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PDF MAX1035 Data sheet ( Hoja de datos )

Número de pieza MAX1035
Descripción (MAX1034 / MAX1035) Serial 14-Bit ADCs
Fabricantes Maxim Integrated Products 
Logotipo Maxim Integrated Products Logotipo



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No Preview Available ! MAX1035 Hoja de datos, Descripción, Manual

19-3574; Rev 0; 5/05
www.DataSheet4U.com
8-/4-Channel, ±VREF Multirange Inputs,
Serial 14-Bit ADCs
General Description
The MAX1034/MAX1035 multirange, low-power, 14-bit,
successive-approximation, analog-to-digital converters
(ADCs) operate from a single +5V supply and achieve
throughput rates up to 115ksps. A separate digital sup-
ply allows digital interfacing with 2.7V to 5.25V systems
using the SPI™-/QSPI™-/MICROWIRE™-compatible
serial interface. Partial power-down mode reduces the
supply current to 1.3mA (typ). Full power-down mode
reduces the power-supply current to 1µA (typ).
The MAX1034 provides eight (single-ended) or four (true
differential) analog input channels. The MAX1035 pro-
vides four (single-ended) or two (true differential) analog
input channels. Each analog input channel is indepen-
dently software programmable for seven single-ended
input ranges (0 to +VREF/2, -VREF/2 to 0, 0 to +VREF,
-VREF to 0, ±VREF/4, ±VREF/2, and ±VREF), and three
differential input ranges (±VREF/2, ±VREF, ±2 x VREF).
An on-chip +4.096V reference offers a small convenient
ADC solution. The MAX1034/MAX1035 also accept an
external reference voltage between 3.800V and 4.136V.
The MAX1034 is available in a 24-pin TSSOP package
and the MAX1035 is available in a 20-pin TSSOP pack-
age. Each device is specified for operation from -40°C
to +85°C.
Applications
Industrial Control Systems
Data-Acquisition Systems
Avionics
Robotics
SPI and QSPI are a trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
Features
Software-Programmable Input Range for Each
Channel
Single-Ended Input Ranges
0 to +VREF/2, -VREF/2 to 0, 0 to +VREF, -VREF to
0, ±VREF/4, ±VREF/2, and ±VREF
Differential Input Ranges
±VREF/2, ±VREF, and ±2 x VREF
Eight Single-Ended or Four Differential Analog
Inputs (MAX1034)
Four Single-Ended or Two Differential Analog
Inputs (MAX1035)
±6V Overvoltage Tolerant Inputs
Internal or External Reference
115ksps Maximum Sample Rate
Single +5V Power Supply
20-/24-Pin TSSOP Package
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
CHANNELS
MAX1034EUG* -40°C to +85°C 24 TSSOP
MAX1035EUP -40°C to +85°C 20 TSSOP
8
4
*Future product—contact factory for availability.
Pin Configurations
TOP VIEW
AVDD1 1
CH0 2
CH1 3
CH2 4
CH3 5
CH4 6
CH5 7
CH6 8
CH7 9
CS 10
DIN 11
SSTRB 12
MAX1034
24 AGND1
23 AGND2
22 AVDD2
21 AGND3
20 REF
19 REFCAP
18 DVDD
17 DVDDO
16 DGND
15 DGNDO
14 DOUT
13 SCLK
TSSOP
Pin Configurations continued at end of data sheet.
________________________________________________________________ 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




MAX1035 pdf
8-/4-Channel, ±VREF Multirange Inputs,
Serial 14-Bit ADCs
ELECTRICAL CHARACTERISTICS (continued)
(AVDD1 = AVDD2 = DVDD = DVDDO = 5V, AGND1 = DGND = DGNDO = AGND2 = AGND3 = 0, fCLK = 3.5MHz (50% duty cycle), external
clock mode, VREF = 4.096V (external reference operation), REFCAP = AVDD1, maximum single-ended bipolar input range (±VREF), CDOUT
= 50pF, CSSTRB = 50pF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
Preamplifier Supply Voltage
Digital I/O Supply Voltage
SYMBOL
AVDD2
DVDDO
CONDITIONS
MIN TYP MAX UNITS
4.75 5.25 V
2.70 5.25 V
AVDD1 Supply Current
IAVDD1
External clock mode,
external acquisition
mode, or internal
clock mode
Internal reference
External reference
3 3.5
mA
2.5 3
DVDD Supply Current
IDVDD
External clock mode, external acquisition
mode, or internal clock mode
AVDD2 Supply Current
IAVDD2
External clock mode, external acquisition
mode, or internal clock mode
DVDDO Supply Current
IDVDDO
External clock mode, external acquisition
mode, or internal clock mode
Total Supply Current
Partial power-down mode
Full power-down mode
Power-Supply Rejection Ratio
PSRR All analog input ranges
TIMING CHARACTERISTICS (Figures 15 and 16)
External clock mode
SCLK Period
tCP External acquisition mode
Internal clock mode
External clock mode
SCLK High Pulse Width (Note 5)
tCH External acquisition mode
Internal clock mode
External clock mode
SCLK Low Pulse Width (Note 5)
tCL External acquisition mode
Internal clock mode
DIN to SCLK Setup
tDS
DIN to SCLK Hold
tDH
SCLK Fall to DOUT Valid
CS Fall to DOUT Enable
CS Rise to DOUT Disable
CS Fall to SCLK Rise Setup
CS High Minimum Pulse Width
SCLK Fall to CS Rise Hold
SSTRB Rise to CS Fall Setup
tDO
tDV
tTR
tCSS
tCSPW
tCSH
DOUT Rise/Fall Time
CL = 50pF
SSTRB Rise/Fall Time
CL = 50pF
0.9 2
17.5 25
0.2
1.3
1
±0.125
1
272
228
100
109
92
40
109
92
40
40
0
40
40
0
40
10
10
62
62
83
40
40
40
mA
mA
mA
mA
µA
LSB
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
_______________________________________________________________________________________ 5

5 Page





MAX1035 arduino
8-/4-Channel, ±VREF Multirange Inputs,
Serial 14-Bit ADCs
Typical Operating Characteristics (continued)
(AVDD1 = AVDD2 = DVDD = DVDDO = 5V, AGND1 = DGND = DGNDO = AGND2 = AGND3 = 0, fCLK = 3.5MHz (50% duty cycle),
external clock mode, VREF = 4.096V (external reference operation), REFCAP = AVDD1, maximum single-ended bipolar input range
(±VREF), CDOUT = 50pF, CSSTRB = 50pF, unless otherwise noted.)
SMALL-SIGNAL BANDWIDTH
0
-5
-10
-15
-20
-25
-30
1
10 100 1000
FREQUENCY (kHz)
10,000
0
-10
-20
-30
-40
-50
-60
1
FULL-POWER BANDWIDTH
10 100 1000
FREQUENCY (kHz)
10,000
REFERENCE VOLTAGE vs. TIME
MAX1034/35 toc27
4ms/div
1V/div
0V
40,000
35,000
NOISE HISTOGRAM
(CODE EDGE)
65,534 SAMPLES
30,000
25,000
20,000
15,000
10,000
5000
0
8190 8191 8192 8193 8194 8195
CODE
70,000
60,000
NOISE HISTOGRAM
(CODE CENTER)
65,534 SAMPLES
50,000
40,000
30,000
20,000
10,000
0
8190 8191 8192 8193 8194
CODE
______________________________________________________________________________________ 11

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