AD7495BRZ Analog Devices Inc, AD7495BRZ Datasheet - Page 10

• Manufacturer Part Number: AD7495BRZ
• Description: ADC Single SAR 1MSPS 12-Bit Serial 8-Pin SOIC N
• Manufacturer: Analog Devices Inc

Specifications of AD7495BRZ

• Package: 8SOIC N
• Resolution: 12 Bit
• Sampling Rate: 1000 KSPS
• Architecture: SAR
• Number Of Analog Inputs: 1
• Digital Interface Type: Serial (SPI, QSPI, Microwire)
• Input Type: Voltage
• Signal To Noise Ratio: 68 dB
• Polarity Of Input Voltage: Unipolar
• Number Of Bits: 12
• Sampling Rate (per Second): 1M
• Data Interface: DSP, MICROWIRE™, QSPI™, Serial, SPI™
• Number Of Converters: 1
• Power Dissipation (max): 10.5mW
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD7475/AD7495
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Table 5. Pin Descriptions
Pin No.
1 (AD7475)
1 (AD7495)
2
3
4
5
6
7
8
Mnemonic
REF IN
REF OUT
V
GND
SCLK
SDATA
V
CS
V
IN
DRIVE
DD
Function
Reference Input for the AD7475. An external reference must be applied to this input. The voltage range for
the external reference is 2.5 V ± 1% for specified performance. A cap of a least 0.1 μF should be placed on the
REF IN pin.
Reference Output for the AD7495. A minimum 100 nF capacitance is required from this pin to GND. The
internal reference can be taken from this pin, but buffering is required before it is applied elsewhere in a
system.
Analog Input. Single-ended analog input channel. The input range is 0 to REF IN.
Analog Ground. Ground reference point for all circuitry on the AD7475/AD7495. All analog input signals and
any external reference signal should be referred to this GND voltage.
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 AD7475/AD7495 conversion process.
Data Out, Logic Output. The conversion result from the AD7475/AD7495 is provided on this output as a serial
data stream. The bits are clocked out on the falling edge of the SCLK input. The data stream consists of four
leading zeros followed by the 12 bits of conversion data, which is provided MSB first.
Logic Power Supply Input. The voltage supplied at this pin determines the operating voltage for the serial
interface of the AD7475/AD7495.
Chip Select, Active Low Logic Input. This input provides the dual function of initiating conversions on the
AD7475/AD7495 and also frames the serial data transfer.
Power Supply Input. The V
Figure 5. AD7475 SOIC/MSOP Pin Configuration
Figure 6. AD7495 SOIC/MSOP Pin Configuration
REF OUT
REF IN
SCLK
GND
SCLK
DD
GND
V
V
IN
IN
range for the AD7475/AD7495 is from 2.7 V to 5.25 V.
1
2
3
4
Rev. B | Page 10 of 24
1
2
3
4
(Not to Scale)
(Not to Scale)
TOP VIEW
AD7475
TOP VIEW
AD7495
8
7
6
5
8
7
6
5
V
SDATA
CS
V
V
SDATA
DD
CS
V
DRIVE
DD
DRIVE