S1M8674 Samsung Semiconductor, Inc., S1M8674 Datasheet

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S1M8674

Manufacturer Part Number
S1M8674
Description
Manufacturer
Samsung Semiconductor, Inc.
Datasheet
TX RF FRONTS-ENDS IC
INTRODUCTION
S1M8674 is a fully integrated RF transmit IC for CDMA handsets. It includes
an upconverter, a two-stage driver amplifier, and an LO buffer in
20TSSOP/24QFN (with exposed paddle) package. The driver amplifier
delivers over 4dBm output power with -65 dBc/30kHz ACPR while drawing
total current of under 40mA from 3.0V supply. The maximum output power is
larger than 10dBm for AMPS application. The gain of the driver amplifier can
be changed by an amount in 30dB to compensate for the gain variation of on-
chip & off-chip component ICs. The driver amplifier saves current at typical
condition due to the class AB operation.
The S1M8674 is ideally suited for CDMA/AMPS handset applications for low
power consumption.
The S1M8674 is fabricated using Samsung's 0.5 m BiCMOS process with low
cost and high yield.
the S1M8674 on 20TSSOP/24QFN PKG are shown in Figure 2a and 2b,
respectively. The pin description is found in table 1a and 1b, respectively. The
absolute maximum ratings of the S1M8674 are provided in Table 2, the
recommended operating conditions are specified in Table 3, and electrical
specifications are provided in Table 4.
FEATURES
ORDERING INFORMATION
+ : New product
APPLICATIONS
The device package is shown in Figure 1. The block diagram and pin out of
Supports CDMA/AMPS application (824 to 849 MHz)
30 dB gain control range of the driver amplifier to compensate for the gain variation of on-chip & off-chip
components
Power amplifier driver which has high linearity
Power down control of the entire chip
20-Pin TSSOP/24-Pin QFN w/exposed paddle package
13 dB Attenuator is included for wide dynamic range.
Cellular CDMA/AMPS Hand-Held Phone
+ S1M8674X01-G0T0
+ S1M8674X01-V0T0
Device
20-eTSSOP-BD44
24-QFN-3.5 4.5
Package
Operating Temperature
-30 to +80 C
-30 to +80 C
20-eTSSOP-BD44
24-QFN-3.5 4.5
S1M8674
1

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S1M8674 Summary of contents

Page 1

... TX RF FRONTS-ENDS IC INTRODUCTION S1M8674 is a fully integrated RF transmit IC for CDMA handsets. It includes an upconverter, a two-stage driver amplifier, and an LO buffer in 20TSSOP/24QFN (with exposed paddle) package. The driver amplifier delivers over 4dBm output power with -65 dBc/30kHz ACPR while drawing total current of under 40mA from 3.0V supply. The maximum output power is larger than 10dBm for AMPS application ...

Page 2

... CC LO_in 3 V _bias_m CC 4 GND_bias 5 Drv_out 6 7 GND_rf2 V _bias_rf _drv1 9 CC Gain_cntl 10 Figure 1. S1M8674 RF transmit IC Block Diagram and Pinout (20TSSOP-ePAD) 2 Attenuator Upconverter Driver Amplifier Gain_Control TX RF FRONTS-ENDS IC IF_inn 20 V _mix 19 CC RF_outn 18 RF_outp 17 V _bias_d 16 CC Ref_m 15 14 Drv_in ...

Page 3

... BLOCK DIAGRAM & PIN CONNECTIONS (24QFN-TYPE ) V _lo 1 CC LO_in 2 GND 3 V _bias_m 4 CC Drv_out 5 GND_rf2 6 7 GND V _bias_rf _drv1 CC 9 Figure 2. S1M8674 RF transmit IC Block Diagram and Pinout (24QFN Attenuator Upconverter Driver Amplifier Gain_Control S1M8674 V _mix 21 CC RF_outp 20 RF_outn 19 GND 18 V _bias_d 17 CC Ref_m ...

Page 4

... S1M8674 PIN FUNCTION DESCRIPTION (20TSSOP-ePAD) Pin no. Pin Name Type IF_inp 1 Input V 2 CC_lo LO_in 3 Input V 4 CC_bias_m GND_bias 5 GND Drv_out 6 Output GND_rf2 7 GND V 8 CC_bias_rf V 9 CC_drv1 Gain_cntl 10 Input Ref_d 11 Enable 12 Input GND_rf1 13 GND Drv_in 14 Input Ref_m CC_bias_d RF_outp 17 Output ...

Page 5

... The input IF pin for 130.38MHz IF frequency. This pin is connected to a internal attenuator input. The output of the attenuator is connected to the IF input of the CDMA/AMPS upconverter. This is a balanced input with Pin 24. The common GND connected to exposed paddle GND. The same as pin 22, except complementary input S1M8674 5 ...

Page 6

... Storage temperature RECOMMENDED OPERATING CONDITIONS Characteristic Supply voltage Operating temperature Logic 0 Logic 1 ESD SENSITIVITY The S1M8674 meets Human Body Model (HBM) < 150V and Machine Model (MM) < 75V. ESD data available upon request. Moisture Sensitivity Level (MSL) will be determined. 6 Symbol Value V -0 ...

Page 7

... Min. Typ. Max. 700 1000 10 800 1000 1200 824 925 - -16 - -40 10 0.01 S1M8674 Unit MHz dB dBm dBc dBc Units MHz dB MHz dB dB dBm dBc dB dB dBm ...

Page 8

... S1M8674 APPLICATION CIRCUIT (20TSSOP-EPAD) V _LO CC LO_in _bias_M _drv2 PWR SAW AMP _drv1 Gain_ctrl 8 AGC C15 C14 Attenuator Mixer 4 LO Buffer 5 6 Driver Amplifier Gain_Control 18k C1 = 1pF L7 15nH C2,C13,C16 = 20pF ...

Page 9

... C1 = 1pF C2,C13,C16 = 20pF C11 = 2pF,C12 = 3pF C9 = 2.2pF C3,C6 = 10nF C4,C5,C7,C10 = 120pF C14,C15 = 1nF 22 21 C13 L9 L10 20 19 Mixer 18 17 C10 L7 15nH L7,L8 = 15nH L9,L10 = 18nH L3 = 12nH L4 = 4.4nH L1,L5 = 8.2nH L6 = 2.2nH S1M8674 V _mix CC C11 C12 RF_out L8 V _bias_D CC L7 Drv_in C9 Enable 9 ...

Page 10

... S1M8674 10 NOTES TX RF FRONTS-ENDS IC ...

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