MAXIM MAX1191 Technical data
General Description
The MAX1191 is an ultra-low-power, dual, 8-bit,
7.5Msps analog-to-digital converter (ADC). The device
features two fully differential wideband track-and-hold
(T/H) inputs. These inputs have a 440MHz bandwidth
and accept fully differential or single-ended signals.
The MAX1191 delivers a typical signal-to-noise and distortion (SINAD) of 48.6dB at an input frequency of
1.875MHz and a sampling rate of 7.5Msps while consuming only 12mW. This ADC operates from a 2.7V to
3.6V analog power supply. A separate 1.8V to 3.6V
supply powers the digital output driver. In addition to
ultra-low operating power, the MAX1191 features three
power-down modes to conserve power during idle periods. Excellent dynamic performance, ultra-low power,
and small size make the MAX1191 ideal for applications in imaging, instrumentation, and digital communications.
An internal 1.024V precision bandgap reference sets
the full-scale range of the ADC to ±0.512V. A flexible
reference structure allows the MAX1191 to use its internal reference or accept an externally applied reference
for applications requiring increased accuracy.
The MAX1191 features parallel, multiplexed, CMOScompatible tri-state outputs. The digital output format is
offset binary. A separate digital power input accepts a
voltage from 1.8V to 3.6V for flexible interfacing to different logic levels. The MAX1191 is available in a 5mm
× 5mm, 28-pin thin QFN package, and is specified for
the extended industrial (-40°C to +85°C) temperature
range.
For higher sampling frequency applications, refer to the
MAX1195–MAX1198 dual 8-bit ADCs. Pin-compatible
versions of the MAX1191 are also available. Refer to the
MAX1192 data sheet for 22Msps, and the MAX1193
data sheet for 45Msps.
Applications
Ultrasound and Medical Imaging
IQ Baseband Sampling
Battery-Powered Portable Instruments
Low-Power Video
WLAN, Mobile DSL, WLL Receiver
Features
♦ Ultra-Low Power
12mW (Normal Operation: 7.5Msps)
0.3µW (Shutdown Mode)
♦ Excellent Dynamic Performance
48.7dB SNR at f
IN
= 1.875MHz
69dBc SFDR at f
IN
= 1.875MHz
♦ 2.7V to 3.6V Single Analog Supply
♦ 1.8V to 3.6V TTL/CMOS-Compatible Digital
Outputs
♦ Fully Differential or Single-Ended Analog Inputs
♦ Internal/External Reference Option
♦ Multiplexed CMOS-Compatible Tri-State Outputs
♦ 28-Pin Thin QFN Package
♦ Evaluation Kit Available (Order MAX1193EVKIT)
MAX1191
Ultra-Low-Power, 7.5Msps, Dual 8-Bit ADC
________________________________________________________________ Maxim Integrated Products 1
Pin Configuration
Ordering Information
19-2836; Rev 1; 9/03
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
*EP = Exposed paddle.
PART TEMP RANGE PIN-PACKAGE
MAX1191ETI-T -40°C to +85°C
28 Thin QFN-EP*
(5mm x 5mm)
TOP VIEW
DD
V
REFP
REFN
COM
REFIN
PD0
PD1
28
27
26
25
24
23
22
INA-
INA+
GND
CLK
GND
INB+
INB-
1
2
3
4
5
6
7
MAX1191
EXPOSED PADDLE
D0
