Datasheet

±500
±400
±300
±200
±100
0
100
200
300
400
500
0 50 100 150 200 250
DAC Step Error (A)
TX LED DAC Setting
C035
TX_REF = 0.5V
0
20
40
60
80
100
0 50 100 150 200 250
TX Current (mA)
TX LED DAC Setting
Expected + 1%
Actual DAC Current
Expected - 1%
C036
TX Reference Voltage = 0.5V
±500
±400
±300
±200
±100
0
100
200
300
400
500
0 50 100 150 200 250
DAC Step Error (A)
TX LED DAC Setting
C033
TX_REF = 0.5V
±500
±400
±300
±200
±100
0
100
200
300
400
500
0 50 100 150 200 250
DAC Step Error (A)
TX LED DAC Setting
C034
TX_REF = 0.5V
±500
±400
±300
±200
±100
0
100
200
300
400
500
0 50 100 150 200 250
DAC Step Error (A)
TX LED DAC Setting
C031
TX_REF = 0.5V
±500
±400
±300
±200
±100
0
100
200
300
400
500
0 50 100 150 200 250
DAC Step Error (A)
TX LED DAC Setting
C032
TX_REF = 0.5V
AFE4490
SBAS602F –DECEMBER 2012–REVISED OCTOBER 2013 www.ti.com
TYPICAL CHARACTERISTICS (continued)
At T
A
= +25°C, RX_ANA_SUP = RX_DIG_SUP = 3.0 V, TX_CTRL_SUP = LED_DRV_SUP = 5 V, and f
CLK
= 8 MHz, unless
otherwise noted.
Figure 33. TRANSMITTER DAC CURRENT STEP ERROR Figure 34. TRANSMITTER DAC CURRENT STEP ERROR
(200 mA, Max) (150 mA, Max)
Figure 35. TRANSMITTER DAC CURRENT STEP ERROR Figure 36. TRANSMITTER DAC CURRENT STEP ERROR
(100 mA, Max)
(75 mA, Max)
Figure 37. TRANSMITTER DAC CURRENT STEP ERROR Figure 38. TRANSMITTER CURRENT LINEARITY
(50 mA, Max) (50-mA Range)
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