AD7657 Analog Devices, AD7657 Datasheet - Page 6

• 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 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.
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
CC
CC
, IV
, IV
OL
DD
DD
OH
)
, IV
, IV
)
SS
SS
, IV
, IV
DRIVE
DRIVE
2, 3
3
, IDV
, IDV
CC
CC
)
)
B Version
V
0.2
±1
10
3.1
550
250
5/15
−5/−15
5
5
3/5
28
26
0.25
80
143
140
100
0.25
7
35
DRIVE
Twos complement
− 0.2
1
Rev. C | Page 6 of 32
Y Version
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
1
Unit
V min
V max
μA max
pF max
μs max
ns max
kSPS
V nom min/max
V nom min/max
V nom
V nom
V nom min/max
mA max
mA max
mA max
mA max
mA max
μA max
mW max
mW max
mW max
μW max
Test Conditions/Comments
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
CC
= 250 kSPS
= 5.25 V, 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
= V
DD
DD
DD
DRIVE
DRIVE
= 16.5 V,
= 16.5 V,
= 16.5 V,
= 5.25 V,
= 5.25 V,