21
20
D1
19
D2
18
D3
17
A/B
16
D4
D5
15
8
9
10
11
12
13
14
DD
DD
V
V
GND
5mm x 5mm THIN QFN
OGND
DD
D7
OV
D6
MAX1191
Ultra-Low-Power, 7.5Msps, Dual 8-Bit ADC
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VDD= 3.0V, OVDD= 1.8V, V
REFIN
= VDD(internal reference), CL≈ 10pF at digital outputs, f
CLK
= 7.5MHz, C
REFP
= C
REFN
= C
COM
= 0.33µF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
VDD, OVDDto GND ...............................................-0.3V to +3.6V
OGND to GND.......................................................-0.3V to +0.3V
INA+, INA-, INB+, INB- to GND .................-0.3V to (V
DD
+ 0.3V)
CLK, REFIN, REFP, REFN, COM to GND ...-0.3V to (V
DD
+ 0.3V)
PD0, PD1 to OGND .................................-0.3V to (OV
DD
+ 0.3V)
Digital Outputs to OGND.........................-0.3V to (OV
DD
+ 0.3V)
Continuous Power Dissipation (T
A
= +70°C)
28-Pin Thin QFN (dera te d 20.8mW/°C above +70°C) ...1667mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
DC ACCURACY
Resolution 8 Bits
Integral Nonlinearity INL ±0.15 ±1.00 LSB
Differential Nonlinearity DNL No missing codes over temperature ±0.13 ±1.00 LSB
Offset Error
Gain Error Excludes REFP - REFN error ±2 %FS
DC Gain Matching ±0.01 ±0.2 dB
Gain Temperature Coefficient ±30 ppm/°C
Power-Supply Rejection
ANALOG INPUT
Differential Input Voltage Range V
Common-Mode Input Voltage
Range
Input Resistance R
Input Capacitance C
CONVERSION RATE
Maximum Clock Frequency f
Data Latency
DYNAMIC CHARACTERISTICS (differential inputs, 4096 point FFT)
Signal-to-Noise Ratio
(Note 2)
Signal-to-Noise and Distortion
(Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
≥+25°C ±4
<+25°C ±6
Offset (VDD ±5%) ±0.2
DIFF
V
COM
IN
IN
CLK
SNR
SINAD
Gain (V
Differential or single-ended inputs ±0.512 V
Switched capacitor load 720 kΩ
Channel A 5.0
Channel B 5.5
fIN = 1.875MHz 47 48.7
f
IN
fIN = 1.875MHz 47 48.6
f
IN
±5%) ±0.05
DD
= 3.75MHz 48.6
= 3.75 48.5
V
DD
5pF
7.5 MHz
/ 2 V
%FS
LSB
Clock
cycles
dB
dB
MAX1191
Ultra-Low-Power, 7.5Msps, Dual 8-Bit ADC
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(VDD= 3.0V, OVDD= 1.8V, V
REFIN
= VDD(internal reference), CL≈ 10pF at digital outputs, f
CLK
= 7.5MHz, C
REFP
= C
REFN
= C
COM
= 0.33µF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Spurious-Free Dynamic Range
(Note 2)
Thi r d - H ar m oni c D i stor ti on
( N ote 2)
Intermodulation Distortion IMD
Third-Order Intermodulation IM3
Total Harmonic Distortion
(Note 2)
Small-Signal Bandwidth SSBW Input at -20dB FS 440 MHz
Full-Power Bandwidth FPBW Input at -0.5dB FS 440 MHz
Aperture Delay t
Aperture Jitter t
Overdrive Recovery Time 1.5 × full-scale input 2 ns
INTERNAL REFERENCE (REFIN = VDD; V
REFP Output Voltage V
REFN Output Voltage V
COM Output Voltage V
Differential Reference Output V
Differential Reference Output
Temperature Coefficient
Maximum REFP/REFN/COM
Source Current
Maximum REFP/REFN/COM Sink
