AD7911ARMZ Analog Devices Inc, AD7911ARMZ Datasheet - Page 10

IC ADC 10BIT DUAL 2CH 8-MSOP

AD7911ARMZ

Manufacturer Part Number
AD7911ARMZ
Description
IC ADC 10BIT DUAL 2CH 8-MSOP
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD7911ARMZ

Data Interface
DSP, MICROWIRE™, QSPI™, Serial, SPI™
Operating Temperature
-40°C ~ 85°C
Number Of Bits
10
Sampling Rate (per Second)
250k
Number Of Converters
1
Power Dissipation (max)
20mW
Voltage Supply Source
Single Supply
Mounting Type
Surface Mount
Package / Case
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Resolution (bits)
10bit
Input Channel Type
Single Ended
Supply Voltage Range - Analogue
2.35V To 5.25V
Supply Current
4mA
No. Of Pins
8
Sampling Rate
250kSPS
Rohs Compliant
Yes
Number Of Elements
1
Resolution
10Bit
Architecture
SAR
Sample Rate
250KSPS
Input Polarity
Unipolar
Input Type
Voltage
Rated Input Volt
5.25V
Differential Input
No
Power Supply Requirement
Single
Single Supply Voltage (typ)
3/5V
Single Supply Voltage (min)
2.35V
Single Supply Voltage (max)
5.25V
Dual Supply Voltage (typ)
Not RequiredV
Dual Supply Voltage (min)
Not RequiredV
Dual Supply Voltage (max)
Not RequiredV
Power Dissipation
20mW
Differential Linearity Error
±0.5LSB
Integral Nonlinearity Error
±0.5LSB
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
8
Package Type
MSOP
Input Signal Type
Single-Ended
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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AD7911/AD7921
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
Table 5. Pin Function Descriptions
TSOT
Pin No.
1
2
3
4
5
6
7, 8
MSOP
Pin No.
4
3
2
1
8
7
6, 5
Figure 8. 8-Lead TSOT Pin Configuration
DOUT
SCLK
DIN
CS
Mnemonic
DIN
SCLK
CS
DOUT
V
GND
V
1
2
3
4
DD
IN0
8-LEAD TSOT
, V
(Not to Scale)
AD7911/
AD7921
TOP VIEW
IN1
Function
Data In. Logic input. The channel to be converted is provided on this input and is clocked into an
internal register on the falling edge of SCLK.
Serial Clock. Logic input. SCLK provides the serial clock for accessing data from the part. This clock
input is also used as the clock source for the AD7911/AD7921’s conversion process.
Chip Select. Active low logic input. This input provides the dual function of initiating conversions on
the AD7911/AD7921 and framing the serial data transfer.
Data Out. Logic output. The conversion result from the AD7911/AD7921 is provided on this output as a
serial data stream. The bits are clocked out on the falling edge of the SCLK signal.
For the AD7921, the data stream consists of two leading zeros; the channel identifier bit, which
identifies the channel that the conversion result corresponds to; followed by an invalid bit that
matches up to the channel identifier bit; followed by the 12 bits of conversion data, with MSB first.
For the AD7911, the data stream consists of two leading zeros; the channel identifier bit, which
identifies the channel that the conversion result corresponds to; followed by an invalid bit that
matches up to the channel identifier bit; followed by the 10 bits of conversion data, with MSB first and
two trailing zeros.
Power Supply Input. The V
Analog Ground. Ground reference point for all circuitry on the AD7911/AD7921. All analog input
signals should be referred to this GND voltage.
Analog Inputs. These two single-ended analog input channels are multiplexed into the on-chip track-
and-hold amplifier. The analog input channel to be converted is selected by writing to the third MSB
on the DIN pin. The input range is 0 to V
8
7
6
5
V
V
GND
V
IN1
IN0
DD
Rev. 0 | Page 10 of 28
DD
range for the AD7911/AD7921 is from 2.35 V to 5.25 V.
DD
.
Figure 9. 8-Lead MSOP Pin Configuration
DOUT
SCLK
DIN
CS
1
2
3
4
8-LEAD MSOP
(Not to Scale)
AD7911/
AD7921
TOP VIEW
8
7
6
5
V
GND
V
V
DD
IN0
IN1

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