TLV1571_00 Datasheet, PDF (1/33 Pages) Texas Instruments – 2.7 V TO 5.5 V, 1-/8-CHANNEL, 10-BIT, PARALLEL ANALOG-TO-DIGITAL CONVERTERS

TLV1571, TLV1578
2.7 V TO 5.5 V, 1-/8-CHANNEL, 10-BIT,
PARALLEL ANALOG-TO-DIGITAL CONVERTERS
SLAS170D –MARCH 1999 – REVISED JULY 2000
features
D Fast Throughput Rate: 1.25 MSPS at 5 V,
625 KSPS at 3 V
D Wide Analog Input: 0 V to AV_DD
D Differential Nonlinearity Error: < ± 1 LSB
D Integral Nonlinearity Error: < ± 1 LSB
D 8-to-1 Analog MUX – TLV1578
D Internal OSC
D Single 2.7-V to 5.5-V Supply Operation
D Low Power: 12 mW at 3 V and 35 mW at 5 V
D Auto Power Down of 1 mA Max
D Software Power Down: 10 µA Max
D Hardware Configurable
D DSP and Microcontroller Compatible
Parallel Interface
D Binary/Twos Complement Output
D Hardware Controlled Extended Sampling
D Channel Sweep Mode Operation and
Channel Select
D Hardware or Software Start of Conversion
applications
D Mass Storage and HDD
D Automotive
D Digital Servos
D Process Control
D General-Purpose DSP
D Image Sensor Processing
CH0
CH1
CH2
CH3
CS
WR
RD
CLK
DGND
DVDD
INT/EOC
D0
D1
D2
D3
D4
CS
WR
RD
CLK
DGND
DVDD
INT/EOC
D0
D1
D2
D3
D4
TLV1578
DA PACKAGE
(TOP VIEW)
1
32
2
31
3
30
4
29
5
28
6
27
7
26
8
25
9
24
10
23
11
22
12
21
13
20
14
19
15
18
16
17
TLV1571
DW OR PW PACKAGE
(TOP VIEW)
CH7
CH6
CH5
CH4
MO
AIN
AVDD
AGND
REFM
REFP
CSTART
D9/A1
D8/A0
D7
D6
D5
1
24
NC
2
23
AIN
3
22
AVDD
4
21
AGND
5
20
REFM
6
19
REFP
7
18
CSTART
8
17
D9/A1
9
16
D8/A0
10
15
D7
11
14
D6
12
13
D5
NC – No internal connection
description
The TLV1571/1578 is a 10-bit data acquisition system that combines an 8-channel input multiplexer (MUX), a
high-speed 10-bit ADC, and a parallel interface. The device contains two on-chip control registers allowing
control of channel selection, software conversion start, and power down via the bidirectional parallel port. The
control registers can be set to a default mode by applying a dummy RD signal when WR is tied low. This allows
the TLV1571/1578 to be configured by hardware. The MUX is independently accessible. This allows the user to
insert a signal conditioning circuit such as an antialiasing filter or an amplifier, if required, between the MUX and
the ADC. Therefore, one signal conditioning circuit can be used for all eight channels. The TLV1571 is a single
channel analog input device with all the same functions as the TLV1578.
The TLV1571/TLV1578 operates from a single 2.7-V to 5.5-V power supply. It accepts an analog input range
from 0 V to AV_DD and digitizes the input at a maximum 1.25 MSPS throughput rate at 5 V. The power dissipations
are only 12 mW with a 3-V supply or 35 mW with a 5-V supply. The device features an auto power-down mode
that automatically powers down to 1 mA 50 ns after conversion is performed. In software power-down mode, the
ADC is further powered down to only 10 µA.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright © 2000, Texas Instruments Incorporated
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
1