Current
BUFFERED EXTERNAL REFERENCE (V
REFIN Input Voltage V
COM Output Voltage V
Differential Reference Output V
Maximum REFP/REFN/COM
Source Current
SFDR
HD3
fIN = 1.875MHz 59 69
f
= 3.75MHz 68.7
IN
fIN = 1.875MHz 72.0
= 3.75MHz -70.0
f
IN
f
= 1MHz at -7dB FS, f
IN1
= 1.01MHz
IN2
at -7dB FS
f
= 1MHz at -7dB FS, f
IN1
= 1.01MHz
IN2
at -7dB FS
THD
V
REFTC
I
SOURCE
I
REFIN
I
SOURCE
fIN = 1.875MHz -68.0 -57.0
f
= 3.75MHz -67.0
IN
AD
1dB SNR degradation at Nyquist 2 ps
AJ
, V
REFP
REFP
REFN
COM
REFVREFP
SINK
= 1.024V, V
REFIN
COM
REFVREFP
REFN
- V
- V
- V
- V
, and V
COM
COM
REFN
REFN
are generated internally)
COM
, V
REFN
, and V
REFP
V
/ 2
DD
- 0.15
are generated internally)
COM
V
/ 2
DD
- 0.15
dBc
dBc
-66 dBc
-70 dBc
dBc
1.5 ns
0.256 V
-0.256 V
DD
+ 0.15
V
/ 2
DD
/ 2
V
0.512 V
±30 ppm/°C
2mA
2mA
1.024 V
DD
+ 0.15
V
/ 2
DD
/ 2
V
0.512 V
2mA
RMS
V
V
MAX1191
Ultra-Low-Power, 7.5Msps, Dual 8-Bit ADC
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(VDD= 3.0V, OVDD= 1.8V, V
REFIN
= VDD(internal reference), CL≈ 10pF at digital outputs, f
CLK
= 7.5MHz, C
REFP
= C
REFN
= C
COM
= 0.33µF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Maximum REFP/REFN/COM Sink
Current
REFIN Input Resistance >500 kΩ
REFIN Input Current -0.7 µA
UNBUFFERED EXTERNAL REFERENCE (REFIN = GND, V
REFP Input Voltage V
REFN Input Voltage V
COM Input Voltage V
Differential Reference Input
Voltage
REFP Input Resistance R
REFN Input Resistance R
DIGITAL INPUTS (CLK, PD0, PD1)
Input High Threshold V
Input Low Threshold V
Input Hysteresis V
Digital Input Leakage Current DI
Digital Input Capacitance DC
DIGITAL OUTPUTS (D7–D0, A/B)
Output Voltage Low V
Output Voltage High V
Tri-State Leakage Current I
Tri-State Output Capacitance C
POWER REQUIREMENTS
Analog Supply Voltage V
Digital Output Supply Voltage OV
I
SINK
, V
REFN
, and V
COM
V
REFVREFP
Measured between REFP and COM 4 kΩ
REFP
Measured between REFN and COM 4 kΩ
REFN
REFP
REFN
- V
- V
- V
REFP
COM
COM
REFN
CLK
IH
PD0, PD1
CLK
IL
PD0, PD1
HYST
CLK at GND or V
IN
PD0 and PD1 at OGND or OV
IN
OLISINK
OHISOURCE
LEAK
OUT
DD
DD
= 200µA
= 200µA
DD
DD
are applied
COM
2mA
0.256 V
-0.256 V
V
/ 2 V
DD
0.512 V
0.7 x
V
DD
0.7 x
OV
DD
0.3 x
V
DD
0.3 x
OV
0.1 V
±5
±5
5pF
0.2 x
OV
0.8 x
OV
DD
±5 µA
5pF
2.7 3.0 3.6 V
1.8 V
DD
DD
DD
V
V
µA
V
V
V
MAX1191
Ultra-Low-Power, 7.5Msps, Dual 8-Bit ADC
_______________________________________________________________________________________ 5
,
ELECTRICAL CHARACTERISTICS (continued)
(VDD= 3.0V, OVDD= 1.8V, V
REFIN
= VDD(internal reference), CL≈ 10pF at digital outputs, f
CLK
= 7.5MHz, C
REFP
= C
REFN
= C
COM
= 0.33µF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Analog Supply Current I
Digital Output Supply Current
(Note 3)
TIMING CHARACTERISTICS
CLK Rise to CHA Output Data
Valid
CLK Fall to CHB Output Data
Valid
CLK Rise/Fall to A/B Rise/Fall
Time
PD1 Rise to Output Enable t
