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TLV1504 Datasheet(PDF) 16 Page - Texas Instruments

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Part No. TLV1504
Description  2.7 V TO 5.5 V, 10-BIT, 200 KSPS, 4/8 CHANNEL, LOW POWER, SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH AUTO POWER DOWN
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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TLV1504 Datasheet(HTML) 16 Page - Texas Instruments

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TLV1504, TLV1508
2.7 V TO 5.5 V, 10-BIT, 200 KSPS, 4/8 CHANNEL, LOW POWER,
SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH AUTO POWER DOWN
SLAS251 – DECEMBER 1999
16
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
modes using the FIFO: modes 01, 10, 11 timing (continued)
Mode 10 (sweep mode) requires reconfiguration at the start of each new sweep sequence. Once the FIFO is
filled up to the programmed threshold, the host has the option to either read the FIFO or configure for other
modes. Once the FIFO is read, the host must reconfigure the device before the next sweep sequence can be
started. So the sequence is either configure : triggered conversions : FIFO read : configure. or configure :
triggered conversions : configure : .... Each configure clears the FIFO and the action that follows the configure
command depends on the mode setting of the device.
Mode 11 (repeat sweep mode) requires one cycle configuration. This sweep sequence can be repeated without
reconfiguration. Once the FIFO is filled up to the programmed threshold, the host has the option to either read
the FIFO or configure for other modes. So the sequence is either configure : triggered conversions : FIFO read
: triggered conversions : FIFO read ... or configure : triggered conversions : configure : .... Each configure clears
the FIFO and the action that follows the configure command depends on the mode setting of the device.
CS
CSTART
SDI
INT
SDO
From Channel 0
FS
(DSP)
From Channel 3
Configure
Conversion
Conversion
Read FIFO
#1
#2
#3
#4
Top of FIFO
‡‡
tsample(1)
Read FIFO
#1
From Channel 0
Conversion
From Channel 3
Conversion
Repeat
Second FIFO Read
Repeat
tsample(2)
tsample(3)
tsample(4)
First FIFO Read
tconvert
tconvert
tSample(i) > = MIN(tSample)
† Command = Configure write for mode 10 or 11, FIFO threshold = 1/2, sweep seq = 0–1–2–3.
‡ Command = Read FIFO
Figure 12. TLV1504/TLV1508 Mode 10/11 DSP Serial Interface (Conversions triggered by FS)


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