MAX11270 Datasheet, PDF (34/46 Pages) Maxim Integrated Products – Integrated PGA

MAX11270
24-Bit, 10mW, 130dB SNR, 64ksps Delta-Sigma
ADC with Integrated PGA
Control 2 Register (Read/Write)
The CTRL2 register is an 8-bit read/write register. The byte written to the CTRL2 register determines the digital and
analog gain settings, and whether the buffers or PGA is enabled.
BIT
BIT NAME
DEFAULT
B07
DGAIN1
0
B06
DGAIN0
0
B05
BUFEN
0
B04
LPMODE
0
B03
PGAEN
0
B02
PGAG2
0
B01
PGAG1
0
B00
PGAG0
0
BIT DEFAULT LABEL
FUNCTION
00
0
01
0
02
0
PGA0
PGA1
PGA2
000 X1 PGA Gain-Setting bits
001 X2
010 X4
011 X8
100 X16
101 X32
110 X64
111 X128
03
0
PGAEN PGA Enable Bit. Set PGAEN = 1 to enable the PGA. Set PGAEN = 0 to disable the PGA.
04
0
LPMODE PGA Low Power. Set LPMODE = 1 for lower power. Set LPMODE = 0 for standard power.
05
0
BUFEN
Analog input buffer enable bit. Set BUFEN = 1 to enable the analog input buffers. Set BUFEN
= 0 to disable the analog input buffers.
00 x1 Modulator Digital Gain Bits
06
0
DGAIN0
01 x2
10 x4
07
0
DGAIN1
11 x8
www.maximintegrated.com
Maxim Integrated │  34