SSM3515CCBZ-R7 datasheet(27/41 Pages) AD

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Data Sheet

SSM3515

Rev. A| Page 27 of 41

INPUT LEVEL

LIMITER THRESHOLD SETTING

VBAT > VBAT_INF LIMITER

LIMITER THRESHOLD CHANGE FOR VBAT < VBAT_INF

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

WHERE N = 1 TO 4, SET USING SLOPE BIT IN REG 0x08

LIM_EN = 01

VBAT_TRACK = 1

Figure 69. Limiter Fixed (LIM_EN = 0b01, VBAT_TRACK = 0b1)

VBAT

VBAT_INF

LIM_THRES

SLOPE

LIMITER THRESHOLD LOWERS

FOR VBAT < VBAT_INF

LIMITER THRESHOLD STAYS AT

THE SET VALUE FOR VBAT > VBAT_INF

Figure 70. Output Level vs. VBAT in Limiter Tracking Mode (LIM_EN = 0b01,

VBAT_TRACK = 0b1)

INPUT LEVEL

LIMITER THRESHOLD SETTING

NO CHANGE IN LIM THRESHOLD PER VBAT

AMPLIFIER CLIPPING LEVEL

LIM_EN = 11

VBAT_TRACK = 0

Figure 71. Limiter Example (LIM_EN = 0b11, VBAT_TRACK = 0)

VBAT

LIM_THRES

LIMITER THRESHOLD FIXED AT SET VALUE

AND DOES NOT TRACK VBAT

Figure 72. Limiter Fixed (LIM_EN = 0b11, VBAT_TRACK = 0b0)

INPUT LEVEL

LIMITER THRESHOLD SETTING

VBAT > VBAT_INF LIMITER IS NOT ACTIVE

LIMITER THRESHOLD CHANGE FOR VBAT < VBAT_INF

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

WHERE N = 1 TO 4, SET USING SLOPE BIT IN REG 0x08

AMPLIFIER CLIPPING LEVEL

LIM_EN = 11

VBAT_TRACK = 1

Figure 73. Limiter Example (LIM_EN = 0b11, VBAT_TRACK = 0b1)

VBAT

VBAT_INF

SET LIM_THRES

SLOPE

LIMITER THRESHOLD LOWERS

FOR VBAT < VBAT_INF

LIMITER THRESHOLD INACTIVE FOR VBAT > VBAT_INF

Figure 74. Output Level vs. VBAT in Limiter Tracking Mode (LIM_EN = 0b11,

VBAT_TRACK = 0b1)

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