參數(shù)資料
型號: TLV2548QDWRG4
廠商: TEXAS INSTRUMENTS INC
元件分類: ADC
英文描述: 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
封裝: PLASTIC, SOIC-20
文件頁數(shù): 12/43頁
文件大?。?/td> 989K
代理商: TLV2548QDWRG4
TLV2544Q, TLV2548Q, TLV2548M
3V TO 5.5V, 12BIT, 200KSPS, 4/8CHANNEL, LOW POWER
SERIAL ANALOGTODIGITAL CONVERTERS WITH AUTOPOWERDOWN
SGLS119F FEBRUARY 2002 REVISED OCTOBER 2009
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description (continued)
In addition to a high-speed A/D converter and versatile control capability, these devices have an on-chip analog
multiplexer that can select any analog inputs or one of three internal self-test voltages. The sample-and-hold
function is automatically started after the fourth SCLK edge (normal sampling) or can be controlled by a special
pin, CSTART, to extend the sampling period (extended sampling). The normal sampling period can also be
programmed as short (12 SCLKs) or as long (24 SCLKs) to accommodate faster SCLK operation popular
among high-performance signal processors. The TLV2548 and TLV2544 are designed to operate with very low
power consumption. The power-saving feature is further enhanced with software/hardware/autopower-down
modes and programmable conversion speeds. The conversion clock (OSC) and reference are built-in. The
converter can use the external SCLK as the source of the conversion clock to achieve higher (up to 2.8
s when
a 20 MHz SCLK is used) conversion speed. Two different internal reference voltages are available. An optional
external reference can also be used to achieve maximum flexibility.
The TLV2544Q and the TLV2548Q are characterized for operation from 40
°C to 125°C. The TLV2548M is
characterized for operation from 55
°C to 125°C.
functional block diagram
Command
Decode
SDI
CS
FS
EOC/(INT)
Low Power
12-BIT
SAR ADC
Control Logic
CSTART
PWDN
VCC
GND
REFP
Analog
MUX
4/2 V
Reference
S/H
OSC
Conversion
Clock
M
U
X
FIFO
12 Bit
× 8
CFR
SCLK
SDO
2548
A0
A1
A2
A3
A4
A5
A6
A7
REFM
2544
A0
X
A1
X
A2
X
A3
X
CMR (4 MSBs)
AVAILABLE OPTIONS
TA
20-SOIC
(DW)
16-SOIC
(D)
20-LCCC
(FK)
40
°C to 125°C TLV2548QDW
TLV2544QD
55
°C to 125°C
TLV2548MFK
相關(guān)PDF資料
PDF描述
TLV2544QDG4 4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16
TLV2544QD 4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16
TLV2548QDWG4 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
5962-9957001QRA 4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, CDIP20
TLV2548MJ 4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, CDIP20
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