|
|
PDF MAX1204 Data sheet ( Hoja de datos )
| Número de pieza | MAX1204 | |
| Descripción | 5v / 8-cHANNEL / sERIAL / 10-bIT adc WITH 3v dIGITAL iNTERFACE | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de MAX1204 (archivo pdf) en la parte inferior de esta página. Total 24 Páginas | ||
|
No Preview Available !
19-1179; Rev 0; 1/97
5V, 8-Channel, Serial, 10-Bit ADC
with 3V Digital Interface
_______________General Description
The MAX1204 is a 10-bit data-acquisition system
specifically designed for use in applications with mixed
+5V (analog) and +3V (digital) supply voltages. It oper-
ates with a single +5V analog supply or dual ±5V ana-
log supplies, and combines an 8-channel multiplexer,
internal track/hold, and serial interface with high con-
version speed and low power consumption.
A 4-wire serial interface connects directly to
SPI™/Microwire™ devices without external logic, and a
serial strobe output allows direct connection to
TMS320-family digital signal processors. The MAX1204
uses either the internal clock or an external serial-
interface clock to perform successive-approximation
analog-to-digital conversions. The serial interface oper-
ates at up to 2MHz.
The MAX1204 features an internal 4.096V reference and
a reference-buffer amplifier that simplifies gain trim. It
also has a VL pin that supplies power to the digital out-
puts. Output logic levels (3V, 3.3V, or 5V) are determined
by the value of the voltage applied to this pin.
A hard-wired SHDN pin and two software-selectable
power-down modes are provided. Accessing the serial
interface automatically powers up the device. A quick
turn-on time allows the MAX1204 to be shut down
between conversions, enabling the user to optimize
supply currents. By customizing power-down between
conversions, supply current can drop below 10µA at
reduced sampling rates.
The MAX1204 is available in 20-pin SSOP and DIP
packages, and is specified for the commercial, extend-
ed, and military temperature ranges.
____________________________Features
o 8-Channel Single-Ended or 4-Channel
Differential Inputs
o Operates from +5V Single or ±5V Dual Supplies
o User-Adjustable Output Logic Levels
(2.7V to 5.25V)
o Low Power: 1.5mA (operating mode)
2µA (power-down mode)
o Internal Track/Hold, 133kHz Sampling Rate
o Internal 4.096V Reference
o SPI/Microwire/TMS320-Compatible
4-Wire Serial Interface
o Software-Configurable Unipolar/Bipolar Inputs
o 20-Pin DIP/SSOP
o Pin-Compatible 12-Bit Upgrade: MAX1202
______________Ordering Information
PART
TEMP. RANGE PIN-PACKAGE
INL
(LSB)
MAX1204ACPP 0°C to +70°C 20 Plastic DIP ±1/2
MAX1204BCPP 0°C to +70°C 20 Plastic DIP ±1
MAX1204ACAP 0°C to +70°C 20 SSOP
MAX1204BCAP 0°C to +70°C 20 SSOP
±1/2
±1
Ordering Information continued at end of data sheet.
__________________Pin Configuration
________________________Applications
5V/3V Mixed-Supply Systems
Data Acquisition
Process Control
Battery-Powered Instruments
Medical Instruments
Typical Operating Circuit appears on last page.
SPI is a registered trademark of Motorola, Inc.
Microwire is a registered trademark of National Semiconductor Corp.
TOP VIEW
CH0 1
CH1 2
CH2 3
CH3 4
CH4 5
CH5 6
CH6 7
CH7 8
VSS 9
SHDN 10
MAX1204
20 VDD
19 SCLK
18 CS
17 DIN
16 SSTRB
15 DOUT
14 VL
13 GND
12 REFADJ
11 REF
DIP/SSOP
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
1 page  
5V, 8-Channel, Serial, 10-Bit ADC
with 3V Digital Interface
ELECTRICAL CHARACTERISTICS
(VDD = +5V ±5%, VL = 2.7V to 5.25V; VSS = 0V or -5V ±5%; fSCLK = 2.0MHz, external clock (50% duty cycle); 15 clocks/conversion
cycle (133ksps); 4.7µF capacitor at REF; TA = TMIN to TMAX; unless otherwise noted.)
