
SBOS531D – AUGUST 2010 – REVISED MAY 2012
ELECTRICAL CHARACTERISTICS: Transmitter (Tx)
At TJ = +25°C, PA_VS = 16 V, VAVDD = VDVDD = 3.3 V, and 10 kΩ connected to PA_ISET (pin 46), unless otherwise noted.
AFE031
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
Tx_DAC
Output range
GND + 0.1
AVDD – 0.1
V
Resolution
1,024 steps, 10-bit DAC
3.2
mV
Total harmonic distortion at
THD
62.5 kHz(1)
Second harmonic distortion
–73
dB
Third harmonic distortion
–56
dB
Fourth harmonic distortion
–94
dB
Data rate
1.5
MSPS
Tx_PGA
Input
Input voltage range
GND – 0.1
AVDD + 0.1
V
G = 1 V/V
58
k
Ω
G = 0.707 V/V
68
k
Ω
Input resistance
RI
G = 0.5 V/V
77
k
Ω
G = 0.25 V/V
92
k
Ω
Frequency Response
DAC mode enabled
G = 1 V/V
8
MHz
Bandwidth
BW
G = 0.707 V/V
9
MHz
G = 0.5 V/V
10
MHz
G = 0.25 V/V
12
MHz
Output
Voltage output swing from
VO
RLOAD = 10 kΩ, connected to AVDD/2
10
100
mV
AGND or AVDD
Sourcing
25
mA
Maximum continuous
IO
current, dc
Sinking
25
mA
Output resistance
RO
f = 100 kHz
1
Ω
Gain
Gain error
For all gains
–1
±0.1
+1
%
Gain error drift
TJ = –40°C to +125°C
6
ppm/°C
(1)
Total harmonic distortion measured at output of Tx_PGA configured in a gain of 1 V/V with an amplitude of 3 VPP, at a 1-MHz sample
rate.
Copyright 2010–2012, Texas Instruments Incorporated
3
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AFE031