MAX1289ETA+T Maxim Integrated Products, MAX1289ETA+T Datasheet - Page 14

• Manufacturer Part Number: MAX1289ETA+T
• Description: IC ADC 12BIT 150KSPS 8-TDFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX1289ETA+T

• Number Of Bits: 12
• Sampling Rate (per Second): 150k
• Data Interface: MICROWIRE™, QSPI™, Serial, SPI™
• Number Of Converters: 1
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-WDFN Exposed Pad
• Number Of Adc Inputs: 1
• Architecture: SAR
• Conversion Rate: 150 KSPs
• Resolution: 12 bit
• Input Type: Voltage
• Interface Type: Serial
• Voltage Reference: External
• Supply Voltage (max): 3.3 V
• Maximum Power Dissipation: 1481 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: MAX1289ETA+T

Aperture jitter (t
the time between the samples. Aperture delay (t
the time between the rising edge of the sampling clock
and the instant when an actual sample is taken.
For a waveform perfectly reconstructed from digital sam-
ples, signal-to-noise ratio (SNR) is the ratio of full-scale
analog input (RMS value) to the RMS quantization error
(residual error). The ideal, theoretical minimum analog-to-
digital noise is caused by quantization error only and
results directly from the ADC’s resolution (N bits):
In reality, there are other noise sources besides quanti-
zation noise: thermal noise, reference noise, clock jitter,
etc. SNR is computed by taking the ratio of the RMS
signal to the RMS noise, which includes all spectral
components minus the fundamental, the first five har-
monics, and the DC offset.
150ksps, 12-Bit, 2-Channel Single-Ended, and
1-Channel True-Differential ADCs
Figure 11. Power-Supply and Grounding Connections
14
R* = 5Ω
______________________________________________________________________________________
+5V OR
*OPTIONAL
V
+3V
DD
0.1µF
SNR = (6.02
AJ
MAX1286–
MAX1289
) is the sample-to-sample variation in
GND
SUPPLIES

Signal-to-Noise Ratio
N + 1.76)dB
Aperture Definitions
V
LOGIC
OR +3V
+5V OR
+3V
CIRCUITRY
= +5V
DIGITAL
DGND
GND
AD
) is
Signal-to-noise plus distortion (SINAD) is the ratio of the
fundamental input frequency’s RMS amplitude to RMS
equivalent of all other ADC output signals.
Effective number of bits (ENOB) indicates the global
accuracy of an ADC at a specific input frequency and
sampling rate. An ideal ADC’s error consists of quanti-
zation noise only. With an input range equal to the full-
scale range of the ADC, calculate the effective number
of bits as follows:
Total harmonic distortion (THD) is the ratio of the RMS
sum of the first five harmonics of the input signal to the
fundamental itself. This is expressed as:
where V
V
monics.
Spurious-free dynamic range (SFDR) is the ratio of RMS
amplitude of the fundamental (maximum signal compo-
nent) to the RMS value of the next-largest distortion
component.
TRANSISTOR COUNT: 6922
PROCESS: BiCMOS
For the latest package outline information and land patterns, go
to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in
the package code indicates RoHS status only. Package draw-
ings may show a different suffix character, but the drawing per-
tains to the package regardless of RoHS status.
5
PACKAGE
are the amplitudes of the 2nd- through 5th-order har-
8 SOT23
8 TDFN
TYPE
SINAD (dB) = 20
THD
1
is the fundamental amplitude, and V
=
ENOB = (SINAD - 1.76) / 6.02
20
PACKAGE
Signal-to-Noise Plus Distortion
×
Spurious-Free Dynamic Range
T833+2
log
CODE
K8F-4
⎛
⎜
⎜
⎝

Total Harmonic Distortion
Package Information
log (Signal
Effective Number of Bits
V
2
2
OUTLINE NO.
+
Chip Information
V
21-0078
21-0137
3
2
V
+
RMS
1
V
4
2
/ Noise
+
V
PATTERN NO.
5
2
90-0176
90-0059
LAND
⎞
⎟
⎟
⎠
RMS
2
through
)