ended RF input to single-ended combined baseband output.
Note 8:
The LO noise (L = 10
(Ln/10)
), determined from the modulator measurements can be used to deduce the noise figure under-
blocking at operating temperature (Tp in Kelvin), F
BLOCK
= 1 + (Lcn - 1) Tp / To + LP
BLOCK
/ (1000kTo), where To = 290K,
P
BLOCK
in mW, k is Boltzmann’s constant = 1.381 x 10
(-23)
J/K, and Lcn = 10
(Lc/10)
, Lc is the conversion loss. Noise figure
under-blocking in dB is NF
BLOCK
= 10 x log (F
BLOCK
). Refer to
Application Note 3632
.
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