AD7923BRUZ Analog Devices Inc, AD7923BRUZ Datasheet - Page 11

• Manufacturer Part Number: AD7923BRUZ
• Description: IC ADC 12BIT 4CH W/SEQ 16TSSOP
• Manufacturer: Analog Devices Inc

Specifications of AD7923BRUZ

• Data Interface: DSP, MICROWIRE™, QSPI™, Serial, SPI™
• Number Of Bits: 12
• Sampling Rate (per Second): 200k
• Number Of Converters: 1
• Power Dissipation (max): 7.5mW
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP (0.173", 4.40mm Width)
• Resolution (bits): 12bit
• Sampling Rate: 200kSPS
• Input Channel Type: Single Ended
• Supply Voltage Range - Analog: 2.7V To 5.25V
• Supply Current: 2.7mA
• Number Of Elements: 1
• Resolution: 12Bit
• Architecture: SAR
• Sample Rate: 200KSPS
• Input Polarity: Unipolar
• Input Type: Voltage
• Rated Input Volt: 2.5/5V
• Differential Input: No
• 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: 7.5mW
• Differential Linearity Error: ±1.5LSB
• Integral Nonlinearity Error: ±1LSB
• Operating Temp Range: -40C to 125C
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Pin Count: 16
• Package Type: TSSOP
• Input Signal Type: Single-Ended
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: EVAL-AD7923CBZ - BOARD EVAL FOR AD7923
• Lead Free Status / Rohs Status: Compliant

Signal-to-(Noise + Distortion) (SINAD) Ratio
This is the measured ratio of SINAD at the output of the ADC.
The signal is the rms amplitude of the fundamental. Noise is the
sum of all nonfundamental signals up to half the sampling
frequency (f
number of quantization levels in the digitization process, the
more levels, the smaller the quantization noise. The theoretical
SINAD ratio for an ideal N-bit converter with a sine wave input
is given by
Thus for a 12-bit converter, this is 74 dB.
SINAD = (6.02N + 1.76) dB
S
/2), excluding dc. The ratio is dependent on the
Rev. B | Page 11 of 24
Total Harmonic Distortion (THD)
THD is the ratio of the rms sum of harmonics to the
fundamental. For the AD7923, it is defined as
where V
V
sixth harmonics.
4
, V
THD
5
, and V
(
1
dB
is the rms amplitude of the fundamental and V
)
=
6
are the rms amplitudes of the second through the
20
log
V
2
2
+
V
3
2
+
V
V
1
4
2
+
V
5
2
+
V
6
2
AD7923
2
, V
3
,