Chip with APD/SiPM read-out circuits ("Solar Sailer")
Project Members:
Vikas Vinayaka
James Mellott
Sachin P Namboodiri
Eric Monahan
Chip Schedule:
Submitted: 9-Apr-2018
Received: 10-Nov-2018
Chip Organization:
This chip, "Solar Sailer",
is designed in the AMS SiGe 0.35um BiCMOS process. This chip contains
circuits to interface with APD (avalanche photodiode) and SiPM
(silicon photomultiplier).
The following circuits are present on the
chip:
- Transimpedance amplifiers (TIA) - 2 types
- Comparators - 4 types
- 4-bit Flash analog-to-digital converter
- 10-bit serial-input digital-to-analog converter
- 4-bit current mode Flash analog-to-digital converter
- APD
- SiPM
Figure 1: Chip layout
Figure 2: Chip photomicrograph (click to enlarge)
Chip pin names and types:
This chip contains 60 pads/pins.
Pin numbers are annotated in chip layout above. Pins are grouped by circuits as below.
Individual TIAs - BJT and MOS based
Pin number
|
Pin name
| Pin type
|
1
|
tia_mos_bjt_vg_b1
| CMOS logic
|
2
|
tia_mos_vg_in
| Analog/high-speed
|
3
|
tia_mos_vg_vout
| Analog/high-speed
|
38
|
tia_bjt_vg_vout
| Analog/high-speed
|
39
|
tia_bjt_vg_in
| Analog/high-speed
|
40
|
tia_mos_bjt_vg_b0
|
CMOS logic
|
MOS based comparator
Pin number
|
Pin name
| Pin type
|
6
|
mos_comp_q
| Analog/high-speed
|
7
|
mos_comp_clk
| Digital/high-speed
|
8
|
mos_comp_vm
| Analog/high-speed
|
9
|
mos_comp_vp
| Analog/high-speed
|
Serial-input 10-bit R-2R DAC
Pin number
|
Pin name
| Pin type
|
12
|
r2r_dac_oen
| CMOS logic
|
13
|
r2r_dac_clk
| CMOS logic
|
14
|
r2r_dac_din
| CMOS logic
|
51
|
r2r_dac_vout
| Analog/high-speed
|
52
|
r2r_dac_rfb
|
Analog/high-speed |
TIA + comparator
Pin number
|
Pin name
| Pin type
|
15
|
mos_bjt_vg_comp_b1
| CMOS logic
|
16
|
mos_bjt_vg_comp_b0
| CMOS logic
|
17
|
mos_vg_comp_in
| Analog/high-speed
|
18
|
mos_vg_comp_out
| Analog/high-speed
|
19
|
mos_bjt_vg_comp_vref
| Analog/DC
|
20
|
mos_bjt_vg_comp_clk
|
Digital/high-speed |
21
|
bjt_vg_comp_in
|
Analog/high-speed |
22
|
bjt_vg_comp_out
|
Analog/high-speed |
TIA with APD
Pin number
|
Pin name
| Pin type
|
23
|
tia_mos_APD
| Analog/DC
|
24
|
tia_mos_vout
| Analog/high-speed
|
25
|
tia_bjt_APD
| Analog/DC
|
26
|
tia_bjt_vout
| Analog/high-speed
|
4-bit Flash ADC
Pin number
|
Pin name
| Pin type
|
27
|
flash_adc_clk
| Digital/high-speed
|
28
|
flash_adc_b0
| Digital/high-speed
|
29
|
flash_adc_b1
| Digital/high-speed
|
30
|
flash_adc_b2
| Digital/high-speed
|
31
|
flash_adc_b3
| Digital/high-speed
|
56
|
flash_adc_vrefm |
Analog/DC |
57
|
flash_adc_vin |
Analog/high-speed |
58
|
flash_adc_vrefp |
Analog/DC |
Current mode 4-bit Flash ADC
Pin number
|
Pin name
| Pin type
|
34
|
icomp_adc_b0
| Digital/high-speed
|
35
|
icomp_adc_b1
| Digital/high-speed
|
36
|
icomp_adc_b2
| Digital/high-speed
|
37
|
icomp_adc_b3 | Digital/high-speed
|
59
|
icomp_adc_iref
| Analog/DC
|
60
|
icomp_adc_iin
|
Analog/high-speed |
Individual comparators
Pin number
|
Pin name
| Pin type
|
41
|
bjt_comp_outp
| Analog/high-speed
|
42
|
sc_bjt_comp_clk
| Digital/high-speed
|
43
|
sc_bjt_comp_vinm
| Analog/high-speed
|
44
|
sc_bjt_comp_vinp
| Analog/high-speed
|
45
|
sc_comp_q
| Analog/high-speed
|
53
|
bjt_comp_bjt_ff_vinp
|
Analog/high-speed |
54
|
bjt_comp_bjt_ff_vinm |
Analog/high-speed |
55
|
bjt_comp_bjt_ff_voutp |
Analog/high-speed |
APD and SiPM
Pin number
|
Pin name
| Pin type
|
46
|
single_APD_cathode
| Analog/high-speed
|
47
|
single_APD_anode
| Analog/high-speed
|
48
|
sipm_array_substrate
| Ground
|
49
|
sipm_array_anode
| Analog/high-speed
|
50
|
sipm_array_hv
| Analog/high-speed
|
Power
Pin number
|
Pin name
| Pin type
|
4, 10, 32
|
vdd
| Power
|
5, 11, 33
|
gnd
| Ground
|
Return