PARAMETER
SYMBOL
DIGITAL INPUTS: DIN, SCLK, CS, SHDN
DIN, SCLK, CS Input High Voltage VIH
DIN, SCLK, CS Input Low Voltage
VIL
DIN, SCLK, CS Input Hysteresis
VHYST
DIN, SCLK, CS Input Leakage
IIN
DIN, SCLK, CS Input Capacitance CIN
SHDN Input High Voltage
VSH
SHDN Input Mid-Voltage
VSM
SHDN Voltage, Floating
VFLT
SHDN Input Low Voltage
VSL
SHDN Input Current, High
ISH
SHDN Input Current, Low
ISL
SHDN Maximum Allowed
Leakage, Mid-Input
CONDITIONS
VIN = 0V or VDD
(Note 6)
SHDN = open
SHDN = VDD
SHDN = 0V
SHDN = open
DIGITAL OUTPUTS: DOUT, SSTRB (VL = 2.7V to 3.6V)
Output Voltage Low
VOL
ISINK = 3mA
ISINK = 6mA
Output Voltage High
VOH ISOURCE = 1mA
Three-State Leakage Current
IL CS = VL
Three-State Output Capacitance
COUT CS = VL (Note 6)
DIGITAL OUTPUTS: DOUT, SSTRB (VL = 4.75V to 5.25V)
Output Voltage Low
Output Voltage High
Three-State Leakage Current
Three-State Output Capacitance
VOL
VOH
IL
COUT
ISINK = 5mA
ISINK = 8mA
ISOURCE = 1mA
CS = 5V
CS = 5V (Note 6)
MIN TYP MAX UNITS
2.0
0.8
0.15
±1
15
VDD - 0.5
1.5 VDD - 1.5
2.75
0.5
4.0
-4.0
-100
100
V
V
V
µA
pF
V
V
V
V
µA
µA
nA
0.4
0.3
V
VL - 0.5
V
±10 µA
15 pF
0.4
0.3
V
4V
±10 µA
15 pF
_______________________________________________________________________________________ 5
5 Page 
5V, 8-Channel, Serial, 10-Bit ADC
with 3V Digital Interface
Table 2. Control-Byte Format
Bit 7
(MSB)
START
Bit 6
SEL 2
Bit 5
SEL 1
Bit 4
SEL 0
Bit 3
UNI/BIP
Bit 2
SGL/DIF
Bit 1
PD1
Bit 0
(LSB)
PD0
Bit
7 (MSB)
6
5
4
3
2
1
0 (LSB)
Name
START
SEL2
SEL1
SEL0
UNI/BIP
SGL/DIF
PD1
PD0
Description
The first logic 1 bit after CS goes low defines the beginning of the control byte.
These three bits select which of the eight channels is used for the conversion
(Tables 3 and 4).
1 = unipolar, 0 = bipolar. Selects unipolar or bipolar conversion mode. In unipolar mode, an
analog input signal from 0V to VREF can be converted; in bipolar mode, the signal can range
from -VREF / 2 to +VREF / 2.
1 = single ended, 0 = differential. Selects single-ended or differential conversions. In single-
ended mode, input signal voltages are referred to GND. In differential mode, the voltage dif-
ference between two channels is measured. (Tables 3 and 4.)
Selects clock and power-down modes.
PD1 PD0
Mode
00
Full power-down (IDD = 2µA, internal reference)
01
Fast power-down (IDD = 30µA, internal reference)
10
Internal clock mode
11
External clock mode
Table 3. Channel Selection in Single-Ended Mode (SGL/DIF = 1)
SEL2 SEL1 SEL0 CH0
CH1
CH2
CH3
CH4
CH5
CH6
000
+
100
+
001
+
101
+
010
+
110
+
011
+
111
Table 4. Channel Selection in Differential Mode (SGL/DIF = 0)
SEL2
SEL1
SEL0
CH0
CH1
CH2
CH3
CH4
CH5
0 0 0 +–
001
+–
010
+–
011
1 0 0 –+
101
–+
110
–+
111
CH7
+
CH6
+
–
GND
–
–
–
–
–
–
–
–
CH7
–
+
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet MAX1204.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| MAX120 | 500ksps / 12-Bit ADCs with Track/Hold And Refrence | Maxim Integrated |
| MAX1200 | +5v sINGLE-sUPPLY / 1mSPS / 16-bIT sELF-cALIBRATING adc | Maxim Integrated |
| MAX12000 | 1575MHz GPS Front-End Amplifier |  Maxim Integrated Products |
| MAX12005 | 8 x 4 Satellite IF Switch Matrix | 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 |