5962-9756401QXA Datasheet, PDF (2/16 Pages) Analog Devices – 16-Bit, 100 kSPS/200 kSPS BiCMOS A/D Converters

AD976/AD976A
AD976A–SPECIFICATIONS (–40؇C to +85؇C, FS = 200 kHz, Ref = Internal Reference, VDIG = VANA = +5 V unless
otherwise noted)
Parameter
AD976AA
Min Typ Max
AD976AB
Min Typ Max
AD976AC
Min Typ Max
Units
RESOLUTION
16
16
16
Bits
ANALOG INPUT
Voltage Range
Impedance
Capacitance
± 10
± 10
13
13
22
22
± 10
V
13
kΩ
22
pF
THROUGHPUT SPEED
Complete Cycle
Throughput Rate
5
5
5
µs
200
200
200
kHz
DC ACCURACY
Integral Linearity Error
±3
Differential Linearity Error
–2
+3
No Missing Codes
15
Transition Noise²
1.0
Full-Scale Error^{3, 4}
± 0.5
Full-Scale Error Drift
±7
Full-Scale Error, Ext. REF = 2.5 V
± 0.5
Full-Scale Error Drift, Ext. REF = 2.5 V
Bipolar Zero Error⁴
±2
± 10
Bipolar Zero Error Drift
±2
Power Supply Sensitivity
V_ANA = V_DIG = V_D = 5 V ± 5%
±8
AC ACCURACY
Spurious Free Dynamic Range⁵
Total Harmonic Distortion⁵
Signal to (Noise + Distortion)⁵
–60 dB Input
Signal to Noise⁵
Full-Power Bandwidth⁷
Input Bandwidth
90
–90
83
27
83
1
2.7
–1
16
1.0
±7
±2
±2
96
85
28
85
1
2.7
±2
+1.75
± 0.25
± 0.25
± 10
±8
–96
±3
±2
15
1.0
± 0.5
±7
± 0.5
±2
± 15
±2
±8
90
–90
83
27
83
1
2.7
LSB¹
LSB
Bit
LSB
%
ppm/°C
%
ppm/°C
mV
ppm/°C
LSB
dB⁶
dB
dB
dB
dB
MHz
MHz
SAMPLING DYNAMICS
Aperture Delay
Transient Response
Full-Scale Step
Overvoltage Recovery⁸
40
1
150
40
1
150
40
ns
1
µs
150
ns
REFERENCE
Internal Reference Voltage
2.48 2.5
2.52
2.48 2.5
2.52
2.48 2.5 2.52
V
Internal Reference Source Current
1
1
1
µA
External Reference Voltage Range
for Specified Linearity
2.3 2.5
2.7
2.3 2.5
2.7
2.3 2.5 2.7
V
External Reference Current Drain
Ext. REF = 2.5 V
100
100
100
µA
DIGITAL INPUTS
Logic Levels
V_IL
V_IH
I_IL
I_IH
–0.3
+2.0
+0.8
V_DIG + 0.3
± 10
± 10
–0.3
+2.0
+0.8
V_DIG + 0.3
± 10
± 10
–0.3
+2.0
+0.8
V
V_DIG + 0.3 V
± 10
µA
± 10
µA
NOTES
1_{LSB means least significant bit. With a ± 10 V input, one LSB is 305 µV.}
2_{Typical rms noise at worst case transitions and temperatures.}
3_{Measured with fixed resistors as shown in Figure 5 (AD976) and Figure 6 (AD976A). Adjustable to zero as shown in Figure 7.}
4_{Full-scale error is expressed as the % difference between the actual full-scale code transition voltage and the ideal full-scale transition voltage and includes the effect}
of offset error. The full-scale error is the worst case of either the –full-scale or +full-scale code transition voltage errors.
5_{fIN = 20 kHz (AD976) and fIN = 45 kHz (AD976A), 0.5 dB down, unless otherwise noted.}
6_{All specifications in dB are referred to a full scale ± 10 V input.}
7_{Full-power bandwidth is defined as full-scale input frequency at which signal-to-(noise + distortion) degrades to 60 dB or 10 bits of accuracy.}
8_{Recovers to specified performance after a 2 × FS input overvoltage.}
Specifications subject to change without notice.
–2–
REV. C