Specifications
Table Of Contents
- Contents
- Tables
- Figures
- 1 Introduction
- 2 Interface Characteristics
- 2.1 Application Interface
- 2.2 RF Antenna Interface
- 2.3 Sample Application
- 3 Operating Characteristics
- 3.1 Operating Modes
- 3.2 Power Up/Power Down Scenarios
- 3.3 Power Saving
- 3.4 Power Supply
- 3.5 Operating Temperatures
- 3.6 Electrostatic Discharge
- 3.7 Blocking against RF on Interface Lines
- 3.8 Reliability Characteristics
- 4 Mechanical Dimensions, Mounting and Packaging
- 5 Regulatory and Type Approval Information
- 6 Document Information
- 7 Appendix
Cinterion
®
ELS81-US Hardware Interface Description
1.3 Circuit Concept
14
els81-us_hid_v01.004 2017-09-27
Confidential / Preliminary
Page 14 of 107
Figure 3: ELS81-US RF section block diagram
LTE / UMTS
RF transceiver
SKY77622
SKY13525
SKY13525
Band2
SAW
Filter
Band4
SAW
Filter
Band5
SAW
Filter
Band12
SAW
Filter
Diversity Antenna
Band2
Duplexer
Band4
Duplexer
Band5
Duplexer
Band12
Duplexer
Antenna
Coupler
B2_OUT
B4_OUT
B5_OUT
B12_OUT
4G_HB_IN
2G/3G_HB_IN
4G_LB_IN
2G/3G_LB_IN
TQ_H
TP_H
TQ_L
TP_L
RX_M1
RX_M1X
RX_H4
RX_H4X
RX_L1
RX_L1X
RX_L3
RX_L3X
4G_HB_IN
4G_HB_IN
4G_HB_IN
4G_HB_IN
TRX4
TRX6
TRX5
TRX2
TRX2
TRX1
TRX3
TRX5
PA DCDC
SKY87000
BATT+
RF
FBR_RF2
MAIN_FWD
MIPI
26MHz
RX/TX
BATT+
BB
V180
RF control