|
|
PDF MAX5811 Data sheet ( Hoja de datos )
| Número de pieza | MAX5811 | |
| Descripción | 10-Bit / Low-Power / 2-Wire Interface / Serial / Voltage-Output DAC | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de MAX5811 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
|
No Preview Available !
19-2270; Rev 0; 1/02
10-Bit, Low-Power, 2-Wire Interface, Serial,
Voltage-Output DAC
General Description
The MAX5811 is a single, 10-bit voltage-output digital-to-
analog converter (DAC) with an I2C™-compatible 2-wire
interface that operates at clock rates up to 400kHz. The
device operates from a single 2.7V to 5.5V supply and
draws only 100µA at VDD = 3.6V. A low-power power-
down mode decreases current consumption to less than
1µA. The MAX5811 features three software-selectable
power-down output impedances: 100kΩ, 1kΩ, and high
impedance. Other features include an internal precision
Rail-to-Rail® output buffer and a power-on reset (POR)
circuit that powers up the DAC in the 100kΩ power-down
mode.
The MAX5811 features a double-buffered I2C-compatible
serial interface that allows multiple devices to share a sin-
gle bus. All logic inputs are CMOS-logic compatible and
buffered with Schmitt triggers, allowing direct interfacing
to optocoupled and transformer-isolated interfaces. The
MAX5811 minimizes digital noise feedthrough by discon-
necting the clock (SCL) signal from the rest of the device
when an address mismatch is detected.
The MAX5811 is specified over the extended temperature
range of -40°C to +85°C and is available in a space-sav-
ing 6-pin SOT23 package. Refer to the MAX5812 data
sheet for the 12-bit version.
Applications
Digital Gain and Offset Adjustments
Programmable Voltage and Current Sources
Programmable Attenuation
VCO/Varactor Diode Control
Low-Cost Instrumentation
Battery-Operated Equipment
Typical Operating Circuit
VDD
µC
SDA SCL
VDD
RP RP
RS
SCL
VDD
RS MAX5811
SDA OUT
RS
SCL
VDD
RS MAX5811
SDA OUT
Features
o Ultra-Low Supply Current
100µA at VDD = 3.6V
130µA at VDD = 5.5V
o 300nA Low-Power Power-Down Mode
o Single 2.7V to 5.5V Supply Voltage
o Fast 400kHz I2C-Compatible 2-Wire Serial
Interface
o Schmitt-Trigger Inputs for Direct Interfacing
to Optocouplers
o Rail-to-Rail Output Buffer Amplifier
o Three Software-Selectable Power-Down Output
Impedances
100kΩ, 1kΩ, and High Impedance
o Read-Back Mode for Bus and Data Checking
o Power-On Reset to Zero
o Miniature 6-Pin SOT23 Package
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
TOP
MARK
MAX5811LEUT-T
MAX5811MEUT-T
MAX5811NEUT-T
MAX5811PEUT-T
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
6 SOT23-6
6 SOT23-6
6 SOT23-6
6 SOT23-6
AAYS
AAYU
AAYW
AAYY
Functional Diagram appears at end of data sheet.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
I2C is a trademark of Philips Corp.
Pin Configuration
TOP VIEW
VDD 1
GND 2
SDA 3
MAX5811
6 OUT
5 ADD
4 SCL
SOT23
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1 page  
10-Bit Low Power 2-Wire Interface Serial,
Voltage-Output DAC
(VDD = +5V, RL = 5kΩ, TA = +25°C.)
