AD7870/AD7875/AD7876
AD7875/AD78761
Parameter
K, B
L, C
T
Units
Test Conditions/Comments
ANALOG INPUT
AD7875 Input Voltage Range
AD7875 Input Current
AD7876 Input Voltage Range
AD7876 Input Current
REFERENCE OUTPUT
REF OUT @ +25°C
0 to +5
500
10
0 to +5
500
10
0 to +5
500
10
V
μA max
V
μA max
600
600
600
2.99
3.01
60
2.99
3.01
35
2.99
3.01
60
V min
V max
REF OUT Tempco
ppmꢀ°C max Typical tempco Is 20 ppmꢀ°C
Reference Load Sensitivity
(ΔREF OUTꢀΔI)
−1
−1
−1
mV max
Reference load current change (0 μA to 500 μA).
Reference load should not be changed during
conversion.
LOGIC INPUTS
Input High Voltage, VINH
Input Low Voltage, VINL
Input Current, IIN
2./
0.8
10
10
10
2./
0.8
10
10
10
2./
0.8
10
10
10
V min
V max
μA max
μA max
pF max
VDD = 5 V 5ꢁ
VDD = 5 V 5ꢁ
VIN = 0 V to VDD
Input Current (12ꢀ8ꢀCLK Input Only)
VIN = VSS to VDD
5
Input Capacitance, CIN
LOGIC OUTPUTS
Output High Voltage, VOH
Output Low Voltage, VOL
DB11–DB0
/.0
0./
/.0
0./
/.0
0./
V min
V max
ISOURCE = /0 mA
ISINK = 1.6 mA
Floating-State Leakage Current
Floating-State Output
Capacitance5
10
15
10
15
10
15
μA max
pF max
CONVERSION TIME
External Clock (fCLK = 2.5 MHz)
Internal Clock
8
8
8
μs max
μs minꢀμs
max
6.5ꢀ9
6.5ꢀ9
6.5ꢀ9
POWER REQUIREMENTS
As per AD7870
Refer to the power requirements in Table 1.
1 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−/0°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 −/0°C to +85°C and for the T version is−55°C to +125°C.
2 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.
3 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.
5 Sample tested @ +25°C to ensure compliance.
Rev. C | Page 5 of 28
ADI [ ADI ]
