MAX1035 Maxim Integrated Products, MAX1035 Datasheet - Page 12

• Manufacturer Part Number: MAX1035
• Description: (MAX1034 / MAX1035) Serial 14-Bit ADCs
• Manufacturer: Maxim Integrated Products

8-/4-Channel, ±V
Serial 14-Bit ADCs
12
MAX1034 MAX1035
10
11
12
13
14
15
16
17
18
19
20
______________________________________________________________________________________
1
2
3
4
5
6
7
8
9
PIN
—
—
—
—
10
11
12
13
14
15
16
17
2
3
4
5
6
7
8
9
DGNDO
REFCAP
DV
SSTRB
NAME
AV
DGND
DOUT
SCLK
DV
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
DIN
REF
CS
DDO
DD1
DD
Analog Supply Voltage 1. Connect AV
Bypass AV
Analog Input Channel 0
Analog Input Channel 1
Analog Input Channel 2
Analog Input Channel 3
Analog Input Channel 4
Analog Input Channel 5
Analog Input Channel 6
Analog Input Channel 7
Active-Low Chip-Select Input. When CS is low, data is clocked into the device from DIN on
the rising edge of SCLK. With CS low, data is clocked out of DOUT on the falling edge of
SCLK. When CS is high, activity on SCLK and DIN is ignored and DOUT is high impedance.
Serial Data Input. When CS is low, data is clocked in on the rising edge of SCLK. When CS is
high, transitions on DIN are ignored.
Serial-Strobe Output. When using the internal clock, SSTRB rising edge transitions indicate
that data is ready to be read from the device. When operating in external clock mode, SSTRB
is always low. SSTRB does not tri-state, regardless of the state of CS, and therefore requires
a dedicated I/O line.
Serial Clock Input. When CS is low, transitions on SCLK clock data into DIN and out of DOUT.
When CS is high, transitions on SCLK are ignored.
Serial Data Output. When CS is low, data is clocked out of DOUT with each falling SCLK
transition. When CS is high, DOUT is high impedance.
D i gi tal I/O Gr ound . D GND , DGN D O, AGN D 3, AGND 2, and AGN D1 m ust be connected tog ether.
Digital Ground. DGND, DGNDO, AGND3, AGND2, and AGND1 must be connected together.
Digital I/O Supply Voltage Input. Connect DV
Bypass DV
Digital-Supply Voltage Input. Connect DV
Bypass DV
Bandgap-Voltage Bypass Node. For external reference operation, connect REFCAP to AV
For internal reference operation, bypass REFCAP with a 0.01µF capacitor to AGND1
(V
Reference-Buffer Output/ADC Reference Input. For external reference operation, apply an
external reference voltage from 3.800V to 4.136V to REF. For internal reference operation,
bypassing REF with a 1µF capacitor to AGND1 sets V
REFCAP
REF
≈ 4.096V).
DD1
DDO
DD
to DGND with a 0.1µF capacitor.
to AGND1 with a 0.1µF capacitor.
to DGNDO with a 0.1µF capacitor.
Multirange Inputs,
DD1
DD
FUNCTION
to a +4.75V to +5.25V power-supply voltage.
to a +4.75V to +5.25V power-supply voltage.
DDO
to a +2.7V to +5.25V power-supply voltage.
REF
= 4.096V ±1%.
Pin Description
DD
.