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PDF ADT7516 Data sheet ( Hoja de datos )
| Número de pieza | ADT7516 | |
| Descripción | SPI/I2C Compatible/ Temperature Sensor/ Four Channel ADC and Quad Voltage Output DAC | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ADT7516 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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PRELIMINARY TECHNICAL DATA
a
SPI/I2C Compatible, Temperature Sensor, Four
Channel ADC and Quad Voltage Output DAC
Preliminary Technical Data
ADT7516/7517/7518
FEATURES
ADT7516 - Four 12-Bit DACs
ADT7517 - Four 10-Bit DACs
ADT7518 - Four 8-Bit DACs
Buffered Voltage Output
Guaranteed Monotonic By Design Over All Codes
10-Bit Temperature to Digital Converter
10-Bit Four Channel ADC :
DC Input Bandwidth
Input Range: 0 V to 2.25 V
Temperature range: -40oC to +125oC
Temperature Sensor Accuracy of ±0.5oC
Supply Range : + 2.7 V to + 5.5 V
DAC Output Range: 0 - 2VREF
Power-Down Current 1µA
Internal 2.25 VRef Option
Double-Buffered Input Logic
Buffered Reference Input Option
Power-on Reset to Zero Volts
Simultaneous Update of Outputs (LDAC Function)
On-Chip Rail-to-Rail Output Buffer Amplifier
I2C, SPITM, QSPITM, MICROWIRETM and DSP-Compatible 4-
wire Serial Interface
16-Lead QSOP Package
FUNCTIONAL BLOCK DIAGRAM
APPLICATIONS
Portable Battery Powered Instruments
Personal Computers
Smart Battery Chargers
Telecommunications Systems
Electronic Test Equipment
Domestic Appliances
Process Control
GENERAL DESCRIPTION
The ADT7516/7517/7518 combines a 10-Bit Tempera-
ture-to-Digital Converter, a 10-Bit Four Channel ADC
and a quad 12/10/8-Bit DAC respectively, in a 16-Lead
QSOP package. This includes a bandgap temperature
sensor and a 10-bit ADC to monitor and digitize the tem-
perature reading to a resolution of 0.25 oC. The
ADT7516/17/18 operates from a single +2.7 V to + 5.5 V
supply. The input voltage range on the ADC channels has
a range of 0V to 2.25V and the input bandwidth is DC.
The reference for the ADC channels is derived internally.
The output voltage of the DAC ranges from 0 V to VDD ,
with an output voltage settling time of typ 7 msec. The
ADT7516/17/18 provides two serial interface options, a
four-wire serial interface which is compatible with SPITM,
QSPITM, MICROWIRETM and DSP interface standards;
and a two-wire SMBus/I2C interface. It features a standby
mode that is controlled via the serial interface.
cont. next page
D+/AIN1 7
D-/AIN2 8
LDAC/AIN3 9
AIN4 14
ON-CHIP
TEMPERATURE
SENSOR
ANALOG
MUX
VDD
SENSOR
INTERNAL TEMPERATURE
VALUE REGISTER
EXTERNAL TEMPERATURE
VALUE REGISTER
A-TO-D
CONVERTER
VDD
VALUE REGISTER
AIN1
VALUE REGISTER
AIN2
VALUE REGISTER
AIN3
VALUE REGISTER
AIN4
VALUE REGISTER
ADT7516/17/18
LIMIT
COMPARATOR
STATUS
REGISTERS
ADDRESS POINTER
REGISTER
THIGH LIMIT
REGISTERS
TLOW LIMIT
REGISTERS
VDD Limit
REGISTERS
AINHIGH LIMIT
REGISTERS
AINLOW LIMIT
REGISTERS
CONTROL CONFIG. 1
REGISTER
CONTROL CONFIG. 2
REGISTER
CONTROL CONFIG. 3
REGISTER
DAC CONFIGURATION
REGISTERS
LDAC CONFIGURATION
REGISTERS
INTERRUPT MASK
REGISTERS
SMBus INTERFACE
DAC A
REGISTERS
DAC B
REGISTERS
DAC C
REGISTERS
DAC D
REGISTERS
STRING
DAC A
2 VOUT-A
STRING
DAC B
STRING
DAC C
1 VOUT-B
16 VOUT-C
STRING
DAC D
15 VOUT-D
GAIN POWER
SELECT DOWN
LOGIC LOGIC
10 INT/INT
INTERNAL
REFERENCE
65
VDD GND
4 13
CS SCL
12 11
SDA
ADD
9
LDAC/AIN3
3
VREF-IN
REV. PrH 01/’03
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
I2C is a registered trademark of Philips Corporation
SPI and QSPI are trademarks of Motorola, INC.
