AD7866 Analog Devices, AD7866 Datasheet - Page 2

• Manufacturer Part Number: AD7866
• Description: Dual 1MSPS, 12-Bit, 2-Channel SAR ADC with Serial Interface
• Manufacturer: Analog Devices

Specifications of AD7866

• Resolution (bits): 12bit
• # Chan: 4
• Sample Rate: 1MSPS
• Interface: Ser,SPI
• Analog Input Type: SE-Uni
• Ain Range: Uni (Vref),Uni (Vref) x 2,Uni 2.5V,Uni 5.0V
• Adc Architecture: SAR
• Pkg Type: SOP

AD7866–SPECIFICATIONS
Parameter
DYNAMIC PERFORMANCE
SAMPLE AND HOLD
DC ACCURACY
ANALOG INPUT
REFERENCE INPUT/OUTPUT
LOGIC INPUTS
LOGIC OUTPUTS
Signal to Noise + Distortion (SINAD)
Total Harmonic Distortion (THD)
Peak Harmonic or Spurious Noise (SFDR)
Intermodulation Distortion (IMD)
Aperture Delay
Aperture Jitter
Aperture Delay Matching
Full Power Bandwidth
Resolution
Integral Nonlinearity
Differential Nonlinearity
0 V to V
2
Input Voltage Ranges
DC Leakage Current
Input Capacitance
Reference Input Voltage
Reference Input Voltage Range
DC Leakage Current
Input Capacitance
Reference Output Voltage
V
Reference Temperature Coefficient
REF OUT Error (T
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
Second Order Terms
Third Order Terms
Channel-to-Channel Isolation
Offset Error
Offset Error Match
Gain Error
Gain Error Match
Positive Gain Error
Zero Code Error
Zero Code Error Match
Negative Gain Error
V
Output Impedance
REF
REF
Input Range
Input Range
3
3
IN
MIN
IN
INL
INH
3
OL
to T
OH
6
3
5
MAX
4
)
2
2
3
2
2
A Version
68
–75
–76
–88
–88
–88
10
50
200
12
2
12
± 1.5
–0.95/+1.25
± 8
± 1.2
± 2.5
± 0.2
± 2.5
± 8
± 0.2
± 2.5
0 to V
0 to 2
± 500
1
30
10
2.5
2/3
± 30
± 160
20
2.45/2.55
25
45
50
± 15
0.7 V
0.3 V
± 1
10
V
0.4
± 1
10
Straight (Natural) Binary
Twos Complement
DRIVE
DRIVE
DRIVE
(T
External on D
REF
– 0.2
A
= T
V
REF
1
MIN
to T
B Version
68
–75
–76
–88
–88
–88
10
50
200
12
2
12
± 1
± 1.5
–0.95/+1.25
± 8
± 1.2
± 2.5
± 0.2
± 2.5
± 8
± 0.2
± 2.5
0 to V
0 to 2
± 500
1
30
10
2.5
2/3
± 30
± 160
20
2.45/2.55
25
45
50
± 15
0.7 V
0.3 V
± 1
10
V
0.4
± 1
10
DRIVE
–2–
CAP
MAX
A and D
DRIVE
DRIVE
, V
REF
– 0.2
DD
V
= 2.7 V to 5.25 V, V
REF
1
CAP
Unit
dB min
dB max
dB max
dB typ
dB typ
ns max
ps typ
ps max
MHz typ
MHz typ
Bits
LSB max
LSB max
LSB max
LSB max
LSB typ
LSB max
LSB typ
LSB max
LSB max
LSB typ
LSB max
V
V
nA max
µA max
pF typ
pF typ
V min/V max REF SELECT Pin Tied High
µA max
µA max
pF typ
V min/V max
Ω typ
Ω typ
mV typ
V min
V max
µA max
pF max
V min
V max
µA max
pF max
B, f
dB typ
V
ppm/°C typ
SCLK
= 20 MHz, unless otherwise noted.)
DRIVE
Test Conditions/Comments
f
f
f
@ 3 dB
@ 0.1 dB
B Grade, 0 V to V
0 V to 2
Guaranteed No Missed Codes to 12 Bits
Straight Binary Output Coding
–V
Twos Complement Output Coding
RANGE Pin Low upon CS Falling Edge
RANGE Pin High upon CS Falling Edge
T
85 C < T
When in Track
When in Hold
± 1% for Specified Performance
V
D
V
V
Typically 15 nA, V
I
I
V
Selectable with Either Input Range
IN
IN
IN
SOURCE
SINK
A
REF
DD
DD
DD
CAP
REF
= 300 kHz Sine Wave, f
= 2.7 V to 5.25 V, Reference = 2.5 V
= 300 kHz Sine Wave, f
= 300 kHz Sine Wave, f
= –40 C to +85 C
= 5 V
= 3 V
= 2.7 V to 5.25 V
Pin
A, D
= 200 µA
to +V
= 200 µA
A
CAP
≤
V
REF
REF
B Pins
125 C
REF
Biased about V
Range; ± 0.5 LSB typ
IN
Range Only; ±0.5 LSB typ
= 0 V or V
S
S
S
= 1 MSPS
= 1 MSPS
= 1 MSPS
REF
DRIVE
REV. A
with