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AD7687 Datasheet

  • AD7687

  • 3mW, 100kSPS, 14-Bit ADC in 6-Lead SOT-23

  • 30頁(yè)

  • AD

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AD7940
SPECIFICATIONS
1
V
DD
= 2.50 V to 5.5 V, f
SCLK
= 2.5 MHz, f
SAMPLE
= 100 kSPS, unless otherwise noted; T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Table 2.
Parameter
DYNAMIC PERFORMANCE
Signal-to-Noise + Distortion (SINAD)
2
Total Harmonic Distortion (THD)
2
Peak Harmonic or Spurious Noise (SFDR)
2
Intermodulation Distortion (IMD)
2
Second-Order Terms
Third-Order Terms
Aperture Delay
Aperture Jitter
Full Power Bandwidth
DC ACCURACY
Resolution
Integral Nonlinearity
2
Offset Error
2
Gain Error
2
ANALOG INPUT
Input Voltage Ranges
DC Leakage Current
Input Capacitance
LOGIC INPUTS
Input High Voltage, V
INH
Input Low Voltage, V
INL
Input Current, I
IN
Input Capacitance, C
IN2, 3
LOGIC OUTPUTS
Output High Voltage, V
OH
Output Low Voltage, V
OL
Floating-State Leakage Current
Floating-State Output Capacitance
2, 3
Output Coding
CONVERSION RATE
Conversion Time
Track-and-Hold Acquisition Time
Throughput Rate
POWER REQUIREMENTS
V
DD
I
DD
Normal Mode (Static)
Normal Mode (Operational)
Full Power-Down Mode
B Version
81
鈭?8
鈭?5
鈭?4
鈭?00
20
30
7
2
14
13
鹵1
鹵2
鹵6
鹵8
0 to V
DD
鹵0.3
30
2.4
0.4
0.8
鹵0.3
10
1
Unit
dB min
dB typ
dB typ
dB typ
dB typ
ns max
ps typ
MHz typ
MHz typ
Bits min
Bits min
LSB max
LSB max
LSB max
LSB max
V
碌A(chǔ) max
pF typ
V min
V max
V max
碌A(chǔ) max
pF max
Test Conditions/Comments
f
IN
= 10 kHz sine wave
@ 鈭? dB
@ 鈭?.1 dB
V
DD
= 2.5 V to 4.096 V
V
DD
> 4.096 V
V
DD
= 2.5 V to 4.096 V
V
DD
> 4.096 V
V
DD
= 3 V
V
DD
= 5 V
Typically 10 nA, V
IN
= 0 V or V
DD
V
DD
鈥?0.2
V min
0.4
V max
鹵0.3
碌A(chǔ) max
10
pF max
Straight (Natural) Binary
8
500
400
100
2.50/5.5
5.2
2
4.8
1.9
0.5
0.3
碌s max
ns max
ns max
kSPS max
V min/V max
mA max
mA max
mA max
mA max
碌A(chǔ) max
碌A(chǔ) max
Rev. 0 | Page 3 of 20
I
SOURCE
= 200 碌A(chǔ); V
DD
= 2.50 V to 5.25 V
I
SINK
= 200 碌A(chǔ)
16 SCLK cycles
Full-scale step input
Sine wave input 鈮?10 kHz
See the Serial Interface section
Digital I/P
S
= 0 V or V
DD
V
DD
= 5.5 V; SCLK on or off
V
DD
= 3.6 V; SCLK on or off
V
DD
= 5.5 V; f
SAMPLE
= 100 kSPS; 3.3 mA typ
V
DD
= 3.6 V; f
SAMPLE
= 100 kSPS; 1.29 mA typ
SCLK on or off. V
DD
= 5.5 V
SCLK on or off. V
DD
= 3.6 V

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