AFE4490 datasheet(16/69 Pages) TI

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±50

±40

±30

±20

±10

100

Input signal frequency, Hz

5% Duty cycle

25% Duty cycle

C033

100

Temperature, C

STG2=DIS, 5Hz BW (Note 2)

STG2=EN, 5Hz BW (Note 3)

STG2=DIS, 20Hz BW (Note 2)

STG2=EN, 20Hz BW (Note 3)

C031

PRF = 1200 Hz, Duty cycle = 10%

1) RF = 100K, Stage 2 & ambient cancellation disabled

2) RF = 500K, Stage 2 & ambient cancellation enabled with stage 2 gain = 4

Temperature, C

STG2=DIS, 5Hz BW (Note 2)

STG2=EN, 5Hz BW (Note 3)

STG2=DIS, 20Hz BW (Note 2)

STG2=EN, 20Hz BW (Note 3)

C032

PRF = 1200 Hz, Duty cycle = 10%

1) RF = 100K, Stage 2 & ambient cancellation disabled

2) RF = 500K, Stage 2 & ambient cancellation enabled with stage 2 gain = 4

0.00

20.00

40.00

60.00

80.00

100.00

0.50

0.75

1.00

TX_VREF, V

TX_CTRL_SUP

LED_DRV_SUP

C029

TX_CTRL_SUP = LED_DRV_SUP = 3V TO 3.6V

100

150

200

250

300

350

400

450

500

550

600

650

700

Temperature, C

RX_ANA_SUP (STG2DIS)

RX_ANA_SUP (STG2EN)

RX_DIG_SUP

TX_CTRL_SUP

LED_DRV_SUP

C030

AFE4400

SBAS601D – DECEMBER 2012 – REVISED MAY 2013

www.ti.com

TYPICAL CHARACTERISTICS (continued)

At TA = +25°C, RX_ANA_SUP = RX_DIG_SUP = 3.0 V, TX_CTRL_SUP = LED_DRV_SUP = 3.3 V, and fCLK = 8 MHz, unless

otherwise noted.

Figure 27. TRANSMITTER SUPPLIES vs TX_REF

Figure 28. POWER SUPPLIES vs TEMPERATURE

Figure 29. INPUT-REFERRED NOISE vs TEMPERATURE

Figure 30. NOISE-FREE BITS vs TEMPERATURE

Figure 31. FILTER RESPONSE vs DUTY CYCLE

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