AD7265BSUZ Analog Devices Inc, AD7265BSUZ Datasheet - Page 12

• Manufacturer Part Number: AD7265BSUZ
• Description: IC,Data Acquisition System,3-CHANNEL,12-BIT,TQFP,32PIN,PLASTIC
• Manufacturer: Analog Devices Inc

Specifications of AD7265BSUZ

• Design Resources: AD7265 in Differential and Single-Ended Configurations Using AD8022 (CN0048)
• Number Of Bits: 12
• Sampling Rate (per Second): 1M
• Data Interface: DSP, MICROWIRE™, QSPI™, Serial, SPI™
• Number Of Converters: 2
• Power Dissipation (max): 21mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 32-TQFP, 32-VQFP
• Number Of Elements: 2
• Resolution: 12Bit
• Architecture: SAR
• Sample Rate: 1MSPS
• Input Polarity: Unipolar
• Input Type: Voltage
• Rated Input Volt: 2.5/5V
• Differential Input: Yes
• Power Supply Requirement: Analog and Digital
• Single Supply Voltage (typ): 3/5V
• Single Supply Voltage (min): 2.7V
• 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: 21mW
• Differential Linearity Error: -0.99LSB/1.5LSB
• Integral Nonlinearity Error: ±1.5LSB
• Operating Temp Range: -40C to 125C
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Pin Count: 32
• Package Type: TQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: EVAL-AD7265CB - BOARD EVALUATION FOR AD7265
• Lead Free Status / Rohs Status: Compliant

AD7265
The AD7265 is tested using the CCIF standard where two input
frequencies near the top end of the input bandwidth are used.
In this case, the second-order terms are usually distanced in
frequency from the original sine waves, while the third-order
terms are usually at a frequency close to the input frequencies.
As a result, the second-order and third-order terms are
specified separately. The calculation of the intermodulation
distortion is as per the THD specification, where it is the ratio
of the rms sum of the individual distortion products to the rms
amplitude of the sum of the fundamentals expressed in dBs.
Common-Mode Rejection Ratio (CMRR)
CMRR is defined as the ratio of the power in the ADC output at
full-scale frequency, f, to the power of a 100 mV p-p sine wave
applied to the common-mode voltage of V
frequency f
where:
Pf is the power at frequency f in the ADC output.
f P
Power Supply Rejection Ratio (PSRR)
Variations in power supply affect the full-scale transition but
not the converter’s linearity. PSRR is the maximum change in
the full-scale transition point due to a change in power supply
voltage from the nominal value (see Figure 4).
S
is the power at frequency f
CMRR (dB) = 10 log(Pf/Pf
S
as
S
in the ADC output.
S
)
IN+
and V
IN−
of
Rev. A | Page 12 of 28
Thermal Hysteresis
Thermal hysteresis is defined as the absolute maximum change
of reference output voltage after the device is cycled through
temperature from either
or
It is expressed in ppm by
where:
V
V
T_HYS−.
REF
REF
T_HYS+ = +25°C to T
T_HYS− = +25°C to T
(25°C) is V
(T_HYS) is the maximum change of V
V
HYS
(
ppm
)
REF
=
at 25°C.
V
REF
(
25
MAX
MIN
°
V
) C
REF
to +25°C
to +25°C
−
(
V
25
REF
°
) C
(
T
_
HYS
REF
at T_HYS+ or
)
×
10
6