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부품번호 | U2795B 기능 |
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기능 | 2.5-GHz Double balanced Mixer | ||
제조업체 | ATMEL Corporation | ||
로고 | |||
전체 14 페이지수
Features
• Supply-voltage Range: 2.7 V to 5.5 V
• Single-ended Output, no Balun Required
• Single-ended Input for RF and LO
• Excellent Isolation Characteristics
• Power-down Mode
• IP3 and Compression Point Programmable
• 2.5-GHz Operating Frequency
Benefits
• Reduced System Costs as only Few External Component (no Balun) are Required
• Small Package
• Very Low Current Consumption
• Easy to Use
Electrostatic sensitive device.
Observe precautions for handling.
Description
The U2795B is a 2.5-GHz mixer for WLAN and RF telecommunications equipment,
e.g., DECT and PCN. The IC is manufactured using Atmel's advanced bipolar technol-
ogy. A double-balanced approach was chosen to assure good isolation characteristics
and a minimum of spurious products. The input and output are single-ended, and their
characteristics are programmable. No output transformer or balun is required.
Figure 1. Block Diagram
2
RFi
VS
R2
5 IFo
3
P
R1
VH
4 So
VR
VH Voltage
regulator
8 PD
2.5-GHz
Double-
balanced
Mixer
U2795B
7
LO i
61
GND
VS
Rev. 4654A–CELL–01/03
1
Electrical Characteristics
VS = 3 V, fLOi = 1 GHz, IF = 900 MHz, RF = 100 MHz, RP = ¥, system impedance Zo = 50 W, Tamb = 25°C, RT = 56 W
reference point Pin 6, unless otherwise specified
No. Parameters
Test Conditions
Pin Symbol Min. Typ. Max. Unit
1.1 Supply voltage range
1.2
Supply Current
VS = 2.7 V
1.3 Conversion Supply
Current
RL = 50 W, RT = ¥
RL = 50 W, RT = 56 W
2 Operating Frequencies
1
1
1
1
VS
IS
IS
PGC
PGC
2.7 5.5 V
9 13 mA
3 6.2 mA
9 dB
4 dB
2.1 RFi frequency
2.2 LOi frequency
2.3 IFo frequency
3 Isolation
2 RFi
7 fLOi
5 fIFo
10
50
50
2500
2500
2500
MHz
MHz
MHz
3.1 LO spurious at RFi
3.2 RFi to LOi
3.3 LO spurious at IFo
3.4 IFo to LOi
4 Output (IF)
PiLO = -10 to 0 dBm
PiRF = -25 dBm
PiLO = -10 to 0 dBm
7, 2
2, 7
5, 7
5, 7
ISLO–RF
ISRF–LO
ISLO–IF
ISIF–LO
-30 dBm
35 dB
-25 dBm
30 dB
4.1 Output compression
point
5 CPO
-10 dBm
5 Input (RF)
5.1 Input impedance
5.2 Input compression point
5.3 3rd-order input
intercept point
2 ZRFi
2 CPi
2 IIP3
700||0.8
-14
-4
W||pF
dBm
dBm
6 Input (LO)
6.1 LO level
7 Voltage Standing Wave Ratio (VSWR)
7 PiLO
-6 dBm
7.1 Input LO
7.2 Output IF
8 Noise Performance
7 VSWRLOi
4 VSWRIFo
<2
<2
8.1 Noise figure
9 Power-down Mode
PiLO = 0 dBm, RT = ¥
NF
10 dB
9.1 Supply current
VPU < 0.5V
VPU = 0 V
10 Power-down Voltage
1 ISPU
30 µA
< 5 µA
10.1 “Power ON”
VS = 3.5 to 5.5 V
VS = 2.7 to 3.5 V
8
VPON
VS -0.5
VS
VS + 0.5
VS + 0.5
V
V
10.2 “Power DOWN”
8 VPDN
1V
10.3 Power-down current
Power ON
Power DOWN
8
IPON
IPDN
0.15
<5
0.22
mA
µA
10.4 Settling time
5,8 tsPD
< 30
µs
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
Type*
A
A
A
B
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
B
B
D
D
D
A
D
D
4 U2795B
4654A–CELL–01/03
4페이지 U2795B
Figure 7. Gain versus IF Output Frequency, LO Level: -6 dBm, RF: 130 MHz, -35 dBm;
Parameter: RF Input Termination
18
14
10 without RT
with RF input matching
LS = 220 nH, Cp = 4.7 pF
6
2
with RT = 56 W
-2
0 500 1000 1500 2000 2500
IF (MHz)
Figure 8. IIP3 versus IF Output Frequency, LO Level: -6 dBm; RF: 130 MHz/
130.1 MHz, -35 dBm; Parameter: RF Input Termination
0
-2
-4
-6
-8
-10
-12
-14
-16
-18
0
wit hout RT
wit h RT = 56 W
with RF input matching
LS = 220 nH, Cp = 4.7 pF
50 0
1000
1500
IF (MHz)
2000
2 50 0
4654A–CELL–01/03
7
7페이지 | |||
구 성 | 총 14 페이지수 | ||
다운로드 | [ U2795B.PDF 데이터시트 ] |
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
U2795B | 2.5-GHz Double Balanced Mixer | TEMIC Semiconductors |
U2795B | 2.5-GHz Double balanced Mixer | ATMEL Corporation |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |