IFRIFT3000 Ver la hoja de datos (PDF) - QUALCOMM Incorporated
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componentes Descripción
Lista de partido
IFRIFT3000 Datasheet PDF : 4 Pages
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3
FM_MOD
TXIF_OUT
TXIF_OUT/
VCONTROL
TXVCO_T1
TXVCO_T2
* SBCK_SEL2
* SBST_IDLE/
* SBDT_FM/
SBI_EN
FM
LPF
AGC
S
RBIAS
LPF
LPF
TX
IQ
VCO
DIV 2
PLL
Serial Bus Interface
and
Control Logic
Analog
Multiplexer
8-BIT
8
DAC
2
8-BIT
DAC
GP
ADC
TXD[7:0]
TX_CLK
TX_CLK/
TCXO
PD_OUT
PD_ISET
LOCK_DET
ADC_ENABLE
ADC_DATA
ADC_CLK
* Dual-function pins
SEL1_PA_ON ADC_IN1 ADC_IN2
ADC_IN3
IFT3000 Functional Block Diagram
IFT3000
The circuit blocks within the IFT3000 device
include digital-to-analog converters (DACs) for
converting digital baseband to analog baseband,
lowpass filters, a mixer for upconverting to IF and
an 85 dB dynamic range Tx AGC amplifier. The
IFT3000 device includes a fully programmable
phase-locked loop (PLL) for generating Tx LO and IF frequencies. The
IFT3000 device also has an 8-bit general-purpose ADC with three
selectable inputs for monitoring battery level, RF signal strength and
phone temperature.
IFT3000 Device Features
• Supports IS-98 (CDMA) and IS-19 (AMPS) standards for dual-mode
operation
• Operates on 2.7 to 3.15 V supply voltage
• 8-bit DACs convert digital baseband signals to analog baseband
• CDMA and FM signal paths include lowpass filters for I and Q
output waveform smoothing
• IF mixer upconverts analog baseband to IF
• Tx power control through 85 dB dynamic range AGC amplifier
• Programmable Tx PLL for generating Tx IF frequency
• VCO for generation of Tx LO mixing signal
• 8-bit general-purpose ADC with 3-input analog multiplexer and
selectable input ranges
• Operational Mode compatibility with the MSM2300 and MSM3000
devices
• Enhanced features with MSM3000 device through three-line serial
bus interface (SBI):
– Tx PLL phase-detector polarity
– Tx PLL programmability
– Punctured CDMA transmission
– Selective power-down
– Mode selection
• 48-lead LQFP and 48-pin BCC packaging options for dense circuit
assemblies
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