AD7870SQ Analog Devices Inc, AD7870SQ Datasheet - Page 5

• Manufacturer Part Number: AD7870SQ
• Description: IC ADC 12BIT SAMPLING 3V 24-CDIP
• Manufacturer: Analog Devices Inc

Specifications of AD7870SQ

• Rohs Status: RoHS non-compliant
• Number Of Bits: 12
• Sampling Rate (per Second): 100k
• Data Interface: Serial, Parallel
• Number Of Converters: 1
• Power Dissipation (max): 95mW
• Voltage Supply Source: Dual ±
• Operating Temperature: -55°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: 24-CDIP (0.300", 7.62mm)

Parameter
ANALOG INPUT
REFERENCE OUTPUT
LOGIC INPUTS
LOGIC OUTPUTS
CONVERSION TIME
POWER REQUIREMENTS
1
2
3
4
5
For the AD7875, the temperature range for the K and L versions is from 0°C to +70°C; for the B and C versions is−40°C to +85°C; and for the T version is −55°C to
+125°C. For the AD7876, the temperature range for the B and C versions is from −40°C to +85°C and for the T version is−55°C to +125°C.
Includes internal reference error and is calculated after unipolar offset error (AD7875) or bipolar zero error (AD7876) has been adjusted out. Full-scale error refers to
both positive and negative full-scale error for the AD7876.
Dynamic performance parameters are not tested on the AD7876, but these are typically the same as for the AD7875.
SNR calculation includes distortion and noise components.
Sample tested @ +25°C to ensure compliance.
AD7875 Input Voltage Range
AD7875 Input Current
AD7876 Input Voltage Range
AD7876 Input Current
REF OUT @ +25°C
REF OUT Tempco
Reference Load Sensitivity
Input High Voltage, V
Input Low Voltage, V
Input Current, I
Input Current (12/8/CLK Input Only)
Input Capacitance, C
Output High Voltage, V
Output Low Voltage, V
DB11–DB0
External Clock (f
Internal Clock
(ΔREF OUT/ΔI)
Floating-State Leakage Current
Floating-State Output
Capacitance
IN
CLK
5
= 2.5 MHz)
INL
IN
INH
5
OL
OH
K, B
0 to +5
500
±10
±600
2.99
3.01
±60
−1
2.4
0.8
±10
±10
10
4.0
0.4
10
15
8
6.5/9
AD7875/AD7876
As per AD7870
L, C
0 to +5
500
±10
±600
2.99
3.01
±35
−1
2.4
0.8
±10
±10
10
4.0
0.4
10
15
8
6.5/9
Rev. C | Page 5 of 28
T
0 to +5
500
±10
±600
2.99
3.01
±60
−1
2.4
0.8
±10
±10
10
4.0
0.4
10
15
8
6.5/9
1
Units
μA max
V
μA max
V min
V max
ppm/°C max
mV max
V min
V max
μA max
μA max
pF max
V min
V max
μA max
pF max
μs max
μs min/μs
max
V
Test Conditions/Comments
Typical tempco Is ±20 ppm/°C
Reference load current change (0 μA to 500 μA).
Reference load should not be changed during
conversion.
V
V
V
V
I
I
Refer to the power requirements in Table 1.
SOURCE
SINK
DD
DD
IN
IN
= 0 V to V
= V
= 5 V ± 5%
= 5 V ± 5%
= 1.6 mA
= 40 mA
SS
AD7870/AD7875/AD7876
to V
DD
DD