Datasheet

SPI COMMANDS
PGA112 , , PGA113
PGA116 , PGA117
www.ti.com ............................................................................................................................................ SBOS424B – MARCH 2008 – REVISED SEPTEMBER 2008
Table 3. SPI Commands (PGA112/PGA113)
(1) (2)
THREE-WIRE
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 SPI COMMAND
0 1 1 0 1 0 1 0 0 0 0 0 0 0 0 0 READ
0 0 1 0 1 0 1 0 G3 G2 G1 G0 CH3 CH2 CH1 CH0 WRITE
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 NOP WRITE
SDN_DIS
1 1 1 0 0 0 0 1 0 0 0 0 0 0 0 0
WRITE
1 1 1 0 0 0 0 1 1 1 1 1 0 0 0 1 SDN_EN WRITE
(1) SDN = Shutdown mode. Enter Shutdown mode by issuing an SDN_EN command. Shutdown mode is cleared (returned to the last valid
write configuration) by a SDN_DIS command or by any valid Write command.
(2) POR (Power-on-Reset) value of internal Gain/Channel Select Register is all 0s; this value sets Gain = 1, and Channel = V
CAL
/CH0.
Table 4. SPI Daisy-Chain Commands
(1) (2)
DAISY-CHAIN
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 COMMAND
0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 NOP
1 1 1 1 0 0 0 1 0 0 0 0 0 0 0 0 SDN_DIS
1 1 1 1 0 0 0 1 1 1 1 1 0 0 0 1 SDN_EN
0 1 1 1 1 0 1 0 0 0 0 0 0 0 0 0 READ
0 0 1 1 1 0 1 0 G3 G2 G1 G0 CH3 CH2 CH1 CH0 WRITE
(1) SDN = Shutdown Mode. Shutdown Mode is entered by an SDN_EN command. Shutdown Mode is cleared (returned to the last valid
write configuration) by a SDN_DIS command or by any valid Write command.
(2) POR (Power-on-Reset) value of internal Gain/Channel Register is all 0s; this value sets Gain = 1, V
CAL
/CH0 selected.
Table 5. Gain Selection Bits (PGA112/PGA113)
G3 G2 G1 G0 BINARY GAIN SCOPE GAIN
0 0 0 0 1 1
0 0 0 1 2 2
0 0 1 0 4 5
0 0 1 1 8 10
0 1 0 0 16 20
0 1 0 1 32 50
0 1 1 0 64 100
0 1 1 1 128 200
Copyright © 2008, Texas Instruments Incorporated Submit Documentation Feedback 27
Product Folder Link(s): PGA112 PGA113 PGA116 PGA117