Datasheet 搜索 > DA转换器 > ADI（亚德诺） > AD7948BRSZ 数据手册 > AD7948BRSZ 数据手册 2/16 页
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AD7948BRSZ 数据手册 - ADI（亚德诺）
制造商:
ADI（亚德诺）
分类:
DA转换器
封装:
SSOP-20
描述:
ANALOG DEVICES AD7948BRSZ 数模转换器, 12 bit, 17 MSPS, 串行, 3V 至 5.5V, 4.5V 至 5.5V, SSOP, 20 引脚
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AD7948BRSZ数据手册
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REV. B
–2–
AD7943/AD7945/AD7948–SPECIFICATIONS
1
Parameter B Grades
2
T Grade
2, 3
Units Test Conditions/Comments
ACCURACY
Resolution 12 12 Bits 1 LSB = V
REF
/2
12
= 2.44 mV when V
REF
=10V
Relative Accuracy ±0.5 ±0.5 LSB max
Differential Nonlinearity ±0.5 ±0.5 LSB max All Grades Guaranteed Monotonic over
Temperature
Gain Error
T
MIN
to T
MAX
±2 ±2 LSB max
Gain Temperature Coefficient
4
2 2 ppm FSR/°C typ
5 5 ppm FSR/°C max
Output Leakage Current
I
OUT1
@ +25°C 10 10 nA max See Terminology Section
T
MIN
to T
MAX
100 100 nA max Typically 20 nA over Temperature
REFERENCE INPUT
Input Resistance 6 6 kΩ min Typical Input Resistance = 9 kΩ
12 12 kΩ max
DIGITAL INPUTS
V
INH
, Input High Voltage 2.4 2.4 V min
V
INL
, Input Low Voltage 0.8 0.8 V max
I
INH
, Input Current ±1 ±1 µA max
C
IN
, Input Capacitance
4
10 10 pF max
DIGITAL OUTPUT (AD7943 SRO) For 1 CMOS Load
Output Low Voltage (V
OL
) 0.2 0.2 V max
Output High Voltage (V
OH
)V
DD
– 0.2 V
DD
– 0.2 V min
POWER REQUIREMENTS
V
DD
Range 4.5/5.5 4.5/5.5 V min/V max
Power Supply Sensitivity
4
∆Gain/∆V
DD
–75 –75 dB typ
I
DD
(AD7943) 5 5 µA max V
INH
= V
DD
– 0.1 V min, V
INL
= 0.1 V max.
SRO Open Circuit. No STB Signal. Typically
1 µA. Typically 100 µA with a 1 MHz STB
Frequency. At Input Levels of 0.8 V and 2.4 V,
I
DD
Is Typically 2.5 mA.
I
DD
(AD7945, AD7948) 5 5 µA max V
INH
= V
DD
– 0.1 V min, V
INL
= 0.1 V max.
Typically 1 µA. At Input Levels of 0.8 V and
2.4 V, I
DD
Is Typically 2.5 mA.
NOTES
1
The AD7943, AD7945 and AD7948 are specified in the normal current mode configuration and in the biased current mode for single-supply applications.
Figures 14 and 15 are examples of normal mode operation.
2
Temperature ranges as follows: B Grades: –40°C to +85°C; T Grade: –55°C to +125°C.
3
The T Grade applies to the AD7945 only.
4
Guaranteed by design.
Specifications subject to change without notice.
NORMAL MODE
(AD7943: V
DD
= +4.5 V to +5.5 V; V
IOUT1
= V
IOUT2
= AGND = 0 V; V
REF
= +10 V; T
A
= T
MIN
to T
MAX
, unless otherwise noted.
AD7945, AD7948: V
DD
= +4.5 V to +5.5 V; V
IOUT1
= AGND = 0 V; V
REF
= +10 V; T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
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