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ADS4128 Datasheet(PDF) 22 Page - Texas Instruments

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Part # ADS4128
Description  12-Bit, 200-MSPS, Ultralow-Power ADC
PDF  61 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

ADS4128 Datasheet(HTML) 22 Page - Texas Instruments

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ADS4128
SBAS578 – MAY 2012
www.ti.com
SERIAL REGISTER MAP
Table 11 summarizes the functions supported by the serial interface.
Table 11. Serial Interface Register Map(1)
REGISTER
DEFAULT VALUE
ADDRESS
AFTER RESET
REGISTER DATA
A[7:0] (Hex)
D[7:0] (Hex)
D7
D6
D5
D4
D3
D2
D1
D0
00
00
0
0
0
0
0
0
RESET
READOUT
01
00
LVDS SWING
0
0
03
00
0
0
0
0
0
0
HIGH PERF MODE 1
DISABLE
25
00
GAIN
TEST PATTERNS
GAIN
LVDS
LVDS DATA
26
00
0
0
0
0
0
0
CLKOUT
STRENGTH
STRENGTH
EN
3D
00
DATA FORMAT
OFFSET
0
0
0
0
0
CORR
3F
00
CUSTOM PATTERN HIGH D[11:4]
40
00
CUSTOM PATTERN D[3:0]
0
0
0
0
EN
EN
CMOS CLKOUT
41
00
LVDS CMOS
CLKOUT
CLKOUT RISE POSN
CLKOUT
STRENGTH
RISE
FALL
DIS LOW
42
00
CLKOUT FALL POSN
0
0
STBY
0
0
LATENCY
PDN
43
00
0
0
PDN OBUF
0
0
EN LVDS SWING
GLOBAL
HIGH PERF
4A
00
0
0
0
0
0
0
0
MODE 2
BF
00
OFFSET PEDESTAL
0
0
FREEZE
CF
00
OFFSET
0
OFFSET CORR TIME CONSTANT
0
0
CORR
DF
00
0
0
LOW SPEED
0
0
0
0
(1)
Multiple register functions can be programmed in a single write operation.
DESCRIPTION OF SERIAL REGISTERS
For best performance, two special mode register bits must be enabled:
HI PERF MODE 1 and HI PERF MODE 2.
Register Address 00h (Default = 00h)
7
6
5
4
3
2
1
0
0
0
0
0
0
0
RESET
READOUT
Bits[7:2]
Always write '0'
Bit 1
RESET: Software reset applied
This bit resets all internal registers to default values and self-clears to 0 (default = 1).
Bit 0
READOUT: Serial readout
This bit sets the serial readout of the registers.
0 = Serial readout of registers disabled; the OVR_SDOUT pin functions as an over-voltage
indicator.
1 = Serial readout enabled; the OVR_SDOUT pin functions as a serial data readout.
22
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Copyright © 2012, Texas Instruments Incorporated
Product Folder Link(s): ADS4128



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