Typical Operating Characteristics (continued)
GAIN ERROR vs. TEMPERATURE
-2.0
-1.6
-1.2
-0.8
-0.4
0
-40
120
NO LOAD
-15 10 35 60
TEMPERATURE (°C)
SUPPLY CURRENT
vs. INPUT CODE
85
100
80
60
40
20
NO LOAD
0
0 256
512
INPUT CODE
768
1024
POWER-DOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
500
400
300 TA = -40°C
TA = +25°C
200
100
0
2.7
TA = +85°C
ZOUT = HIGH IMPEDANCE
NO LOAD
3.4 4.1 4.8
SUPPLY VOLTAGE (V)
5.5
DAC OUTPUT VOLTAGE
vs. OUTPUT SOURCE CURRENT (NOTE 6)
6
5
4
3
2
1
CODE = 3FF hex
0
0 24 68
OUTPUT SOURCE CURRENT (mA)
SUPPLY CURRENT
vs. TEMPERATURE
100
10
95
90
85
NO LOAD
CODE = 3FF hex
80
-40
-15 10 35
TEMPERATURE (°C)
60
85
DAC OUTPUT VOLTAGE
vs. OUTPUT SINK CURRENT (NOTE 6)
2.5
2.0
1.5
CODE = 100 hex
1.0
0.5
0
0
100
24 68
OUTPUT SINK CURRENT (mA)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
10
90
80
70
60
50
2.5
CODE = 3FF hex
NO LOAD
3.5 4.5
SUPPLY VOLTAGE (V)
5.5
POWER-UP GLITCH
MAX5811 toc17
EXITING SHUTDOWN
MAX5811 toc18
5V
VDD
0 OUT
500mV/div
OUT 10mV/div
100µs/div
CLOAD = 200pF
2µs/div
CODE = 200 hex
_______________________________________________________________________________________ 5
5 Page 
10-Bit Low Power 2-Wire Interface Serial,
Voltage-Output DAC
MSB LSB MSB
S
A6
A5
A4
A3
A2
A1
A0
R/W
=0
ACK
C3 C2 X
X
X
LSB
X X X ACK
DATA BYTES GENERATED BY MASTER DEVICE
MSB LSB
Sr
A6
A5
A4
A3
A2
A1
A0
R/W
=1
ACK
MSB LSB
X X PD1 PD0 D9 D8 D7 D6
ACK
DATA BYTES GENERATED BY MAX5811
MSB
D5 D4 D3 D2 D1 D0
LSB
X X ACK
P
Figure 7. Read Word Data Sequence
ACK GENERATED BY
MASTER DEVICE
IN OUT
MAX6030/
MAX6050
GND
VDD
MAX5811
GND
OUT
Figure 8. Powering the MAX5811 from an External Reference
data flow reverses following the address acknowledge
by the MAX5811. The device transmits the first byte of
data, waits for the master to acknowledge, then trans-
mits the second byte. Figure 7 shows an example read
data sequence.
I2C Compatibility
The MAX5811 is compatible with existing I2C systems.
SCL and SDA are high-impedance inputs; SDA has an
open drain that pulls the data line low during the ninth
clock pulse. The Typical Operating Circuit shows a typ-
ical I2C application. The communication protocol sup-
ports the standard I2C 8-bit communications. The
general call address is ignored. The MAX5811 address
is compatible with the 7-bit I2C addressing protocol
only. No 10-bit address formats are supported.
Digital Feedthrough Suppression
When the MAX5811 detects an address mismatch, the
serial interface disconnects the SCL signal from the
core circuitry. This minimizes digital feedthrough
caused by the SCL signal on a static output. The serial
interface reconnects the SCL signal once a valid
START condition is detected.
Applications Information
Powering the Device from an
External Reference
The MAX5811 uses the VDD as the DAC voltage refer-
ence. Any power-supply noise is directly coupled to the
device output. The circuit in Figure 8 uses a precision
voltage reference to power the MAX5811, isolating the
device from any power-supply noise. Powering the
MAX5811 in such a manner greatly improves overall
performance, especially in noisy systems. The
MAX6030 (3V, 75ppm/°C) or the MAX6050 (5V,
75ppm/°C) precision voltage references are ideal
choices due to the low power requirements of the
MAX5811.
Digital Inputs and Interface Logic
The MAX5811 2-wire digital interface is I2C and SMBus
compatible. The two digital inputs (SCL and SDA) load
the digital input serially into the DAC. Schmitt-trigger
buffered inputs allow slow-transition interfaces such as
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet MAX5811.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| MAX5811 | 10-Bit / Low-Power / 2-Wire Interface / Serial / Voltage-Output DAC | Maxim Integrated |
| MAX5812 | 12-Bit Low-Power / 2-Wire / Serial Voltage-Output DAC | Maxim Integrated |
| MAX5813 | Ultra-Small Quad-Channel 8-/10-/12-Bit Buffered Output DACs |  Maxim Integrated Products |
| MAX5814 | Ultra-Small Quad-Channel 8-/10-/12-Bit Buffered Output DACs | Maxim Integrated Products |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |