AD7940 Analog Devices, AD7940 Datasheet - Page 3

• Manufacturer Part Number: AD7940
• Description: 3 mW, 100 kSPS, 14-Bit ADC in 6-Lead SOT-23
• Manufacturer: Analog Devices

Specifications of AD7940

• Resolution (bits): 14bit
• # Chan: 1
• Sample Rate: 100kSPS
• Interface: Ser,SPI
• Analog Input Type: SE-Uni
• Ain Range: Uni Vdd
• Adc Architecture: SAR
• Pkg Type: SOP,SOT

SPECIFICATIONS
V
Table 2.
Parameter
DYNAMIC PERFORMANCE
DC ACCURACY
ANALOG INPUT
LOGIC INPUTS
LOGIC OUTPUTS
CONVERSION RATE
POWER REQUIREMENTS
DD
Signal-to-Noise + Distortion (SINAD)
Total Harmonic Distortion (THD)
Peak Harmonic or Spurious Noise (SFDR)
Intermodulation Distortion (IMD)
Aperture Delay
Aperture Jitter
Full Power Bandwidth
Resolution
Integral Nonlinearity
Offset Error
Gain Error
Input Voltage Ranges
DC Leakage Current
Input Capacitance
Input High Voltage, V
Input Low Voltage, V
Input Current, I
Input Capacitance, C
Output High Voltage, V
Output Low Voltage, V
Floating-State Leakage Current
Floating-State Output Capacitance
Output Coding
Conversion Time
Track-and-Hold Acquisition Time
Throughput Rate
V
I
DD
DD
= 2.50 V to 5.5 V, f
Second-Order Terms
Third-Order Terms
Normal Mode (Static)
Normal Mode (Operational)
Full Power-Down Mode
2
2
IN
INL
2
IN
SCLK
INH
2, 3
OL
OH
1
= 2.5 MHz, f
2
2
2, 3
2
SAMPLE
2
= 100 kSPS, unless otherwise noted; T
B Version
81
−98
−95
−94
−100
20
30
7
2
14
13
±1
±2
±6
±8
0 to V
±0.3
30
2.4
0.4
0.8
±0.3
10
V
0.4
±0.3
10
8
500
400
100
2.50/5.5
5.2
2
4.8
1.9
0.5
0.3
DD
– 0.2
Straight (Natural) Binary
DD
Rev. A | Page 3 of 20
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
µA max
pF typ
V min
V max
V max
µA max
pF max
V min
V max
µA max
pF max
µs max
ns max
ns max
kSPS max
V min/V max
mA max
mA max
mA max
mA max
µA max
µA max
A
= T
Test Conditions/Comments
f
@ −3 dB
@ −0.1 dB
V
V
V
V
V
V
Typically 10 nA, V
I
I
16 SCLK cycles
Full-scale step input
Sine wave input ≤ 10 kHz
See the Serial Interface section
Digital I/P
V
V
V
V
SCLK on or off. V
SCLK on or off. V
MIN
SOURCE
SINK
IN
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
= 10 kHz sine wave
to T
= 2.5 V to 4.096 V
> 4.096 V
= 2.5 V to 4.096 V
> 4.096 V
= 3 V
= 5 V
= 200 µA
= 5.5 V; SCLK on or off
= 3.6 V; SCLK on or off
= 5.5 V; f
= 3.6 V; f
= 200 µA; V
MAX
S
, unless otherwise noted.
= 0 V or V
SAMPLE
SAMPLE
DD
DD
IN
DD
= 100 kSPS; 3.3 mA typ
= 100 kSPS; 1.29 mA typ
= 5.5 V
= 3.6 V
= 0 V or V
= 2.50 V to 5.25 V
DD
DD
AD7940