AD7657 Analog Devices, AD7657 Datasheet - Page 4

• Manufacturer Part Number: AD7657
• Description: 250 kSPS, 6-Channel, Simultaneous Sampling, Bipolar, 14-Bit A/D Converter
• Manufacturer: Analog Devices

Specifications of AD7657

• Resolution (bits): 14bit
• # Chan: 6
• Sample Rate: 250kSPS
• Interface: Par,Ser,SPI
• Analog Input Type: SE-Bip
• Ain Range: Bip (Vref) x 2,Bip (Vref) x 4,Bip 10V,Bip 5.0V
• Adc Architecture: SAR
• Pkg Type: QFP

AD7656/AD7657/AD7658
Parameter
LOGIC INPUTS
LOGIC OUTPUTS
CONVERSION RATE
POWER REQUIREMENTS
1
2
3
Temperature ranges are as follows: B version is −40°C to +85°C and Y version is −40°C to +125°C.
See the Terminology section.
Sample tested during initial release to ensure compliance.
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
V
AV
DV
V
I
I
I
Power Dissipation
TOTAL
SS
DD
DD
SS
DRIVE
Normal Mode (Static)
Normal Mode (Operational)
(Operational)
Partial Power-Down Mode
Full Power-Down Mode (STBY Pin)
Normal Mode (Static)
Normal Mode (Operational)
Partial Power-Down Mode
Full Power-Down Mode (STBY Pin)
CC
(Operational)
CC
(Includes IAV
(Includes IAV
IN
)
CC
CC
, IV
, IV
IN
INL
INH
)
OL
DD
DD
3
)
OH
)
)
, IV
, IV
)
SS
SS
, IV
, IV
DRIVE
DRIVE
2, 3
3
, IDV
, IDV
CC
CC
)
)
B Version
0.7 × V
0.3 × V
±1
10
V
0.2
±1
10
3.1
550
250
5/15
−5/−15
5
5
3/5
28
26
0.25
0.25
7
80
143
140
35
100
DRIVE
Twos complement
− 0.2
DRIVE
DRIVE
1
Rev. C | Page 4 of 32
Y Version
0.7 × V
0.3 × V
±1
10
V
0.2
±1
10
3.1
550
250
5/15
−5/−15
5
5
3/5
28
26
0.25
0.25
7
80
143
140
35
100
DRIVE
− 0.2
DRIVE
DRIVE
1
pF max
V max
pF max
μs max
ns max
kSPS
mA max
mA max
μA max
μW max
Unit
V min
V max
μA max
V min
μA max
V nom min/max
V nom min/max
V nom
V nom
V nom min/max
mA max
mA max
mA max
mW max
mW max
mW max
Test Conditions/Comments
Typically 10 nA, V
I
I
Parallel interface mode only
For 4 × V
For 4 × V
Digital I/P
AV
V
f
V
V
V
AV
V
SCLK on or off, AV
V
AV
V
f
SOURCE
SINK
SAMPLE
SAMPLE
SS
DD
SS
DD
SS
DD
SS
CC
CC
CC
= −16.5 V
= −16.5 V, f
= −16.5 V
= −16.5 V
= 16.5 V, V
= 16.5 V, f
= 16.5 V, V
= 200 μA
= DV
= DV
= DV
= 250 kSPS, AV
= 200 μA
= 250 kSPS
REF
REF
CC
S
CC
CC
= 0 V or V
range, V
range, V
= V
= V
= V
SAMPLE
SS
SS
SAMPLE
DRIVE
DRIVE
DRIVE
= −16.5 V
= −16.5 V
IN
CC
= 250 kSPS
= 5.25 V, V
= 0 V or V
= 5.25 V, V
= 5.25 V, V
DD
DD
CC
= 250 kSPS
= DV
DRIVE
= DV
= 10 V to 16.5 V
= −10 V to −16.5 V
CC
CC
= V
DRIVE
= V
DD
DD
DD
DRIVE
DRIVE
= 16.5 V,
= 16.5 V,
= 16.5 V,
= 5.25 V,
= 5.25 V,