ADPD188BI Smoke Alarm Application with External PTC Input

Hi everyone, I have a problem with ADPD188BI,

Currently, I can detect smoke by communicating with this sensor with my custom board. But I want to use EXT_IN for reading temperature with ptc sensor. 
When I add the temperature sensor, the values ​​of my smoke sensor change in slot a and slot b, it means that the ptc is effecting my sensor data, 
but
I want to read sensor and ptc data separately. How can i do this (I am using 100k ohm ptc and connect series 137k ohm resistor)

My register settings are as follows;

{ADPD188BI_REG_INT_MASK, 0xC0FF},
{ADPD188BI_REG_GPIO_DRV, 0x0005},
{ADPD188BI_REG_FIFO_THRESH, 0x0F00},
{ADPD188BI_REG_SW_RESET, 0x0000},
{ADPD188BI_REG_SLOT_EN, 0x3021},
{ADPD188BI_REG_FSAMPLE, 0x0004},
{ADPD188BI_REG_PD_LED_SELECT, 0x011D},
{ADPD188BI_REG_NUM_AVG, 0x0000},
{ADPD188BI_REG_BG_MEAS_A, 0x3000},
{ADPD188BI_REG_INT_SEQ_A, 0x0009},
{ADPD188BI_REG_SLOTA_CH1_OFFSET, 0x0000},
{ADPD188BI_REG_SLOTA_CH2_OFFSET, 0x3FFF}, // NORMAL 0x3FFF
{ADPD188BI_REG_SLOTA_CH3_OFFSET, 0x3FFF},
{ADPD188BI_REG_SLOTA_CH4_OFFSET, 0x3FFF},
{ADPD188BI_REG_BG_MEAS_B, 0x3000},
{ADPD188BI_REG_INT_SEQ_B, 0x0009},
{ADPD188BI_REG_SLOTB_CH1_OFFSET, 0x0000},
{ADPD188BI_REG_SLOTB_CH2_OFFSET, 0x3FFF},
{ADPD188BI_REG_SLOTB_CH3_OFFSET, 0x3FFF},
{ADPD188BI_REG_SLOTB_CH4_OFFSET, 0x3FFF},
{ADPD188BI_REG_ILED3_COARSE, 0x3539},
{ADPD188BI_REG_ILED1_COARSE, 0x3536},
{ADPD188BI_REG_ILED2_COARSE, 0x1530},
{ADPD188BI_REG_ILED_FINE, 0x630C},
{ADPD188BI_REG_SLOTA_LED_PULSE, 0x0320},
{ADPD188BI_REG_SLOTA_NUMPULSES, 0x040E},
{ADPD188BI_REG_LED_DISABLE, 0x0000},
{ADPD188BI_REG_SLOTB_LED_PULSE, 0x0320},
{ADPD188BI_REG_SLOTB_NUMPULSES, 0x040E},
{ADPD188BI_REG_SLOTA_AFE_WINDOW, 0x22F0},
{ADPD188BI_REG_SLOTB_AFE_WINDOW, 0x22F0},
{ADPD188BI_REG_AFE_PWR_CFG1, 0x31C6},
{0x03D, 0x0000}, // BİLİNMİYOR
{ADPD188BI_REG_SLOTA_TIA_CFG, 0x1C74},
{ADPD188BI_REG_SLOTA_AFE_CFG, 0xADA5},
{ADPD188BI_REG_SLOTB_TIA_CFG, 0x1C74},
{ADPD188BI_REG_SLOTB_AFE_CFG, 0xADA5},
{ADPD188BI_REG_SAMPLE_CLK, 0x269A},
{0x04C, 0x0004}, // BİLİNMİYOR
{ADPD188BI_REG_CLK32M_ADJUST, 0x0090},
{ADPD188BI_REG_EXT_SYNC_SEL, 0x2090},
{ADPD188BI_REG_AFE_PWR_CFG2, 0x0AA0},
{ADPD188BI_REG_TIA_INDEP_GAIN, 0x0000},
{ADPD188BI_REG_MATH, 0x0544},
{ADPD188BI_REG_FLT_CONFIG_B, 0x0808},
{ADPD188BI_REG_FLT_LED_FIRE, 0x0010},
{ADPD188BI_REG_FLT_CONFIG_A, 0x0808},
{ADPD188BI_REG_DATA_ACCESS_CTL, 0x0001}