DLPU041G April 2016 – July 2024 DLPC230-Q1 , DLPC230S-Q1
This command is used to configure TPS99000-Q1 transimpedance amplifier 2 (TIA2).
Write Parameters
BYTE | BITS | DESCRIPTION |
---|---|---|
1 | 0 | Enable Enables TIA2. When disabled, TIA2 enters a low power state. 0x0: Disable 0x1: Enable |
2 | 3:0 | Gain Index Table 8-95 defines the gain level settings. |
3 | 7:0 | Trim Trim gain = 1 – N * (0.8 / 255) 0x0: 1.0x 0xFF: 0.2x |
4 | 2:0 | Input Offset Offset = (N+1) * 20mV 0x7 = 0mV. This value is an exclusion from the formula above and should not be used because the amplifier requires offset. |
5 | 7:0 | Dark Offset Offset = N * 1.5mV |
6 | 5:0 | Capacitance Capacitance = N * 0.5pF 0x0: 0.0 pF 0x3F: 31.5 pF |
7 | 1:0 | Stage Monitor Select Voltage monitor point within TIA2. Input to ADC31. 0x0: Stage A (Input offset output, Trim input) 0x1: Stage B (Trim output, Dark offset input) 0x2: Stage C (Gain #2 output, Gain #3 input) 0x3: Stage D (Gain #3 output, TIA output) |
GAIN INDEX | GAIN (kV/A)(1) |
---|---|
0 | 0.75 |
1 | 1.5 |
2 | 3 |
3 | 6 |
4 | 9 |
5 | 12 |
6 | 18 |
7 | 24 |
8 | 36 |
9 | 48 |
10 | 72 |
11 | 96 |
12 | 144 |
13 | 288 |