AD7890ARZ-10 Analog Devices Inc, AD7890ARZ-10 Datasheet - Page 6

• Manufacturer Part Number: AD7890ARZ-10
• Description: IC DAS 12BIT 8CH 24-SOIC
• Manufacturer: Analog Devices Inc
• Type: Data Acquisition System (DAS)r

Specifications of AD7890ARZ-10

• Resolution (bits): 12 b
• Data Interface: Serial
• Sampling Rate (per Second): 117k
• Voltage Supply Source: Single Supply
• Voltage - Supply: ±10V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-SOIC (7.5mm Width)
• Input Channel Type: Single Ended
• Supply Voltage Range - Analogue: 4.75V To 5.25V
• Supply Current: 10mA
• Digital Ic Case Style: MSOP
• No. Of Pins: 24
• Sampling Rate: 117kSPS
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD7890
Pin
17
18
19
20
21
22
23
24
Mnemonic
V
V
V
V
V
V
V
REF OUT/REF IN Voltage Reference Output/Input. The part can be used with either its own internal reference or with
IN2
IN3
IN4
IN5
IN6
IN7
IN8
Description
Analog Input Channel 2. Single-ended analog input. The analog input range on is ± 10 V (AD7890-
10), 0 V to 4.096 V (AD7890-4) and 0 V to 2.5 V (AD7890-2). The channel to be converted is
selected using the A0, A1 and A2 bits in the control register. The multiplexer has guaranteed break-
before-make operation.
Analog Input Channel 3. Single-ended analog input. The analog input range on is ± 10 V (AD7890-
10), 0 V to 4.096 V (AD7890-4) and 0 V to 2.5 V (AD7890-2). The channel to be converted is
selected using the A0, A1 and A2 bits in the control register. The multiplexer has guaranteed break-
before-make operation.
Analog Input Channel 4. Single-ended analog input. The analog input range on is ± 10 V (AD7890-
10), 0 V to 4.096 V (AD7890-4) and 0 V to 2.5 V (AD7890-2). The channel to be converted is
selected using the A0, A1 and A2 bits in the control register. The multiplexer has guaranteed break-
before-make operation.
Analog Input Channel 5. Single-ended analog input. The analog input range on is ± 10 V (AD7890-
10), 0 V to 4.096 V (AD7890-4) and 0 V to 2.5 V (AD7890-2). The channel to be converted is
selected using the A0, A1 and A2 bits in the control register. The multiplexer has guaranteed break-
before-make operation.
Analog Input Channel 6. Single-ended analog input. The analog input range on is ± 10 V (AD7890-
10), 0 V to 4.096 V (AD7890-4) and 0 V to 2.5 V (AD7890-2). The channel to be converted is
selected using the A0, A1 and A2 bits in the control register. The multiplexer has guaranteed break-
before-make operation.
Analog Input Channel 7. Single-ended analog input. The analog input range on is ± 10 V (AD7890-
10), 0 V to 4.096 V (AD7890-4) and 0 V to 2.5 V (AD7890-2). The channel to be converted is
selected using the A0, A1 and A2 bits in the control register. The multiplexer has guaranteed break-
before-make operation.
Analog Input Channel 8. Single-ended analog input. The analog input range on is ± 10 V (AD7890-
10), 0 V to 4.096 V (AD7890-4) and 0 V to 2.5 V (AD7890-2). The channel to be converted is
selected using the A0, A1 and A2 bits in the control register. The multiplexer has guaranteed break-
before-make operation.
an external reference source. The on-chip 2.5 V reference voltage is provided at this pin. When
using this internal reference as the reference source for the part, REF OUT should decoupled to
AGND with a 0.1 µF disc ceramic capacitor. The output impedance of this reference source is typically
2 kΩ. When using an external reference source as the reference voltage for the part, the reference
source should be connected to this pin. This overdrives the internal reference and provides the refer-
ence source for the part. The REF IN input is buffered on-chip. The nominal reference voltage for
correct operation of the AD7890 is 2.5 V.
DATA OUT
CONVST
SMODE
DATA IN
CLK IN
DGND
PIN CONFIGURATION
AGND
SCLK
C
RFS
TFS
V
EXT
DD
DIP and SOIC
12
10
11
1
2
3
4
5
6
7
8
9
(Not to Scale)
TOP VIEW
AD7890
24
23
22
21
20
19
18
17
16
15
14
13
REF OUT/REF IN
AGND
SHA IN
MUX OUT
V
V
V
V
V
V
V
V
IN8
IN7
IN6
IN5
IN4
IN3
IN2
IN1