MICROWIRE is a trademark of National Semiconductor Corporation.
The ADT7316/7317/7318 is protected by the following U.S. patent
numbers and by other intellectual property rights :
6,169,442
6,097,239
US Patent Pending
5,867,012
5,764174
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
Analog Devices, Inc., 2003
1 page  
PRELIMINARY TECHNICAL DATA
DAC AC CHARACTERISTICS1
ADT7516/7517/7518
(VDD = +2.7V to +5.5 V; RL=4k7Ω to GND; CL=200pF to GND;
4K7Ω to VDD; All specifications TMIN to TMAX unless otherwise noted.)
Parameter2
Min Typ @ 25°C
Output Voltage Settling Time
ADT7518
ADT7517
ADT7516
Slew Rate
Major-Code Change Glitch Energy
Digital Feedthrough
Digital Crosstalk
Analog Crosstalk
DAC-to-DAC Crosstalk
Multiplying Bandwidth
Total Harmonic Distortion
6
7
8
0.7
12
0.5
1
0.5
3
200
-70
NOTES
1Guaranteed by Design and Characterization, not production tested
2See Terminology
Specifications subject to change without notice.
Max
8
9
10
Units
µs
µs
µs
V/µs
nV-s
nV-s
nV-s
nV-s
nV-s
kHz
dB
Conditions/Comments
V REF=V D D= + 5 V
1/4 Scale to 3/4 Scale change (40 Hex to C0 Hex)
1/4 Scale to 3/4 Scale change (100 Hex to 300 Hex)
1/4 Scale to 3/4 Scale change (400 Hex to C00 Hex)
1 LSB change around major carry.
VREF=2V±0.1Vpp
VREF=2.5V±0.1Vpp. Frequency=10kHz.
SCL
t1
SDA
DATA IN
SDA
DATA OUT
t4
t2
t3
t5
t6
Figure 1. Diagram for I2C Bus Timing
CS
t1 t2
SCLK
DIN
t3 t5 t6
D7 D6 D5 D4 D3 D2 D1 D0 X X
XXX
XX
t4
DOUT
X X X X X X X X D7 D6 D5 D4 D3 D2 D1
Figure 2. Diagram for SPI Bus Timing
t7
t8
X
D0
200 A
IOL
TO
OUTPUT
PIN
CL
50pF
2 00 A
IO L
1.6V
Figure 3. Load Circuit for Access Time and Bus Relinquish
Time
REV. PrH
–5–
To DAC
Ou tp ut
VDD
4Κ7Ω
4 Κ7 Ω
200 pF
Figure 4. Load Circuit for DAC Outputs
5 Page 
PRELIMINARY TECHNICAL DATA
ADT7516/7517/7518
00
0
00
0
0
0000000
TITLE
TPC 10. DAC Offset Error and Gain
Error vs VDD
0
0000000
TITLE
TPC 11. DAC VOUT Source and Sink Cur-
rent Capability
0
0000000
TITLE
TPC 12. Supply Current vs. DAC Code
00
0
00
0
00
0000000
0000000
TITLE
TITLE
0
0000000
TITLE
TPC 13. Supply Current vs. Supply Volt- TPC 14. Power-Down Current vs. Supply TPC 15. DAC Half-Scale Settling (1/4 to
age
Voltage
3/4 Scale Code Change)
0 00
0 00
0
0000000
0
0000000
TITLE
TITLE
TPC 16. Exiting Power-Down to MidscaleTPC 17. ADT7516 DAC Major-Code Tran-
sition Glitch Energy
0
0000000
TITLE
TPC 18. DAC Multiplying Bandwidth
(Small-Signal Frequency Response)
REV. PrH
–11–
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet ADT7516.PDF ] | |
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