CTSD16INCHx
PGA
1..16
2nd Order
Σ∆ Modulator
CTSD16GAINx
CTSD16DF
CTSD16PRE0
9
0
CTSD16SC
CTSD16OSRx
CTSD16SNGL
CTSD16MEM
V
REF
fM = 1.024 MHz
REF
CTSD16GRP
Group/Start
Conversion Logic
Reference Generation
VREFBG/VeREF+
V
R
Pad
CTSD16REFS
~1.16V from
REF
-
+
BUF
A0
A3
AD0+
AD0-
AD1+
AD1-
AD2+
AD2-
AD3+
AD3-
AD4+
AD4-
Temp
Sense
AVCC
Sense
A1
A2
A5
A4
–
+
BUF
–
+
BUF
+
BUF
CTSD16CLK
+
Channel 0
up to Channel 1-6
A7
A6
CTSD16RRI
CTSD16RRI
0
15
VBAT
Sense
A8
AD4+
AD4-
V
REFBG VeREF+
/
DAC0
V
REFBG VeREF+
/
V
REFBG VeREF+
/
CTSD16 Introduction
797
SLAU208Q – June 2008 – Revised March 2018
Copyright © 2008–2018, Texas Instruments Incorporated
CTSD16
Figure 30-1. CTSD16 Block Diagram