PD1 Fall to Output Disable t
CLK Duty Cycle 50 %
CLK Duty-Cycle Variation ±10 %
Wake-Up Time from Shutdown
Mode
Wake-Up Time from Standby
Mode
Digital Output Rise/Fall Time 20% to 80% 2 ns
INTERCHANNEL CHARACTERISTICS
Crosstalk Rejection
Amplitude Matching fIN = 1.875MHz at -0.5dB FS (Note 7) ±0.03 dB
Phase Matching fIN = 1.875MHz at -0.5dB FS (Note 7) ±0.03 Degrees
Normal operating mode, fIN = 1.875MHz
at -0.5dB FS, CLK input from GND to V
Idle mode (tri-state), fIN = 1.875MHz at -
0.5dB FS, CLK input from GND to V
DD
Standby mode, CLK input from GND to
V
DD
Shutdown mode, CLK = GND or VDD,
PD0 = PD1 = OGND
Normal operating mode,
f
= 1.875MHz at -0.5dB FS, CL ≈ 10pF
IN
Idle mode (tri-state), DC input, CLK =
I
ODD
GND or V
Standby mode, DC input, CLK = GND or
V
DD,
PD0 = OVDD, PD1 = OGND
DD
PD0 = OGND, PD1 = OV
DD
Shutdown mode, CLK = GND or VDD,
PD0 = PD1 = OGND
t
t
t
DA/B
t
WAKE, SD
t
WAKE, ST
50% of C LK to 50% of d ata, Fi g ur e 5
DOA
( N ote 4)
50% of C LK to 50% of d ata, Fi g ur e 5
DOB
( N ote 4)
50% of C LK to 50% of A/B, Fi g ur e 5
( N ote 4)
PD0 = OV
EN
DIS
PD0 = OV
DD
DD
(Note 5) 20 µs
(Note 5) 5.5 µs
f
= 1.875MHz at -0.5dB FS,
IN,X
f
= 0.3MHz at -0.5dB FS (Note 6)
IN,Y
DD
DD
4.0 5.0
4.0
2.2
0.1 5.0 µA
1.0 mA
0.1 5.0
0.1
0.1 5.0
1 6 8.5 ns
1 6 8.5 ns
1 6 8.5 ns
5ns
5ns
-75 dB
mA
µA
MAX1191
Ultra-Low-Power, 7.5Msps, Dual 8-Bit ADC
6 _______________________________________________________________________________________
Typical Operating Characteristics
(VDD= 3.0V, OVDD= 1.8V, V
REFIN
= VDD(internal reference), CL≈ 10pF at digital outputs, differential input at -0.5dB FS, f
CLK
=
7.500567MHz at 50% duty cycle, T
A
= +25°C, unless otherwise noted.)
ELECTRICAL CHARACTERISTICS (continued)
(VDD= 3.0V, OVDD= 1.8V, V
REFIN
= VDD(internal reference), CL≈ 10pF at digital outputs, f
CLK
= 7.5MHz, C
REFP
= C
REFN
= C
COM
= 0.33µF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)
Note 1: Specifications ≥+25°C guaranteed by production test, <+25°C guaranteed by design and characterization.
Note 2: SNR, SINAD, SFDR, HD3, and THD are based on a differential analog input voltage of -0.5dB FS referenced to the
amplitude of the digital output. SNR and THD are calculated using HD2 through HD6.
Note 3: The power consumption of the output driver is proportional to the load capacitance (CL).
Note 4: Guaranteed by design and characterization. Not production tested.
Note 5: SINAD settles to within 0.5dB of its typical value.
Note 6: Crosstalk rejection is measured by applying a high-frequency test tone to one channel and a low-frequency tone to the
second channel. FFTs are performed on each channel. The parameter is specified as power ratio of the first and second
channel FFT test tone bins.
Note 7: Amplitude/phase matching is measured by applying the same signal to each channel, and comparing the magnitude and
phase of the fundamental bin on the calculated FFT.
