Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

MAX1247AEPE Datasheet(PDF) 10 Page - Maxim Integrated Products

Part # MAX1247AEPE
Description  2.7V, Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16
Download  24 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX1247AEPE Datasheet(HTML) 10 Page - Maxim Integrated Products

Back Button MAX1247AEPE Datasheet HTML 6Page - Maxim Integrated Products MAX1247AEPE Datasheet HTML 7Page - Maxim Integrated Products MAX1247AEPE Datasheet HTML 8Page - Maxim Integrated Products MAX1247AEPE Datasheet HTML 9Page - Maxim Integrated Products MAX1247AEPE Datasheet HTML 10Page - Maxim Integrated Products MAX1247AEPE Datasheet HTML 11Page - Maxim Integrated Products MAX1247AEPE Datasheet HTML 12Page - Maxim Integrated Products MAX1247AEPE Datasheet HTML 13Page - Maxim Integrated Products MAX1247AEPE Datasheet HTML 14Page - Maxim Integrated Products Next Button
Zoom Inzoom in Zoom Outzoom out
 10 / 24 page
background image
+2.7V, Low-Power, 4-Channel,
Serial 12-Bit ADCs in QSOP-16
10
______________________________________________________________________________________
BIT
NAME
DESCRIPTION
7(MSB)
START
The first logic “1” bit after CS goes low defines the beginning of the control byte.
6
SEL2
These three bits select which of the four channels are used for the conversion (Tables 2 and 3).
5
SEL1
4
SEL0
3
UNI/BIP
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.
2
SGL/DIF
1 = single ended, 0 = differential. Selects single-ended or differential conversions. In single-
ended mode, input signal voltages are referred to COM. In differential mode, the voltage
difference between two channels is measured (Tables 2 and 3).
1
PD1
Selects clock and power-down modes.
0(LSB)
PD0
PD1
PD0
Mode
0
0
Full power-down
0
1
Fast power-down
1
0
Internal clock mode
1
1
External clock mode
Table 1. Control-Byte Format
allowed between conversions. The acquisition time,
tACQ, is the maximum time the device takes to acquire
the signal, and is also the minimum time needed for the
signal to be acquired. It is calculated by the following
equation:
tACQ = 9 x (RS + RIN) x 16pF
where RIN = 9kΩ, RS = the source impedance of the
input signal, and tACQ is never less than 1.5µs. Note
that source impedances below 1k
Ω do not significantly
affect the ADC’s AC performance.
Higher source impedances can be used if a 0.01µF
capacitor is connected to the individual analog inputs.
Note that the input capacitor forms an RC filter with the
input source impedance, limiting the ADC’s signal
bandwidth.
Input Bandwidth
The ADC’s input tracking circuitry has a 2.25MHz
small-signal bandwidth, so it is possible to digitize
high-speed transient events and measure periodic sig-
nals with bandwidths exceeding the ADC’s sampling
rate by using undersampling techniques. To avoid
high-frequency signals being aliased into the frequency
band of interest, anti-alias filtering is recommended.
Analog Input Protection
Internal protection diodes, which clamp the analog input
to VDD and AGND, allow the channel input pins to swing
from AGND - 0.3V to VDD + 0.3V without damage.
However, for accurate conversions near full scale, the
inputs must not exceed VDD by more than 50mV or be
lower than AGND by 50mV.
If the analog input exceeds 50mV beyond the sup-
plies, do not forward bias the protection diodes of
off channels over 4mA.
How to Start a Conversion
Start a conversion by clocking a control byte into DIN.
With CS low, each rising edge on SCLK clocks a bit from
DIN into the MAX1246/MAX1247’s internal shift register.
After CS falls, the first arriving logic “1” bit defines the
control byte’s MSB. Until this first “start” bit arrives, any
number of logic “0” bits can be clocked into DIN with no
effect. Table 1 shows the control-byte format.
The MAX1246/MAX1247 are compatible with SPI™/
QSPI™ and Microwire™ devices. For SPI, select the
correct clock polarity and sampling edge in the SPI
control registers: set CPOL = 0 and CPHA = 0. Micro-
wire, SPI, and QSPI all transmit a byte and receive a
byte at the same time. Using the
Typical Operating
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
(MSB)
(LSB)
START
SEL2
SEL1
SEL0
UNI/BIP
SGL/DIF
PD1
PD0


Similar Part No. - MAX1247AEPE

ManufacturerPart #DatasheetDescription
logo
Maxim Integrated Produc...
MAX1247EVKIT-QSOP MAXIM-MAX1247EVKIT-QSOP Datasheet
116Kb / 8P
   Convenient On-Board Test Points
Rev 1; 6/97
MAX1247EVL11-QSOP MAXIM-MAX1247EVL11-QSOP Datasheet
116Kb / 8P
   Convenient On-Board Test Points
Rev 1; 6/97
More results

Similar Description - MAX1247AEPE

ManufacturerPart #DatasheetDescription
logo
Maxim Integrated Produc...
MAX1246 MAXIM-MAX1246_07 Datasheet
260Kb / 25P
   2.7V, Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16
Rev 2; 10/01
MAX1248 MAXIM-MAX1248 Datasheet
242Kb / 24P
   2.7V to 5.25V, Low-Power, 4-Channel, Serial 10-Bit ADCs in QSOP-16
Rev 2; 5/98
MAX1240 MAXIM-MAX1240 Datasheet
280Kb / 16P
   2.7V, Low-Power, 12-Bit Serial ADCs in 8-Pin SO
19-1155; Rev 2; 11/98
MAX1240 MAXIM-MAX1240_10 Datasheet
212Kb / 15P
   2.7V, Low-Power, 12-Bit Serial ADCs in 8-Pin SO
Rev 3; 3/10
MAX1240_101 MAXIM-MAX1240_101 Datasheet
219Kb / 15P
   2.7V, Low-Power, 12-Bit Serial ADCs in 8-Pin SO
Rev 4; 6/10
MAX144 MAXIM-MAX144_05 Datasheet
969Kb / 16P
   2.7V, Low-Power, 2-Channel, 108ksps, Serial 12-Bit ADCs in 8-Pin μMAX
Rev 2; 10/05
MAX1036 MAXIM-MAX1036 Datasheet
427Kb / 22P
   2.7V to 5.5V, Low-Power, 4-/12-Channel 2-Wire Serial 8-Bit ADCs
19-2442; Rev 1; 10/02
MAX144 MAXIM-MAX144 Datasheet
240Kb / 16P
   2.7V, Low-Power, 2-Channel, 108ksps, Serial 12-Bit ADCs in 8-Pin 關MAX
Rev 0; 11/98
MAX1111CE MAXIM-MAX1111CE Datasheet
287Kb / 20P
   2.7V, Low-Power, Multichannel, Serial 8-Bit ADCs
Rev 4; 4/11
MAX1110 MAXIM-MAX1110 Datasheet
284Kb / 20P
   2.7V, Low-Power, Multichannel, Serial 8-Bit ADCs
19-1194; Rev 2; 10/98
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.NET
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com