LP1072 FREESCALE [Freescale Semiconductor, Inc], LP1072 Datasheet - Page 7

• Manufacturer Part Number: LP1072
• Description: 802.11a/b/g Baseband System Solution
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

3.4
The Analog Front End (AFE) block consists of three Analog-to-Digital Converters (ADCs) and two
Digital-to-Analog Converters (DACs) as given in
3.4.1
I/Q ADC specifications are shown in
Freescale Semiconductor
Auxiliary ADC
Auxiliary DAC
Resolution
Maximum Sampling Frequency
Signal Bandwidth
Input impedance
Latency
Integral Nonlinearity (INL)
Differential Nonlinearity (DNL)
Total Harmonic Distortion (THD)
SNR
ENOB
Channel-to-Channel mismatch
DC offset after calibration
Component
RSSI ADC
I/Q ADC
I/Q DAC
Analog Front End (AFE)
I/Q ADC
Parameter
A 2-channel ADC whose digital output serves as input to digital baseband
and whose input is the differential signal from the RF (RX mode).
A 2-channel DAC whose digital input is from baseband and output is a
differential signal for the RF (TX mode).
A single ended, single channel ADC
A single ended, single channel ADC
A single ended, single channel DAC
Fixed capacitance
Switched capacitance @Fs
Fin= 1MHz
Fin= 10MHz
Fin= 1MHz
Fin= 10MHz
Fin= 1MHz
Fin= 10MHz
Gain
Phase
LP1072 Advance Information, Rev. 0.3
Table 3. I/Q ADC Specifications
Table
Table 2. AFE Components
Condition
Description
3.
—
—
—
—
—
—
—
PRELIMINARY
Table
2.
Min
—
22
—
—
—
—
—
—
—
—
—
—
—
—
—
—
-1
± 0.5
-48.5
±1.0
48.5
Typ
-47
7.2
7.0
0.2
0.5
11
47
—
—
8
1
1
4
Resolution
8-bit
8-bit
6-bit
8-bit
8-bit
Functional Description
Max
+1
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
22 Msps
44 Msps
10 Msps
20 Msps
1 Msps
Clock
Degree
cycles
Units
MHz
MHz
LSB
LSB
LSB
pF
pF
dB
dB
dB
dB
dB
bit
bit
bit
7