FFT PLOT CHANNEL A (DIFFERENTIAL INPUTS,
8192-POINT DATA RECORD)
0
-10
-20
-30
-40
-50
AMPLITUDE (dB)
-60
-70
-80
-90
04.0
ANALOG INPUT FREQUENCY (MHz)
HD2
f
= 7.500567MHz
CLK
= 1.000747MHz
f
INA
= 3.020553MHz
f
INB
= A
A
INA
INB
HD3
= -0.5dB FS
f
INB
3.53.02.0 2.51.0 1.50.5
MAX1191 toc01
FFT PLOT CHANNEL B (DIFFERENTIAL INPUTS,
8192-POINT DATA RECORD)
0
f
= 7.500567MHz
CLK
-10
= 1.000747MHz
f
INA
= 3.020553MHz
f
INB
-20
= A
= -0.5dB FS
A
INA
-30
-40
-50
AMPLITUDE (dB)
-60
-70
-80
-90
INB
HD3
HD2
f
INA
04.0
ANALOG INPUT FREQUENCY (MHz)
MAX1191 toc02
3.53.02.0 2.51.0 1.50.5
FFT PLOT CHANNEL A (DIFFERENTIAL INPUTS,
8192-POINT DATA RECORD)
0
f
= 7.500567MHz
CLK
-10
= 3.020553MHz
f
INA
= 1.000747MHz
f
INB
-20
= A
A
INA
-30
-40
-50
AMPLITUDE (dB)
-60
-70
-80
-90
INB
f
INB
04.0
ANALOG INPUT FREQUENCY (MHz)
= -0.5dB FS
HD2
HD3
3.53.02.0 2.51.0 1.50.5
MAX1191 toc03
FFT PLOT CHANNEL B (DIFFERENTIAL INPUTS,
8192-POINT DATA RECORD)
0
-10
-20
-30
-40
-50
AMPLITUDE (dB)
-60
-70
-80
-90
04.0
ANALOG INPUT FREQUENCY (MHz)
HD2
f
f
f
A
= 7.500567MHz
CLK
= 3.020553MHz
INA
= 1.000747MHz
INB
= A
INA
INB
HD3
= -0.5dB FS
f
INA
3.53.02.0 2.51.0 1.50.5
MAX1191 toc04
TWO-TONE IMD PLOT (DIFFERENTIAL INPUTS,
8192-POINT DATA RECORD)
0
f
= 7.500567MHz
CLK
-10
= 1.8MHz
f
IN1
= 2.3MHz
f
IN2
-20
= -7dB FS
A
IN
-30
-40
-50
AMPLITUDE (dB)
-60
-70
-80
-90
04.0
f
IN1
ANALOG INPUT FREQUENCY (MHz)
f
IN2
MAX1191 toc05
3.53.02.0 2.51.0 1.50.5
MAX1191
Ultra-Low-Power, 7.5Msps, Dual 8-Bit ADC
_______________________________________________________________________________________ 7
Typical Operating Characteristics (continued)
(VDD= 3.0V, OVDD= 1.8V, V
REFIN
= VDD(internal reference), CL≈ 10pF at digital outputs, differential input at -0.5dB FS, f
CLK
=
7.500567MHz at 50% duty cycle, T
A
= +25°C, unless otherwise noted.)
FFT PLOT CHANNEL A (SINGLE-ENDED INPUTS,
8192-POINT DATA RECORD)
0
-10
-20
-30
-40
-50
AMPLITUDE (dB)
-60
-70
-80
-90
04.0
ANALOG INPUT FREQUENCY (MHz)
FFT PLOT CHANNEL A (SINGLE-ENDED INPUTS,
8192-POINT DATA RECORD)
0
f
= 7.500567MHz
CLK
-10
= 3.020553MHz
f
INA
= 1.000747MHz
f
INB
-20
= A
= -0.5dB FS
A
INA
-30
-40
-50
AMPLITUDE (dB)
-60
-70
-80
-90
INB
f
INB
HD2
04.0
ANALOG INPUT FREQUENCY (MHz)
HD2
HD3
f
= 7.500567MHz
CLK
= 1.000747MHz
f
INA
= 3.020553MHz
f
INB
= A
A
INA
INB
HD3
= -0.5dB FS
f
INB
3.53.02.0 2.51.0 1.50.5
3.53.02.0 2.51.0 1.50.5
MAX1191 toc06
MAX1191 toc08
FFT PLOT CHANNEL B (SINGLE-ENDED INPUTS,
8192-POINT DATA RECORD)
0
f
= 7.500567MHz
CLK
-10
= 1.000747MHz
f
INA
= 3.020553MHz
f
INB
-20
= A
= -0.5dB FS
A
INA
-30
-40
-50
AMPLITUDE (dB)
-60
-70
-80
-90
INB
HD2
f
INA
04.0
ANALOG INPUT FREQUENCY (MHz)
