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SSM3582

Data Sheet

Rev. 0| Page 34 of 59

INPUT LEVEL

LIMITER THRESHOLD SETTING

VBAT > VBAT_INF_x LIMITER

LIMITER THRESHOLD CHANGE FOR VBAT < VBAT_INF_x

CHANGE IN LIM THRESHOLD = N × (VBAT_INF_x – VBAT)

WHERE N = 1 TO 4, SET USING SLOPE BITS IN REG 0x0F, REG 0x12

LIM_EN_x = 01

VBAT_TRACK_x = 1

Figure 78. Limiter Fixed (LIM_EN_x = 0b01, VBAT_TRACK_x = 0b1)

VBAT

VBAT_INF_x

LIM_THRES_x

SLOPE

LIMITER THRESHOLD LOWERS

FOR VBAT < VBAT_INF_x

LIMITER THRESHOLD STAYS AT

THE SET VALUE FOR VBAT > VBAT_INF_x

Figure 79. Output Level vs. VBAT in Limiter Tracking Mode (LIM_EN_x = 0b01,

VBAT_TRACK_x = 0b1)

INPUT LEVEL

LIMITER THRESHOLD SETTING

NO CHANGE IN LIM THRESHOLD PER VBAT

AMPLIFIER CLIPPING LEVEL

LIM_EN_x = 11

VBAT_TRACK_x = 0

Figure 80. Limiter Example (LIM_EN_x = 0b11, VBAT_TRACK_x = 0)

VBAT

LIM_THRES_x

LIMITER THRESHOLD FIXED AT SET VALUE

AND DOES NOT TRACK VBAT

Figure 81. Limiter Fixed (LIM_EN_x = 0b11, VBAT_TRACK_x = 0b0)

INPUT LEVEL

LIMITER THRESHOLD SETTING

VBAT > VBAT_INF_x LIMITER IS NOT ACTIVE

LIMITER THRESHOLD CHANGE FOR VBAT < VBAT_INF

CHANGE IN LIM THRESHOLD = N × (VBAT_INF_x – VBAT)

WHERE N = 1 TO 4, SET USING SLOPE BIT IN REG 0x0F, REG 0x12

AMPLIFIER CLIPPING LEVEL

LIM_EN_x = 11

VBAT_TRACK_x = 1

Figure 82. Limiter Example (LIM_EN_x = 0b11, VBAT_TRACK_x = 0b1)

VBAT

VBAT_INF_x

SET LIM_THRES_x

SLOPE

LIMITER THRESHOLD LOWERS

FOR VBAT < VBAT_INF_x

LIMITER THRESHOLD INACTIVE FOR VBAT > VBAT_INF_x

Figure 83. Output Level vs. VBAT in Limiter Tracking Mode (LIM_EN_x = 0b11,

VBAT_TRACK_x = 0b1)

SSM3582 Datasheet(PDF) 34 Page - Analog Devices

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