AD7859 Analog Devices, AD7859 Datasheet - Page 2

• Manufacturer Part Number: AD7859
• Description: 3 V to 5 V Single Supply, 200 kSPS 8-Channel, 12-Bit, Parallel Sampling ADCs
• Manufacturer: Analog Devices

Specifications of AD7859

• Resolution (bits): 12bit
• # Chan: 8
• Sample Rate: 200kSPS
• Interface: Byte,Par
• Analog Input Type: SE-Bip,SE-Uni
• Ain Range: (Vref) p-p,Uni (Vref)
• Adc Architecture: SAR
• Pkg Type: LCC,QFP

AD7859/AD7859L–SPECIFICATIONS
External Reference, f
(AD7859L); SLEEP = Logic High; T
Parameter
DYNAMIC PERFORMANCE
DC ACCURACY
ANALOG INPUT
REFERENCE INPUT/OUTPUT
LOGIC INPUTS
LOGIC OUTPUTS
Signal to Noise + Distortion Ratio
Total Harmonic Distortion (THD)
Peak Harmonic or Spurious Noise
Intermodulation Distortion (IMD)
Second Order Terms
Third Order Terms
Channel-to-Channel Isolation
Resolution
Integral Nonlinearity
Differential Nonlinearity
Unipolar Offset Error
Unipolar Offset Error Match
Positive Full-Scale Error
Negative Full-Scale Error
Full-Scale Error Match
Bipolar Zero Error
Bipolar Zero Error Match
Input Voltage Ranges
Leakage Current
Input Capacitance
REF
Input Impedance
REF
REF
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
CAL Pin
(SNR)
IN
OUT
OUT
Input Voltage Range
Output Voltage
Tempco
IN
CLKIN
IN
INL
INH
4
OL
OH
= 4 MHz (for L Version: 1.8 MHz (0 C to +70 C) and 1 MHz (–40 C to +85 C)); f
A
3
4
= T
MIN
A Version
70
–78
–78
–78
–78
–80
12
2(3)
1
2
0 to V
20
2.3/V
150
2.3/2.7
20
2.4
2.1
3
2.4
0.8
0.6
10
4
2.4
0.4
10
1
1
5
2
5
2
2
1
V
1
10
10
to T
REF
DD
REF
/2
MAX
Straight (Natural) Binary
, unless otherwise noted.) Specifications in () apply to the AD7859L.
1
2s Complement
B Version
71
–78
–78
–78
–78
–80
12
2
1
2
0 to V
20
2.3/V
150
2.3/2.7
20
2.4
2.1
3
2.4
0.8
0.6
10
4
2.4
0.4
10
0.5
1
5
2
5
2
2
1
V
1
10
10
REF
DD
REF
/2
1
Units
dB min
dB max
dB max
dB typ
dB typ
dB typ
Bits
LSB max
LSB max
LSB max
LSB typ
LSB max
LSB max
LSB typ
LSB max
LSB max
LSB typ
LSB typ
Volts
Volts
pF typ
V min/max
k typ
V min/max
ppm/ C typ
V min
V min
V min
V min
V max
V max
pF max
V min
V min
V max
pF max
A max
A max
A max
–2–
1, 2
Typically SNR is 72 dB
V
(for L Version: f
V
(for L Version: f
V
(for L Version: f
fa = 9.983 kHz, fb = 10.05 kHz, f
fa = 9.983 kHz, fb = 10.05 kHz, f
V
5 V Reference V
i.e., AIN(+) – AIN(–) = 0 to V
i.e., AIN(+) – AIN(–) = –V
Below AIN(–) But Cannot Go Below 0 V
AV
AV
AV
AV
AV
Typically 10 nA, V
AV
Bipolar Input Range
Test Conditions/Comments
(for L Version: f
(for L Version: f
Guaranteed No Missed Codes to 12 Bits
Biased Up But AIN(+) Cannot Go Below AIN(–)
Should Be Biased to +V
Functional from 1.2 V
AV
AV
I
Unipolar Input Range
SINK
IN
IN
IN
IN
(AV
DD
DD
DD
DD
DD
DD
DD
DD
= 10 kHz Sine Wave, f
= 10 kHz Sine Wave, f
= 10 kHz Sine Wave, f
= 25 kHz
= 1.6 mA
= DV
= DV
= DV
= DV
= DV
= DV
= DV
= DV
DD
= DV
DD
DD
DD
DD
DD
DD
DD
DD
DD
= 4.5 V to 5.5 V
= 3.0 V to 3.6 V
= 4.5 V to 5.5 V
= 3.0 V to 3.6 V
= 4.5 V to 5.5 V
= 3.0 V to 3.6 V
= 4.5 V to 5.5 V
= 3.0 V to 3.6 V
SAMPLE
SAMPLE
SAMPLE
SAMPLE
SAMPLE
DD
= +3.0 V to +5.5 V, REF
IN
= 5 V
= 0 V or V
= 100 kHz @ f
= 100 kHz @ f
= 100 kHz @ f
= 100 kHz @ f
= 100 kHz @ f
REF
SAMPLE
SAMPLE
SAMPLE
/2 and AIN(+) Can Go
SAMPLE
REF
/2 to +V
REF
DD
SAMPLE
SAMPLE
= 200 kHz (AD7859) 100 kHz
= 200 kHz
= 200 kHz
= 200 kHz
, AIN(–) Can Be
CLKIN
CLKIN
CLKIN
CLKIN
CLKIN
REF
= 200 kHz
= 200 kHz
/2, AIN(–)
IN
= 2 MHz)
= 2 MHz)
= 2 MHz)
= 2 MHz)
= 2 MHz)
/REF
OUT
= 2.5 V
REV. A