AFE8221 Datasheet, PDF (4/48 Pages) Texas Instruments – Dual IF Analog Front-End for Digital Radio

AFE8221
SBAS394A – APRIL 2007 – REVISED MARCH 2008
AUXILIARY DAC SPECIFICATIONS
At +25°C, AVDD, IOVDD = 3.3V, and DVDD = 1.8V, unless otherwise noted.
PARAMETER
RESOLUTION
Resolution
OUTPUT VOLTAGE RANGE
Output voltage range
SETTLING TIME
Settling time
DC PERFORMANCE
Offset
Gain error
DNL
INL
PSRR
TEST CONDITIONS
Input code 0x000
Input code 0x3FF
0.1% of FSR
Monotonic
Offset and gain errors removed
Input code 0x200, AVDD = 3.15VDC to
3.6VDC
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AFE8221
MIN
TYP MAX
UNIT
12
Bits
0
V
2.7
V
10
µs
±1
% of FSR
±5
% of FSR
±0.5
LSB
±3.0
LSB
30
dB
AUXILIARY ADC SPECIFICATIONS
At +25°C, AVDD, IOVDD = 3.3V, and DVDD = 1.8V, unless otherwise noted.
PARAMETER
RESOLUTION
Resolution
INPUT VOLTAGE RANGE
Input voltage range
INPUT IMPEDANCE
Input impedance
CONVERSION TIME
Conversion Time
DC PERFORMANCE
Offset
Gain error
DNL
INL
PSRR
TEST CONDITIONS
Input code 0x00
Input code 0xFF
Monotonic
Offset and gain errors removed
Midscale input, AVDD = 3.15VDC to 3.6VDC
AFE8221
MIN
TYP MAX
10
0
3.0
30
8704
±1.0
±1.5
–1.0
1.5
–1.5 ±0.5
1.5
30
UNIT
Bits
V
V
kΩ
MCLK
cycles
% of FSR
% of FSR
LSB
LSB
dB
4
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