AD7440 Analog Devices, AD7440 Datasheet - Page 5

• Manufacturer Part Number: AD7440
• Description: Differential Input, 1 MSPS, 12- (AD7450A) & 10-Bit (AD7440) ADCs
• Manufacturer: Analog Devices

Specifications of AD7440

• Resolution (bits): 10bit
• # Chan: 1
• Sample Rate: 1MSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p
• Adc Architecture: SAR
• Pkg Type: SOT

AD7450A–SPECIFICATIONS
Table 2. V
V
Parameter
DYNAMIC PERFORMANCE
DC ACCURACY
ANALOG INPUT
REFERENCE INPUT
LOGIC INPUTS
LOGIC OUTPUTS
REF
Signal-to-(Noise + Distortion) (SINAD)
Total Harmonic Distortion (THD)
Peak Harmonic or Spurious Noise
Intermodulation Distortion (IMD)
Aperture Delay
Aperture Jitter
Full Power Bandwidth
Resolution
Integral Nonlinearity (INL)
Differential Nonlinearity (DNL)
Zero-Code Error
Positive Gain Error
Negative Gain Error
Full-Scale Input Span
Absolute Input Voltage
DC Leakage Current
Input Capacitance
V
DC Leakage Current
V
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
REF
REF
Second-Order Terms
Third-Order Terms
V
V
= 2.5 V; V
IN+
IN–
Input Voltage
Input Capacitance
DD
= 2.7 V to 3.6 V, f
CM
2
2
IN
1
2
= V
2
2
INL
IN
REF
INH
2, 3
7
OL
OH
; T = T
2
A
SCLK
2
MIN
2
2
2
= 18 MHz, f
7
to T
2
MAX
, unless otherwise noted. Temperature range for B Version: –40°C to +85°C.
S
Test Conditions/Comments
f
V
V
V
V
fa = 90 kHz, fb = 110 kHz
@ –3 dB
@ –0.1 dB
Guaranteed no missed codes to 12 bits
2 × V
V
V
V
(±1% tolerance for specified performance)
V
(±1% tolerance for specified performance)
Typically 10 nA, V
V
V
I
When in track-and-hold
When in track-and-hold
= 1 MSPS, V
SINK
IN
DD
DD
DD
DD
CM
CM
DD
DD
DD
DD
= 100 kHz
= 4.75 V to 5.25 V; I
= 4.75 V to 5.25 V, –86 dB typ
= 2.7 V to 3.6 V, –84 dB typ
= 4.75 V to 5.25 V, –86 dB typ
= 2.7 V to 3.6 V, –84 dB typ
= V
= V
= 4.75 V to 5.25 V
= 2.7 V to 3.6 V
= 2.7 V to 3.6 V; I
= 200 μA
REF
REF
REF
4
Rev. C | Page 5 of 28
REF
= 2.0 V; V
IN
= 0 V or V
SOURCE
SOURCE
= 200 μA
DD
= 200 μA
DD
= 4.75 V to 5.25 V, f
B Version
70
–76
–74
–76
–74
–89
–89
5
50
20
2.5
12
±1
±0.95
±6
±2
±2
V
V
V
±1
30/10
2.5
2.0
±1
10/30
2.4
0.8
±1
10
2.8
2.4
0.4
±1
10
Twos complement
IN+
CM
CM
SCLK
5
6
± V
± V
– V
= 18 MHz, f
IN–
REF
REF
/2
/2
AD7440/AD7450A
S
= 1 MSPS,
Unit
dB min
dB max
dB max
dB max
dB max
dB typ
dB typ
ns typ
ps typ
MHz typ
MHz typ
LSB max
LSB max
LSB max
LSB max
V
μA max
pF typ
V
V
μA max
V min
V max
μA max
pF max
V min
V min
V max
pF max
Bits
LSB max
V
V
pF typ
μA max