HD3
MAX1191 toc07
3.53.02.0 2.51.0 1.50.5
FFT PLOT CHANNEL B (SINGLE-ENDED INPUTS,
8192-POINT DATA RECORD)
0
-10
-20
-30
-40
-50
AMPLITUDE (dB)
-60
-70
-80
-90
04.0
ANALOG INPUT FREQUENCY (MHz)
HD2
f
f
f
A
= 7.500567MHz
CLK
= 3.020553MHz
INA
= 1.000747MHz
INB
= A
INA
INB
HD3
= -0.5dB FS
f
INA
3.53.02.0 2.51.0 1.50.5
MAX1191 toc09
TWO-TONE IMD PLOT (SINGLE-ENDED INPUTS,
8192-POINT DATA RECORD)
0
f
= 7.500567MHz
CLK
-10
= 1.8MHz
f
IN1
= 2.3MHz
f
IN2
-20
= -7dB FS
A
IN
-30
-40
-50
AMPLITUDE (dB)
-60
-70
-80
-90
04.0
f
IN1
ANALOG INPUT FREQUENCY (MHz)
f
IN2
MAX1191 toc10
3.53.02.0 2.51.0 1.50.5
MAX1191
Ultra-Low-Power, 7.5Msps, Dual 8-Bit ADC
8 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(VDD= 3.0V, OVDD= 1.8V, V
REFIN
= VDD(internal reference), CL≈ 10pF at digital outputs, differential input at -0.5dB FS, f
CLK
=
7.500567MHz at 50% duty cycle, T
A
= +25°C, unless otherwise noted.)
50
49
48
47
46
SNR (dB)
45
44
43
42
0100
-45
-50
-55
-60
-65
THD (dB)
-70
-75
-80
-85
0 100
SIGNAL-TO-NOISE RATIO
vs. ANALOG INPUT FREQUENCY
CHANNEL A
CHANNEL B
10
ANALOG INPUT FREQUENCY (MHz)
TOTAL HARMONIC DISTORTION
vs. ANALOG INPUT FREQUENCY
CHANNEL A
CHANNEL B
10
ANALOG INPUT FREQUENCY (MHz)
MAX1191 toc11
MAX1191 toc13
SIGNAL-TO-NOISE AND DISTORTION
vs. ANALOG INPUT FREQUENCY
50
49
48
47
46
SNR (dB)
45
44
43
42
0 100
CHANNEL A
CHANNEL B
10
ANALOG INPUT FREQUENCY (MHz)
SPURIOUS-FREE DYNAMIC RANGE
vs. ANALOG INPUT FREQUENCY
85
80
75
70
65
SFDR (dB)
60
55
50
45
0 100
CHANNEL A
CHANNEL B
10
ANALOG INPUT FREQUENCY (MHz)
MAX1191 toc12
MAX1191 toc14
MAX1191
Ultra-Low-Power, 7.5Msps, Dual 8-Bit ADC
_______________________________________________________________________________________ 9
Typical Operating Characteristics (continued)
(VDD= 3.0V, OVDD= 1.8V, V
REFIN
= VDD(internal reference), CL≈ 10pF at digital outputs, differential input at -0.5dB FS, f
CLK
=
7.500567MHz at 50% duty cycle, T
A
= +25°C, unless otherwise noted.)
SIGNAL-TO-NOISE RATIO
vs. ANALOG INPUT POWER
60
fIN = 2.017059MHz
50
40
30
SNR (dB)
20
10
0
-30 0
ANALOG INPUT POWER (dB FS)
TOTAL HARMONIC DISTORTION
vs. ANALOG INPUT POWER
-30
-40
SIGNAL-TO-NOISE AND DISTORTION
vs. ANALOG INPUT POWER
fIN = 2.017059MHz
0
-30 0
ANALOG INPUT POWER (dB FS)
-10-20
SPURIOUS-FREE DYNAMIC RANGE
vs. ANALOG INPUT POWER
fIN = 2.017059MHz
MAX1191 toc18
-10
-5-15-25 -20
fIN = 2.017059MHz
MAX1191 toc15
MAX1191 toc17
60
50
40
30
SINAD (dB)
20
10
80
70
MAX1191 toc16
60
-50
THD (dBc)
-60
-70
-30 0
ANALOG INPUT POWER (dB FS)
-10
-5-15-25 -20
SFDR (dBc)
50
40
30
-30 0
ANALOG INPUT POWER (dB FS)
-10
-5-15-25 -20
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